The stable cycling of a high-capacity Bi anode enabled by an in situ-generated Li3PO4 transition layer in a sulfide-based all-solid-state battery.
Abstract The most processable solid electrolyte, Li2S-P2S5 (LPS), exhibits the drawback of a limited potential window, which leads to the deterioration of the interface stability and limits the application of high-capacity anodes, such as those based on Li, Si, and Bi. Here, the in situ formation of a designed artificial solid electrolyte interface provides an effective way to apply low-voltage anodes in solid-state batteries. PMID: 33241235 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 26, 2020 Category: Chemistry Authors: Li Q, Cao Y, Yin G, Gao Y Tags: Chem Commun (Camb) Source Type: research

Harnessing hypervalent iodonium ylides as carbene precursors: C-H activation of N-methoxybenzamides with a Rh(III)-catalyst.
Abstract Hypervalent iodonium ylides expeditiously generate carbenes which undergo domino intermolecular C-H activation followed by intramolecular condensation in the presence of N-methoxybenzamide as a starting material and a Rh(iii)-catalyst to afford dihydrophenanthridines. KIE studies and DFT calculations were performed to substantiate the mechanistic pathway. To extend the synthetic utilisation, fluorescent pyranoisocoumarins were achieved by using Rh(iii)-catalyzed peri-C-H/O-H activation/annulation reactions. PMID: 33241807 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 26, 2020 Category: Chemistry Authors: Mayakrishnan S, Tamizmani M, Maheswari NU Tags: Chem Commun (Camb) Source Type: research

Probing self-regeneration of essential protein factors required for in vitro translation activity by serial transfer.
Abstract The bottom-up construction of bio-inspired systems capable of self-maintenance and reproduction is a central goal in systems chemistry and synthetic biology. A particular challenge in such systems is the continuous regeneration of key proteins required for macromolecular synthesis. Here, we probe self-maintenance of a reconstituted in vitro translation system challenged by serial transfer of selected key proteins. We find that the system can simultaneously regenerate multiple essential polypeptides, which then contribute to the maintenance of protein expression after serial transfer. The presented strateg...
Source: Chemical Communications - November 26, 2020 Category: Chemistry Authors: Libicher K, Mutschler H Tags: Chem Commun (Camb) Source Type: research

Tunable iridium catalyst designs with bidentate N-heterocyclic carbene ligands for SABRE hyperpolarization of sterically hindered substrates.
Abstract A series of bidentate N-heterocyclic carbene (NHC) iridium catalysts, [Ir(κC,N-NHC)H2L2]BPh4, are proposed for SABRE hyperpolarization. The steric and electronic properties of the NHCs are used to tune substrate affinity and thereby SABRE efficiency. The sterically hindered substrates 2,4-diaminopyrimidine and trimethoprim yielded maximum proton NMR signal enhancements of ∼300-fold and ∼150-fold, respectively. PMID: 33241813 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 26, 2020 Category: Chemistry Authors: Pham P, Hilty C Tags: Chem Commun (Camb) Source Type: research

N-Heterocyclic carbene (NHC) organocatalysis using aliphatic aldehydes.
Abstract Catalysis using N-heterocyclic carbenes (NHCs) has been widely employed for the umpolung of aldehydes, and these reactions proceed via the generation of nucleophilic Breslow intermediates. These acyl anion equivalents can be added to aldehydes, ketones, imines, Michael acceptors, and even unactivated carbon-carbon multiple bonds. In a majority of the cases, aromatic aldehydes are used in NHC catalysis. However, the use of aliphatic aldehydes is relatively less explored because of the low electrophilicity of the aliphatic aldehydes compared to aromatic aldehydes for the nucleophilic addition of carbenes, a...
Source: Chemical Communications - November 26, 2020 Category: Chemistry Authors: Barik S, Biju AT Tags: Chem Commun (Camb) Source Type: research

Synthesis of functionalized cyclopropylboronic esters based on a 1,2-metallate rearrangement of cyclopropenylboronate.
Abstract A procedure converting tribromocyclopropane to densely functionalized β-selenocyclopropylboronic ester using the 1,2-metallate rearrangement of a boron ate-complex has been developed. Treatment of an in situ-generated cyclopropenylboronic ester ate-complex with phenylselenenyl chloride triggered stereospecific rearrangement to produce functionalized cyclopropanes. DFT calculations for 1,2-metallate rearrangement suggested that the reaction proceeds through a seleniranium intermediate. PMID: 33241828 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 26, 2020 Category: Chemistry Authors: Mizoguchi H, Seriu M, Sakakura A Tags: Chem Commun (Camb) Source Type: research

2-Azidoacrylamides as compact platforms for efficient modular synthesis.
Abstract Efficient methods to assemble modules with compact platform molecules by triazole formations and Michael reactions are disclosed. The good electrophilicity of 2-triazolylacrylamides realized Michael additions using various nucleophiles. An iterative synthesis of a tetrakis(triazole) was accomplished by orthogonal triazole formations and Michael reactions. PMID: 33241832 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 26, 2020 Category: Chemistry Authors: Takemura H, Goto S, Hosoya T, Yoshida S Tags: Chem Commun (Camb) Source Type: research

A functionalized metal organic framework-laden nanoporous polymer electrolyte for exceptionally stable lithium electrodeposition.
Abstract A nanoporous all-solid-state MOF-laden polymer electrolyte that is simply mediated by an electronic effect shows remarkably high lithium electrodeposition stability of hundreds of charge-discharge cycles and over 1500 operating hours, while maintaining a very small voltage polarization. This result is a significant improvement relative to conventional PEO and, when used in an all-solid-state battery (ASSB), this electrolyte enabled enhanced cycle life. This new all-solid-state electrolyte shows a promising rational design for the emerging microporous polymeric materials as novel SPEs in ASSBs. PMID: ...
Source: Chemical Communications - November 26, 2020 Category: Chemistry Authors: Qing X, Li J, Wang Z, Chen M, Lin J, Lin X Tags: Chem Commun (Camb) Source Type: research

pH-Dependent peptide bond formation by the selective coupling of α-amino acids in water.
pH-Dependent peptide bond formation by the selective coupling of α-amino acids in water. Chem Commun (Camb). 2020 Nov 26;: Authors: Wu LF, Liu Z, Sutherland JD Abstract A novel mechanism enabling selective peptide elongation by coupling α-amino acids over other potentially competing prebiotic amines under acidic aqueous condition is suggested. It proceeds via the generation of a carboxylic acid anhydride intermediate with subsequent intramolecular formation of the amide bond. PMID: 33242043 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 26, 2020 Category: Chemistry Authors: Wu LF, Liu Z, Sutherland JD Tags: Chem Commun (Camb) Source Type: research

Highly active hollow mesoporous NiFeCr hydroxide as an electrode material for the oxygen evolution reaction and a redox capacitor.
Abstract A hollow mesoporous trimetallic NiFeCr hydroxide electrode is prepared via a four-step procedure involving the fast electrodeposition of an Ni/Cr/Fe alloy onto a nickel foam substrate, followed by dealloying, oxidation, and activation. The title electrode shows an ultralow onset overpotential of 210 mV for the oxygen evolution reaction and a high specific capacity of 1768 F g-1 as a redox capacitor. PMID: 33242046 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 26, 2020 Category: Chemistry Authors: Zhang D, Yang Z, Yang Y, Li H, Wang X Tags: Chem Commun (Camb) Source Type: research

Strictly sparse surface modification and its application for endowing nanoparticles with an exact "valency".
Strictly sparse surface modification and its application for endowing nanoparticles with an exact "valency". Chem Commun (Camb). 2020 Nov 26;: Authors: Yang R, Dou J, Jiang L, Chen D Abstract Sparsely modified surfaces can be used as a general platform for precisely modifying small nanoparticles. However, strictly, rather than statistically, sparse surface modification remains a big challenge. Herein, we report a new and general method for strictly sparse modification of the surface of relatively large nanoparticles. The method is analogous to planting big trees and then removing the big cro...
Source: Chemical Communications - November 26, 2020 Category: Chemistry Authors: Yang R, Dou J, Jiang L, Chen D Tags: Chem Commun (Camb) Source Type: research

Protein-recruiting synthetic molecules targeting the Golgi surface.
Abstract Organelle-localizable small-molecule ligands are valuable tools for spatiotemporally controlling protein localization and signaling processes in living cells. Here, we present synthetic ligands that specifically localize to the Golgi surface. The ligands can rapidly recruit their target proteins from the cytoplasm to the Golgi and be applied to manipulate signaling proteins and lipids on the Golgi membrane, offering a new useful chemical tool for the study and control of Golgi/cell functions. PMID: 33236732 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 25, 2020 Category: Chemistry Authors: Sawada S, Nakamura A, Yoshii T, Kuwata K, Nakatsu F, Tsukiji S Tags: Chem Commun (Camb) Source Type: research

Time-resolved observation of V2O5/TiO2 in NH3-SCR reveals the equivalence of Br ønsted and Lewis acid sites.
Time-resolved observation of V2O5/TiO2 in NH3-SCR reveals the equivalence of Brønsted and Lewis acid sites. Chem Commun (Camb). 2020 Nov 25;: Authors: Song I, Lee H, Jeon SW, Kim T, Kim DH Abstract The involvement of Lewis and Brønsted acid sites on V2O5/TiO2 catalyst in the selective catalytic reduction of NO with NH3 (NH3-SCR) is under debate. Here, a Li doping strategy is applied to selectively block Brønsted sites, which aims to prepare model catalysts with the same V loading but different ratios of the two acid sites. Time-resolved in situ DRIFTS observation demonstrates that...
Source: Chemical Communications - November 25, 2020 Category: Chemistry Authors: Song I, Lee H, Jeon SW, Kim T, Kim DH Tags: Chem Commun (Camb) Source Type: research

Promoting the electrocatalytic properties of nickel aerogel by gold decoration for efficient electrocatalytic oxygen evolution in alkali.
Abstract Decorating Au onto Ni aerogel via a one-step spontaneous gelation preserved the highly porous structure of Ni aerogel, and contributed to more active sites and enhanced intrinsic activity for water oxidation with low overpotential of 377 mV for the current density of 100 mA cm-2. PMID: 33236736 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 25, 2020 Category: Chemistry Authors: Gao W, Lei M, Li L, Wen D Tags: Chem Commun (Camb) Source Type: research

Identifying isomers of peroxy radicals in the gas phase: 1-C3H7O2vs. 2-C3H7O2.
This study paves the way to probing elusive peroxy radicals and their isomers in advanced mass spectrometry analysis of combustion and atmospheric reactions. PMID: 33236739 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 25, 2020 Category: Chemistry Authors: Tang X, Lin X, Garcia GA, Loison JC, Gouid Z, Abdallah HH, Fittschen C, Hochlaf M, Gu X, Zhang W, Nahon L Tags: Chem Commun (Camb) Source Type: research

A transient lanthanum phosphinidene complex.
Abstract Deprotonation of the terminal phosphido complex (PN)2La(PHMes) (1) results in the C-H-activation of one of the PN ligands, formally retaining the PHMes group. The reaction mechanism and the possible involvement of the transient phosphinidene complex 2 are investigated by theoretical and chemical means including a deuteration experiment employing (PN)2La(PDMes) (1-d). Furthermore, the thermal stability of product [K(2.2.2-cryptand)][(PN)(PNcyclo)La(PHMes)] (3b) is examined, giving the diphosphido complex [K(2.2.2-cryptand)][(PN)2La(P2Mes2)] (6). PMID: 33236740 [PubMed - as supplied by publisher] (Sour...
Source: Chemical Communications - November 25, 2020 Category: Chemistry Authors: Watt FA, McCabe KN, Schoch R, Maron L, Hohloch S Tags: Chem Commun (Camb) Source Type: research

Deep learning model predicts water interaction sites on the surface of proteins using limited-resolution data.
Abstract We develop a residual deep learning model, hotWater (https://pypi.org/project/hotWater/), to identify key water interaction sites on proteins for binding models and drug discovery. This is tested on new crystal structures, as well as cryo-EM and NMR structures from the PDB and in crystallographic refinement with promising results. PMID: 33237041 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 25, 2020 Category: Chemistry Authors: Zaucha J, Softley CA, Sattler M, Frishman D, Popowicz GM Tags: Chem Commun (Camb) Source Type: research

Experimental and theoretical studies on circularly polarized phosphorescence of a [2.2]paracyclophane-based platinum(II) complex.
We report, for the first time, theoretical estimation of the CPP |glum| value using relativistic calculations. PMID: 33231220 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 24, 2020 Category: Chemistry Authors: Inoue R, Kondo R, Morisaki Y Tags: Chem Commun (Camb) Source Type: research

A cyclodextrin surfactant for stable emulsions with an accessible cavity for host-guest complexation.
BJ Abstract Although cyclodextrins (CDs) have been used as additives to small molecule surfactants, there are only a few examples of this cyclic oligosaccharide being used as a surfactant template. Herein, we present a novel ionic β-CD derivative that shows significant surface activity and stabilizes oil-in-water emulsions prepared with hexadecane as a model oil. The macrocyclic surfactant strongly reduces the oil-water surface tension with increasing concentration and shows a critical micelle concentration (CMC) around 5 mM. We demonstrate the stability of the oil-in-water emulsions and verify the possibili...
Source: Chemical Communications - November 24, 2020 Category: Chemistry Authors: Schlüter F, Bela MM, Glikman D, Braunschweig B, Ravoo BJ Tags: Chem Commun (Camb) Source Type: research

The range of antiferromagnetic coupling governs the conductivity: semiconducting behavior and ammonia gas sensing property of diamagnetic hexaradical-containing tetranuclear CoIII4 cluster and its nonradical congener.
Abstract Long-range antiferromagnetic coupling impeded electron flow through the hexaradical-containing tetranuclear CoIII4 complex (1), while the nonradical-containing tetranuclear CoIII4 complex (2), with no paramagnetic centres, was a semiconductor and sensed NH3 efficiently at room temperature (25 °C). PMID: 33231224 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 24, 2020 Category: Chemistry Authors: Sarkar P, Konch TJ, Kamilya T, Raidongia K, Acharya S, Mukherjee C Tags: Chem Commun (Camb) Source Type: research

Chirality reversal, enhancement and transfer by pH-adjusted surfactant assembly.
Abstract The controllable chirality reversal and enhancement at a supramolecular level is crucial for the synthesis and applications of circularly active materials, which has been achieved by a pH-adjusted amphiphilic chiral surfactant assembly approach, and reveals the relationship between the chirality behavior and its assembly morphology in a non-covalent interaction regime and its ability to transfer chirality from chiral molecules to achiral ones under appropriate conditions. PMID: 33231225 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 24, 2020 Category: Chemistry Authors: Zhou Z, Zhou J, Chen L, Zhao Q, Zhang C, Ge G Tags: Chem Commun (Camb) Source Type: research

Nanoenzymes in disease diagnosis and therapy.
Abstract Nanoenzymes, as a new generation of artificial enzymes with highly effective enzyme-like properties, have come into focus and have achieved great progress. Considering the enormous potential of nanoenzymes in the field of disease diagnosis and treatment, such as biological detection, anti-inflammatory, anti-oxidative damage and cancer treatments, etc., we firstly summarize the wide range of bio-applications of different nanoenzymes in these fields. In this review, we discuss the factors influencing the properties of nanoenzymes such as pH and temperature, surface modification and doping of other elements....
Source: Chemical Communications - November 24, 2020 Category: Chemistry Authors: Yu Z, Lou R, Pan W, Li N, Tang B Tags: Chem Commun (Camb) Source Type: research

Simultaneous detection and speciation of mono- and di-valent copper ions with a dual-channel fluorescent nanoprobe.
We report herein a dual channel fluorescent nanoprobe for the detection of mono- and di-valent copper ions. The probe, BSA-CDs@RBH/BCS, is designed by decorating carbon dots (CDs) on BSA encapsulated rhodamine hydrazide (RBH) and conjugating with bathocuproine disulfonate (BCS). Cu2+ catalyzes the hydrolysis of RBH, and the formed rhodamine B (RhB) shows emission at λex/λem = 360/575 nm which ensures Cu2+ detection. BSA reduces Cu2+ to Cu+ and the BCS-Cu+ chelate shows emission at λex/λem 360/450 nm which ensures Cu+ assay. Thus, the dual-channel fluorescence enables speciation of Cu2+ and Cu+. ...
Source: Chemical Communications - November 24, 2020 Category: Chemistry Authors: Zheng AQ, Zhao CX, Wang XJ, Shu Y, Wang JH Tags: Chem Commun (Camb) Source Type: research

Dual-site catalysis for sustainable polymers to replace current commodity polymers - carbonylative copolymerization of ethylene, ethylene oxide, and tetrahydrofuran.
Abstract Zwitterionic Ni(ii)-catalyzed carbonylative copolymerization of ethylene and cyclic ethers for the synthesis of photolytically and hydrolytically degradable polymers is reported. The segmented tetrapolymer products are composed of polyketone segments from alternating enchainments of CO and ethylene and poly(ether-co-ester) segments from non-alternating enchainments of CO, ethylene oxide, and tetrahydrofuran. Plastic and elastic products can be obtained via the general synthetic platform with the appropriate choice of catalyst and polymerization conditions. PMID: 33231249 [PubMed - as supplied by publ...
Source: Chemical Communications - November 24, 2020 Category: Chemistry Authors: Dai Y, Luo J, Liu T, Jia L Tags: Chem Commun (Camb) Source Type: research

Transformation between 2D covalent organic frameworks with distinct pore hierarchy via exchange of building blocks with different symmetries.
Abstract Transformation between 2D covalent organic frameworks (COFs) via exchange of molecular building blocks with different symmetries has been realized, which gives rise to the conversion between 2D COFs with distinct pore hierarchy. This type of monomer replacement has expanded the scope of the building-unit-exchange-based COF-to-COF transformation strategy. PMID: 33231586 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 24, 2020 Category: Chemistry Authors: Ma DL, Qi QY, Lu J, Xiang MH, Jia C, Lu BY, Jiang GF, Zhao X Tags: Chem Commun (Camb) Source Type: research

Nickel-catalysed chemoselective C-3 alkylation of indoles with alcohols through a borrowing hydrogen method.
Abstract An inexpensive, air-stable, isolable nickel catalyst is reported that can perform chemoselective C3-alkylation of indoles with a variety of alcohols following "borrowing hydrogen". A one-pot, cascade C3-alkylation starting from 2-aminophenyl ethyl alcohols, and thus obviating the need for pre-synthesized indoles, further adds to the broad scope of this method. The reaction is radical-mediated, and is significantly different from other examples, often dictated by metal-ligand bifunctionality. PMID: 33231589 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 24, 2020 Category: Chemistry Authors: Bains AK, Biswas A, Adhikari D Tags: Chem Commun (Camb) Source Type: research

Emission color-tunable oxazol(in)yl-substituted excited-state intramolecular proton transfer (ESIPT)-based luminophores.
BJ Abstract Oxazolinyl- and arylchalcogenazolyl-substituted hydroxyfluorenes exhibiting excited-state intramolecular proton transfer (ESIPT) are described as potent and highly modular luminophores. Emission color tuning was achieved by varying the π-expansion and the insertion of different chalcogen atoms. PMID: 33231590 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 24, 2020 Category: Chemistry Authors: Göbel D, Rusch P, Duvinage D, Bigall NC, Nachtsheim BJ Tags: Chem Commun (Camb) Source Type: research

Electronically interacted Co3O4/WS2 as superior oxygen electrode for rechargeable zinc-air batteries.
Abstract The electronically interacted Co3O4/WS2 with a maximum power density of 174 mW cm-2, 2.3 fold better than Pt/C-IrO2, shows its superiority as an oxygen electrode for rechargeable zinc-air batteries. PMID: 33225341 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 23, 2020 Category: Chemistry Authors: Ling Y, Li M, Qu K, Yang Z Tags: Chem Commun (Camb) Source Type: research

Visible-light-induced radical isocyanide insertion protocol for the synthesis of difluoromethylated spiro[indole-3,3'-quinoline] derivatives.
Abstract Herein, we report the first protocol for visible-light-induced radical isocyanide insertion reactions between 3-(2-isocyanobenzyl)-indoles and bromodifluoroacetates or bromodifluoroacetamides. The protocol, which has good functional group tolerance and a broad substrate scope, constitutes an efficient and general route to difluoromethylated spiro[indole-3,3'-quinoline] derivatives. PMID: 33227101 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 23, 2020 Category: Chemistry Authors: Zhang J, Xu W, Qu Y, Liu Y, Li Y, Song H, Wang Q Tags: Chem Commun (Camb) Source Type: research

A solid-state route to stabilize cubic Li7La3Zr2O12 at low temperature for all-solid-state-battery applications.
Abstract The integration of a solid electrolyte with electrodes without interfacial degradation is an integral part of enabling high-performance all-solid-state batteries. Here we highlight that additive-assisted solid-state reactions using high-energy ball-milling and multistep heating can be an effective approach to lower the processing temperatures of cubic Li7La3Zr2O12 garnet. The obtained total Li conductivity is 1.4 × 10-4 S cm-1, comparable with that obtained using high-temperature processing. We found that liquid-phase sintering triggered by a lithium borate additive increases the microstrain of Li7L...
Source: Chemical Communications - November 23, 2020 Category: Chemistry Authors: Han J, Kim JC Tags: Chem Commun (Camb) Source Type: research

Oxidative addition of Bi-C bonds to Pt(0): reaction of Pt(PEt3)3 with cyclic organobismuth compounds.
Abstract The reaction of cyclic organobismuth compounds, 12-phenyl- and 12-chloro-5,6,7,12-tetrahydrodibenz[c,f][1,5]azabismocines, with Pt(PEt3)3 was examined. Oxidative addition of the exocyclic Bi-C bond to Pt(0) selectively took place in the reaction of the 12-phenyl derivative. Oxidative addition of the exocyclic Bi-Cl bond reversibly took place and was kinetically preferred, while endocyclic Bi-C bond oxidative addition products were thermodynamically favored and became the final products in the reaction of 12-chloro derivatives. These results demonstrate the oxidative addition of a Bi-C bond to a transition...
Source: Chemical Communications - November 23, 2020 Category: Chemistry Authors: Shimada S, Wang XB, Tanaka M Tags: Chem Commun (Camb) Source Type: research

RbB3O4F2: a rubidium fluorooxoborate with an unprecedented [B3O5F2]3- functionalized unit and a large birefringence.
Abstract A new rubidium fluorooxoborate, RbB3O4F2, was structurally designed and synthesized by using the strategy of fluorine-introduction into borates. Interestingly, RbB3O4F2 presents the novel [B3O4F2]- chains formed by the unprecedented [B3O5F2]3- fundamental building block. More importantly, RbB3O4F2 has a large birefringence and a deep-UV cutoff edge. The finding of novel [B3O5F2]3- FBB and [B3O4F2]- chains in RbB3O4F2 greatly enriches the structural diversity of fluorooxoborates. PMID: 33227106 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 23, 2020 Category: Chemistry Authors: Lu Z, Zhang F, Tudi A, Yang Z, Pan S Tags: Chem Commun (Camb) Source Type: research

Negative photochromism of a blue cyanine dye.
Abstract We found a novel blue cyanine dye that exhibits negative photochromism. Upon photoexcitation of the dye solution, the blue colour visibly disappeared, and after several hours the absorbance of the solution recovered completely, indicating that the dye has high stability. PMID: 33227107 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 23, 2020 Category: Chemistry Authors: Nemoto K, Enoki M, Katoh R, Suzuki K, Murase T, Imazeki S Tags: Chem Commun (Camb) Source Type: research

Cancer cell-targeted nanoprobe for multilayer imaging of diverse biomarkers and precise photodynamic therapy.
Abstract A novel multifunctional nanoprobe was designed for cancer cell targeted multilayer imaging of two cancer biomarkers. Based on the proposed method, in situ imaging of membrane MUC1 mucin and cytoplasmic microRNA miR-21 coupled with precise photodynamic therapy was achieved. PMID: 33227111 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 23, 2020 Category: Chemistry Authors: Fu Z, Wu Y, Ren C, Song W, Zhang X, Yue M, Li Y Tags: Chem Commun (Camb) Source Type: research

A general doping rule: rational design of Ir-doped catalysts for the oxygen evolution reaction.
Abstract Revealing how to rationally select a suitable dopant or the host counterpart is greatly important for optimizing the catalytic activity of transition metal oxides (TMOs). We systematically report the adsorption trends of atomic O and H, two selected representative adsorbates, on numerous doped rutile-type TMO surfaces under two different doping modes, aiming to demonstrate adsorption energy (AE) variations of different adsorbates across doped TMO surfaces. A "host-guest interaction" induced adsorption tuning rule for the ternary doping systems is identified, which rationally directs the proposal...
Source: Chemical Communications - November 23, 2020 Category: Chemistry Authors: Zhou C, Yuan H, Hu P, Wang H Tags: Chem Commun (Camb) Source Type: research

Single-crystal-to-single-crystal transformation and proton conductivity of three hydrogen-bonded organic frameworks.
We report the cyclic single-crystal-to-single-crystal transformation of three hydrogen-bonded organic frameworks (HOFs), induced by the change of temperature and humidity, which clearly reveals that the -SO3-and -NH2 groups in UPC-H7 and UPC-H8 facilitate the diffusion of water molecules into their anhydrous structures to form hydrous UPC-H9. Their proton conductivity was studied under different humidity at varying temperature, showing that the proton conductivity is closely related to water molecules entering the crystal structures arising from the hydrogen bonded reorganization in combination with the triaxial single-cry...
Source: Chemical Communications - November 21, 2020 Category: Chemistry Authors: Wang Y, Zhang M, Yang Q, Yin J, Liu D, Shang Y, Kang Z, Wang R, Sun D, Jiang J Tags: Chem Commun (Camb) Source Type: research

Divergent functionalization of terminal alkynes enabled alkynylative [5+1] benzannulation of 3-acetoxy-1,4-enynes.
Abstract We here describe an alkynylative [5+1] benzannulation of 3-acetoxy-1,4-enynes with terminal alkynes, which enables both the construction of a benzene ring skeleton and intermolecular incorporation of an alkynyl group in a single reaction using Pd and Cu cooperative catalysts. The method represents efficient access to internal aryl alkynes through divergent functionalization of two terminal alkyne components: one alkyne serves as the one-carbon unit to realize the [5+1] benzannulation and the other alkyne as a nucleophile terminates the reaction. PMID: 33220665 [PubMed - as supplied by publisher] (Sou...
Source: Chemical Communications - November 21, 2020 Category: Chemistry Authors: Wu LJ, Yang LF, Lv GF, Li JH Tags: Chem Commun (Camb) Source Type: research

Enhanced catalytic peroxymonosulfate activation over carbon shells encapsulating cobalt ferrite via radical and nonradical routes.
ang J Abstract Well-defined carbon shells encapsulating CoFe2O4 deliver superior performance in catalytic PMS activation for organics degradation with a reaction rate constant of 0.269 min-1, 4.7 times the hollow CoFe2O4 and 2.7 times the solid carbon sphere encapsulated one. This is attributed to the comprehensive effects of the Co2+ and C[double bond, length as m-dash]O active sites for free radical and nonradical mechanisms. The nanostructured materials outperformed most of the carbon- or cobalt-iron-based catalysts. PMID: 33220678 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 21, 2020 Category: Chemistry Authors: Zhu K, Liang B, Jin C, Klencsár Z, Zhao C, Huang Y, Hu R, Wang J Tags: Chem Commun (Camb) Source Type: research

Deep eutectic solvent-catalyzed Meyer-Schuster rearrangement of propargylic alcohols under mild and bench reaction conditions.
te;a-Álvarez J, González-Sabín J Abstract The Meyer-Schuster rearrangement of propargylic alcohols into α,β-unsaturated carbonyl compounds has been revisited by setting up an atom-economic process catalyzed by a deep eutectic solvent FeCl3·6H2O/glycerol. Isomerizations take place smoothly, at room temperature, under air and with short reaction times. The unique solubilizing properties of the eutectic mixture enabled the use of a substrate concentration up to 1.0 M with the medium being recycled up to ten runs without any loss of catalytic activity. PMID: 33215181 [PubMed...
Source: Chemical Communications - November 20, 2020 Category: Chemistry Authors: Ríos-Lombardía N, Cicco L, Yamamoto K, Hernández-Fernández JA, Morís F, Capriati V, García-Álvarez J, González-Sabín J Tags: Chem Commun (Camb) Source Type: research

Dissipative aggregation-induced emission behaviour of an amino-functionalized tetraphenylethene using a pH oscillator.
Abstract A dissipative aggregation-induced emission (DAIE) system is successfully fabricated by coupling a stimuli-responsive AIE luminogens (AIEgens) with a pH oscillator. The novel DAIE system exhibits reversible, autonomous and sustainable AIE behaviour. Moreover, the DAIE behaviour can be regulated with the system temperature. The novel strategy will boost the development of bioinspired intelligent systems for real-world applications. PMID: 33215183 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 20, 2020 Category: Chemistry Authors: Liang E, Su F, Liang Y, Wang G, Xu W, Li S, Yang C, Tang J, Zhou N Tags: Chem Commun (Camb) Source Type: research

Correction: Gold(I) complexes based on six-membered phosphorus heterocycles as bio-active molecules against brain cancer.
Abstract Correction for 'Gold(i) complexes based on six-membered phosphorus heterocycles as bio-active molecules against brain cancer' by Saskia Roesch et al., Chem. Commun., 2020, DOI: 10.1039/d0cc05761d. PMID: 33215616 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 20, 2020 Category: Chemistry Authors: Roesch S, Fermi V, Rominger F, Herold-Mende C, Romero-Nieto C Tags: Chem Commun (Camb) Source Type: research

Aqueous solution processed MoS3 as an eco-friendly hole-transport layer for all-inorganic Sb2Se3 solar cells.
Abstract Here we report a solution processed environmentally friendly MoS3 hole-transport material for Sb2Se3 solar cells, where MoS3 exhibits a matched energy level relative to Sb2Se3. In the synthesis, H2S produced by the thermal decomposition of (NH4)2MoS4 is found to efficiently eliminate the antimony oxide impurity formed on the Sb2Se3 surface. Finally, the all-inorganic Sb2Se3 solar cell delivers an efficiency of 6.86% with excellent stability. PMID: 33215622 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 20, 2020 Category: Chemistry Authors: Ma Y, Yin Y, Li G, Lian W, Zhang J, Tang R, Ju H, Chen T Tags: Chem Commun (Camb) Source Type: research

Facile strategy for obtaining luminescent polymorphs based on the chirality of a boron-fused azomethine complex.
Abstract A chloro-substituted boron-fused azomethine complex (BAmCl) having a stereogenic boron center was synthesized for obtaining a luminescent chiral crystal. We succeeded in isolating the (R)- and (S)-enantiomers of BAmCl and preparing the homochiral polymorphic crystal, while we obtained the racemic crystal with rac-BAmCl. Single crystal X-ray diffraction analyses suggest that a variety of intermolecular interaction patterns and intrinsic flexibility of the molecular framework should play a significant role in stabilizing the homochiral crystal. We found the difference in molecular arrangements between the r...
Source: Chemical Communications - November 20, 2020 Category: Chemistry Authors: Ohtani S, Takeda Y, Gon M, Tanaka K, Chujo Y Tags: Chem Commun (Camb) Source Type: research

Furan-containing double tetraoxa[7]helicene and its radical cation.
u Y Abstract An unprecedented furan-based double oxa[7]helicene 1 was achieved, featuring a stable twisted conformation with π-overlap at both helical ends. The excellent conformational stability allowed for optical resolution of 1, which provided a pair of enantiomers exhibiting pronounced mirror-imaged circular dichroism and circularly polarized luminescence activity. The radical cation of 1 was obtained by chemical oxidation as evidenced by UV-Vis-NIR absorption, electron paramagnetic resonance spectroscopy and in situ spectroelectrochemistry. The present work is the starting point for the investigation of o...
Source: Chemical Communications - November 20, 2020 Category: Chemistry Authors: Chang H, Liu H, Dmitrieva E, Chen Q, Ma J, He P, Liu P, Popov AA, Cao XY, Wang XY, Zou Y, Narita A, Müllen K, Peng H, Hu Y Tags: Chem Commun (Camb) Source Type: research

Phenanthrenes/dihydrophenanthrenes: the selectivity controlled by different benzynes and allenes.
Abstract A method for the intermolecular annulation of benzynes with allenes is disclosed. This protocol utilized allenes as an unconventional diene component for the selective synthesis of phenanthrenes and dihydrophenanthrenes under the control of different benzyne precursors, featuring high atom-economy and good functional group compatibility. Density functional theory (DFT) calculations reveal that different migratory routes of the aromatic C-H bond are crucial for the observed selectivity. PMID: 33216071 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 20, 2020 Category: Chemistry Authors: Yao L, Fang B, Hu Q, Lei Y, Bao L, Hu Y Tags: Chem Commun (Camb) Source Type: research

The latest development of CoOOH two-dimensional materials used as OER catalysts.
Conclusion section. This work will provide new insights and perspectives to the readers to understand the role of CoOOH nanosheets in the OER process. PMID: 33216072 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 20, 2020 Category: Chemistry Authors: Zhang S, Yu T, Wen H, Ni Z, He Y, Guo R, You J, Liu X Tags: Chem Commun (Camb) Source Type: research

A polyoxometalate-encapsulated nanocage cluster organic framework built from {Cu4P2} units and its efficient bifunctional electrochemical performance.
Abstract The first polyoxometalate (POM)-encapsulated twenty-four-nucleus organophosphorus-copper nanocage cluster organic framework has been constructed. Here, the phosphomolybdate POMs were incorporated into an octahedral nanocage cluster organic framework, and the resulting material exhibited highly efficient bifunctional electrochemical performance. The crystalline material showed a high specific capacitance of 366.3 F g-1 at a current density of 3 A g-1. PMID: 33216080 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 20, 2020 Category: Chemistry Authors: Li S, Tan X, Yue M, Zhang L, Chai D, Wang W, Pan H, Fan L, Zhao C Tags: Chem Commun (Camb) Source Type: research

Halogen bonding to the azulene π-system: cocrystal design of pleochroism.
We describe the rational development of a design for pleochroic molecular solids, by using C-Iπ halogen bonds to pre-organise different chromophores in a cocrystal. Using the structure of a known naphthalene cocrystal as a blueprint, we demonstrate how a highly robust C-Iπ motif permits the systematic exchange of original cocrystal components with azobenzene and azulene, resulting in optically interesting dichroic or pleochroic materials. PMID: 33210102 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 19, 2020 Category: Chemistry Authors: Vainauskas J, Topić F, Bushuyev OS, Barrett CJ, Friščić T Tags: Chem Commun (Camb) Source Type: research

A new type of novel salt-inclusion chalcogenide with ultralow thermal conductivity.
Abstract The design and development of novel chalcogenides with ultralow thermal conductivity is extremely important but very challenging for promoting the efficiencies of thermoelectric (TE) materials. Herein, a new type of salt-inclusion chalcogenide (SIC), [Rb6Cl][RE23Mn7Se44] (RE = Ho-Yb), was discovered via a modified flux method. They possessed [RESe6] and [MSe6] (M = RE/Mn) octahedra as basic building units, which interlinked to form a three-dimensional quasi-NaCl-type [RE23Mn7Se44]5- host framework, where the [Rb6Cl]5+ guest ions resided. Interestingly, these isomorphic compounds showed ultralow thermal co...
Source: Chemical Communications - November 19, 2020 Category: Chemistry Authors: Chen H, Liu PF, Lin H, Wu XT Tags: Chem Commun (Camb) Source Type: research

Molecular designs for expanding the limits of ultralong C-C bonds and ultrashort HH non-bonded contacts.
Abstract Recent experiments have reported the formation of very long C-C bonds (dC-C> 1.80 Å) and very short HH non-bonded contacts (dHH 1.829 Å and a planar amine reminiscent of a transition-state like structure for ammonia inversion. The small and narrow barrier favours rapid inversion through quantum mechanical tunnelling (QMT) and produces a translationally averaged planar amine as observed in the experiments. On the other hand, designing specific confined molecular cavities or chambers like in,in-bis(hydrosilane) or its germanane analogs furnishes an ultrashort HH distance = 1.47 Å and 1....
Source: Chemical Communications - November 19, 2020 Category: Chemistry Authors: Mandal N, Datta A Tags: Chem Commun (Camb) Source Type: research