Oxygen-doped hollow, porous NiCoP nanocages derived from Ni-Co prussian blue analogs for oxygen evolution
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc00535a. Online ahead of print.ABSTRACTAn oxygen-doped, hollow, porous NiCoP nanocage (O-NiCoP Cages) electrocatalyst was synthesized derived from Ni-Co Prussian blue analogs. O-NiCoP Cages exhibited an overpotential of 310 mV at 10 mA cm-2 and a Tafel slope of 84 mV dec-1, significantly higher than that of undoped NiCoP nanocages, and also better than that of RuO2 and several reported phosphide electrocatalysts. This work provides a new strategy for the design of highly efficient oxygen evolution reaction (OER) electrocatalysts based on hollow, nanostructured and heteroatom...
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Di Li Changjian Zhou Yingying Xing Xiangli Shi Wanxia Ma Longhua Li Deli Jiang Weidong Shi Source Type: research

Bulk assembly of a 0D organic tin(II)chloride hybrid with high anti-water stability
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc02814f. Online ahead of print.ABSTRACTA lead-free compound, (TBAC)SnCl3 (TBAC = tetrabutylammonium chloride), with high anti-water stability was reported, which can be stable in water for 24 hours. Upon photoexcitation, this compound exhibits a green photoluminescence (PL) centered at 523 nm with a larger Stokes shift of 260 nm at room temperature (RT), stemming from self-trapped exciton (STE) emission.PMID:34318799 | DOI:10.1039/d1cc02814f (Source: Chemical Communications)
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Hui Peng Xinxin Wang Zhenheng Zhang Ye Tian Yonghao Xiao Jinming Hu Jianping Wang Bingsuo Zou Source Type: research

Deoxyfluorination of alcohols with aryl fluorosulfonates
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc02617h. Online ahead of print.ABSTRACTAryl fluorosulfonates are developed as a deoxyfluorinating reagent in the transformation of primary and secondary alcohols into the corresponding alkyl fluorides. These reagents feature easy availability, low-cost, high stability and high efficiency. Diverse functionalities including aldehyde, ketone, ester, halogen, nitro, alkene, and alkyne are well tolerated under mild reaction conditions.PMID:34318800 | DOI:10.1039/d1cc02617h (Source: Chemical Communications)
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Xiu Wang Min Zhou Qinghe Liu Chuanfa Ni Zhongbo Fei Wei Li Jinbo Hu Source Type: research

Oxygen vacancies boosted the electrochemical kinetics of Nb < sub > 2 < /sub > O < sub > 5- < em > x < /em > < /sub > for superior lithium storage
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc02299g. Online ahead of print.ABSTRACTThe introduction of oxygen vacancies (OVs) into Nb2O5 can not only provide more active sites for lithium storage but also change the electronic structure of Nb2O5 to boost electron/ion transport kinetics. Consequently, the defective Nb2O5-x exhibits high lithium storage capacity, superior rate capability, and cycling stability.PMID:34318801 | DOI:10.1039/d1cc02299g (Source: Chemical Communications)
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Sheng Li Yingxue Cui Rong Kang Bobo Zou Dickon H L Ng Sherif A El-Khodary Xianhu Liu Jingxia Qiu Jiabiao Lian Huaming Li Source Type: research

An "AND"-logic-gate-based fluorescent probe with dual reactive sites for monitoring extracellular methylglyoxal level changes of activated macrophages
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc01859k. Online ahead of print.ABSTRACTAn "AND"-logic-gate-based fluorescent probe NAP-DCP-4 with dual reactive sites is reported, which has improved selectivity for methylglyoxal over glyoxal, featuring formaldehyde-enhanced methylglyoxal detection and irreversible and reversible turn-on fluorescence responses at different excitation wavelengths. Its cell-impermeability enables facile monitoring of extracellular methylglyoxal level changes in the supernatant of activated macrophages.PMID:34318802 | DOI:10.1039/d1cc01859k (Source: Chemical Communications)
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Wenli Wang Junwei Chen Huijuan Ma Wanjin Xing Nan Lv Baoning Zhang Huan Xu Wei Wang Kaiyan Lou Source Type: research

Ultrafine fluorene-pyridine oligoelectrolyte nanoparticles for supersensitive fluorescence sensing of heparin and protamine
Chem Commun (Camb). 2021 Jul 28. doi: 10.1039/d1cc01969d. Online ahead of print.ABSTRACTA new fluorene-pyridine oligoelectrolyte (OFP) is rationally proposed and readily synthesized via a simple one-pot Sonogashira approach. Hence, an unexpectedly small cationic oligomer nanosensor (i.e. OFPNPs, ∼ 1.2 nm in diameter) was conveniently fabricated owing to the enhanced flexibility endowed by the meta-substituted pyridyl unit. Inspiringly, this facile nanoplatform with low cytotoxicity favors the ultrasensitive fluorescence assay for heparin and protamine with a detection limit (LOD, S/N = 3) as low as 1.2 ng mL-1 and 0.5 ...
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Huifeng Du Li Zhang Wensheng Mao Yaqian Zhao Hongmei Huang Yi Xiao Youyu Zhang Xiaoxiao He Kemin Wang Source Type: research

Low-power consumption light-stimulated synaptic transistors based on natural carotene and organic semiconductors
Chem Commun (Camb). 2021 Jul 28. doi: 10.1039/d1cc03060d. Online ahead of print.ABSTRACTDeveloping synaptic devices with environment-friendly materials is a promising research direction. Here, light-stimulated synaptic transistors based on natural carotene and organic semiconductors were developed. Several important functions similar to biological synapses were realized and an ultra-low power consumption of 3.4 × 10-18 J was achieved.PMID:34318806 | DOI:10.1039/d1cc03060d (Source: Chemical Communications)
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Ben Yang Yan Wang Zhekun Hua Junyao Zhang Li Li Dandan Hao Pu Guo Lize Xiong Jia Huang Source Type: research

Synthesis of porphyrin-incorporating covalent organic frameworks for sonodynamic therapy
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc02902a. Online ahead of print.ABSTRACTPorphyrin-incorporating covalent organic frameworks were synthesized at room temperature. The resulting products with uniform morphology and excellent crystallinity exhibited good singlet oxygen generation ability. Both in vitro and in vivo experiments demonstrated the significant antitumor efficiency via sonodynamic therapy.PMID:34318809 | DOI:10.1039/d1cc02902a (Source: Chemical Communications)
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Sainan Liu Ying Zhou Chunling Hu Lihan Cai Zhendong Liu Maolin Pang Source Type: research

Inside front cover
Chem Commun (Camb). 2021 Jul 27;57(60):7326. doi: 10.1039/d1cc90273c.NO ABSTRACTPMID:34318810 | DOI:10.1039/d1cc90273c (Source: Chemical Communications)
Source: Chemical Communications - July 28, 2021 Category: Chemistry Source Type: research

Front cover
Chem Commun (Camb). 2021 Jul 27;57(60):7325. doi: 10.1039/d1cc90272e.NO ABSTRACTPMID:34318812 | DOI:10.1039/d1cc90272e (Source: Chemical Communications)
Source: Chemical Communications - July 28, 2021 Category: Chemistry Source Type: research

Back cover
Chem Commun (Camb). 2021 Jul 27;57(60):7453-7454. doi: 10.1039/d1cc90275j.NO ABSTRACTPMID:34318814 | DOI:10.1039/d1cc90275j (Source: Chemical Communications)
Source: Chemical Communications - July 28, 2021 Category: Chemistry Source Type: research

Tertiary cyclopropyl carbagermatranes: synthesis and cross-coupling
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc02930d. Online ahead of print.ABSTRACTThe construction of the cyclopropyl quaternary carbon center can afford a series of 1,1-olefin bioisosteres. Here, we report tertiary cyclopropyl carbagermatranes, which can be easily obtained by the zinc-mediated decarboxylation of NHP esters. In addition, they exhibit efficient reactivity in the palladium-catalyzed cross-coupling reaction and orthogonal reactivity with boron reagents, therefore acting as robust nucleophiles for the synthesis of tertiary cyclopropane and efficient intermediates for the formation of quaternary centers.P...
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Shuo Yang Wei-Tao Jiang Bin Xiao Source Type: research

Contents list
Chem Commun (Camb). 2021 Jul 27;57(60):7327-7334. doi: 10.1039/d1cc90274a.NO ABSTRACTPMID:34318816 | DOI:10.1039/d1cc90274a (Source: Chemical Communications)
Source: Chemical Communications - July 28, 2021 Category: Chemistry Source Type: research

Sensitive imaging of tumors using a nitroreductase-activated fluorescence probe in the NIR-II window
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc03232a. Online ahead of print.ABSTRACTA nitroreductase (NTR)-activated NIR-II fluorescence probe for tumor imaging is reported. The probe can emit fluorescence in the range of 900-1300 nm, and target hypoxic tumors with NTR overexpression, thus allowing for accurate delineation of tumor margins through deep penetration.PMID:34318817 | DOI:10.1039/d1cc03232a (Source: Chemical Communications)
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Xiaofan Zhang Xiaohua Li Wen Shi Huimin Ma Source Type: research

Selective construction of fused heterocycles by an iridium-catalyzed reductive three-component annulation reaction
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc03332h. Online ahead of print.ABSTRACTCatalytic conversion of ubiquitously distributed but less reactive N-heteroarenes into functional products remains to date a challenge. Here, through an initial pretreatment of N-heteroarenes with alkyl bromide, we describe a syn-selective construction of functional fused heterocycles via iridium catalyzed reductive annulation of N-heteroarenium salts with formaldehyde and cyclic 1,3-diketones or 4-hydroxycoumarins, proceeding with broad substrate scope, good functional group compatibility, readily available feedstocks, and high step an...
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Lingzhen Gong He Zhao Jian Yang Huanfeng Jiang Min Zhang Source Type: research

Systematic reductive oligomerization of isocyanides with a vanadium(II) complex
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc03463d. Online ahead of print.ABSTRACTUsing a V(ii) complex as a reducing reagent, we demonstrate controlled reduction of isocyanides, resulting in decyanation of alkyl isocyanides to form a V(iii) cyanide complex or oligomerization of aryl isocyanides to form trimers and a tetramer. The pathways leading to the trimers involve a divanadium ynediamido intermediate, which further reacts with the third isocyanide molecule to selectively produce a tri(imino)deltate or an indolenine complex, by altering the temperature and stoichiometry.PMID:34318820 | DOI:10.1039/d1cc03463d (So...
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Sui Hasegawa Yutaka Ishida Hiroyuki Kawaguchi Source Type: research

Sulfonyl radical triggered selective iodosulfonylation and bicyclization of 1,6-dienes
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc03252f. Online ahead of print.ABSTRACTA novel sulfonyl radical triggered selective iodosulfonylation and bicyclization of 1,6-dienes has been described for the first time. High selectivity and efficiency, mild reaction conditions, excellent functional group compatibility, and broad substrate scope are the attractive features of this synthetic protocol, which provides a unique platform for precise radical cyclization.PMID:34318821 | DOI:10.1039/d1cc03252f (Source: Chemical Communications)
Source: Chemical Communications - July 28, 2021 Category: Chemistry Authors: Shi-Ping Wu Dong-Kai Wang Qing-Qing Kang Guo-Ping Ge Hongxing Zheng Meiling Zhu Ting Li Jun-Qi Zhang Wen-Ting Wei Source Type: research

Recognition of hydrophilic molecules in deep cavitand hosts with water-mediated hydrogen bonds
We describe new container host molecules - deep cavitands with benzimidazole walls and ionic feet - to recognize highly hydrophilic guest molecules in water. The aromatic surfaces of the cavity recognize hydrophobic portions of the guest while bound water molecules mediate hydrogen bonding in the complex. Spectroscopic (NMR) evidence indicates slow in/out exchange on the chemical shift timescale and thermodynamic (ITC) methods show large association constants (Ka up to 6 × 104 M-1) for complexation of small, water-soluble molecules such as THF and dioxane. Quantum chemical calculations are employed to optimize the ho...
Source: Chemical Communications - July 27, 2021 Category: Chemistry Authors: Hua-Wei Guan Yu-Jie Zhu Joannes Peters Oriana Brea Fahmi Himo Julius Rebek Yang Yu Source Type: research

Constructing multicomponent cooperative functional systems using metal complexes of short flexible peptides
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc03101e. Online ahead of print.ABSTRACTThe construction of cooperative systems comprising several units is an essential challenge for artificial systems toward the development of sophisticated functions comparable to those found in biological systems. Flexible frameworks possessing various functional groups that can form weak intra/intermolecular interactions similar to those observed in biological systems have promising design features for artificial systems used to control cooperative systems. However, it is difficult to construct multiple component systems>1 nm using t...
Source: Chemical Communications - July 27, 2021 Category: Chemistry Authors: Ryosuke Miyake Source Type: research

Rhodium(III)-catalyzed [5+1] annulation of 2-alkenylphenols with maleimides: access to highly functionalized spirocyclic skeletons
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc01758f. Online ahead of print.ABSTRACTA new edition of [5+1] annulation reaction of maleimides with 2-alkenylphenols has been discovered under a Rh(iii)-catalytic system. The process leads to an efficient synthesis of valued spirocyclic scaffolds bearing an oxygen-containing spiro carbon in a single step and shows a broad substrate scope with good functional group tolerance. The synthetic utility has been exemplified by synthesizing highly functionalized 2,2-disubstituted-2H-chromene skeletons and a gram-scale synthesis with a low catalyst loading.PMID:34313254 | DOI:10.103...
Source: Chemical Communications - July 27, 2021 Category: Chemistry Authors: Anil Kumar Kandikere Ramaiah Prabhu Source Type: research

Space-confined construction of two-dimensional nitrogen-doped carbon with encapsulated bimetallic nanoparticles as oxygen electrocatalysts
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc02591k. Online ahead of print.ABSTRACTA space-confined strategy has been used to control the pyrolysis of two-dimensional (2D) NiCo-MOF@ZIF-L(Zn). A thin SiO2 layer as a confined space could avoid the destruction of the 2D morphology during pyrolysis and expose more active sites. The obtained NiCo-NC material exhibits high ORR and Zn-air battery performance.PMID:34313269 | DOI:10.1039/d1cc02591k (Source: Chemical Communications)
Source: Chemical Communications - July 27, 2021 Category: Chemistry Authors: Fang Wang Yang Xu Yanzhi Wang Zuozhong Liang Ru Zhang Yaru Wang Hang Zhang Wei Zhang Rui Cao Haoquan Zheng Source Type: research

Colorimetric and fluorometric dual-readout protein kinase assay by tuning the active surface of nanoceria
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc03357c. Online ahead of print.ABSTRACTHerein, we demonstrate that the active surface of nanoceria can be fine-tuned by phosphorylated peptides. Accordingly, a colorimetric and fluorometric dual-readout strategy is rationally developed for assaying protein kinase activity. This feature not only enables the versatile monitoring of peptide phosphorylation but also broadens the application scope of nanoceria.PMID:34313270 | DOI:10.1039/d1cc03357c (Source: Chemical Communications)
Source: Chemical Communications - July 27, 2021 Category: Chemistry Authors: Sujuan Sun Lijun Zhang Xiaohui Lu Wei Ren Chenghui Liu Source Type: research

HFIP promoted thio(hetero)arylation of imidazoheterocycles under metal- and base-free conditions
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc03089b. Online ahead of print.ABSTRACTA new reaction methodology has been developed for HFIP promoted Thio(hetero)arylation of imidazoheterocycles under metal and base-free conditions. To the best of our knowledge, this is the first report that describes linking of imidazopyridines with electron deficient heteroarenes through a sulphur atom and also for the synthesis of most of these compounds. The reaction conditions are well tolerated by almost all kinds of 2-chloroheteroarenes and a wide range of imidazoheterocycles. The synthesized compounds can show significant biologi...
Source: Chemical Communications - July 27, 2021 Category: Chemistry Authors: Narendra R Chaubey Anant R Kapdi Source Type: research

Controllable sulphur vacancies confined in nanoporous ZnS nanoplates for visible-light photocatalytic hydrogen evolution
Chem Commun (Camb). 2021 Jul 27. doi: 10.1039/d1cc02593g. Online ahead of print.ABSTRACTControllable sulphur vacancies (Sv) confined in nanoporous ZnS nanoplates (Sv-ZnS) were prepared successfully via rapid heat treatment of ZnS(en)0.5 nanoplates. Sv with controllable concentrations originating from the in situ doping of N atoms endowed Sv-ZnS with a visible-light photocatalytic H2 production activity, having a positive linear correlation with Sv concentration.PMID:34313281 | DOI:10.1039/d1cc02593g (Source: Chemical Communications)
Source: Chemical Communications - July 27, 2021 Category: Chemistry Authors: Jinhua Xiong Yuling Li Shaojuan Lu Wei Guo Junhua Zou Zhibin Fang Source Type: research

An ion transport switch based on light-responsive conformation-dependent G-quadruplex transmembrane channels
Chem Commun (Camb). 2021 Jul 26. doi: 10.1039/d1cc03273a. Online ahead of print.ABSTRACTA light-responsive ion transport switch has been developed based on conformation-dependent azobenzene-incorporated lipophilic G-quadruplex channels, which provides a new smart approach for the selective transport of K+ ions across the lipid membrane.PMID:34308935 | DOI:10.1039/d1cc03273a (Source: Chemical Communications)
Source: Chemical Communications - July 26, 2021 Category: Chemistry Authors: Chunying Li Hui Chen Xiaohai Yang Kemin Wang Jianbo Liu Source Type: research

Mechanistic investigation of benzene esterification by K < sub > 2 < /sub > CO < sub > 3 < /sub > /TiO < sub > 2 < /sub > : the catalytic role of the multifunctional interface
Chem Commun (Camb). 2021 Jul 26. doi: 10.1039/d1cc02513a. Online ahead of print.ABSTRACTPotassium carbonate dispersed over a defective TiO2 support (K2CO3/TiO2) is an efficient catalyst for benzene esterification with CO2 and CH3OH. Density functional theory calculations reveal that this unique catalytic reactivity originates from the cooperation of the Ti3+/K+ surface sites. The K2CO3 promotor steers the stabilization of surface intermediates thus preventing catalyst deactivation.PMID:34308941 | DOI:10.1039/d1cc02513a (Source: Chemical Communications)
Source: Chemical Communications - July 26, 2021 Category: Chemistry Authors: Jittima Meeprasert Guanna Li Evgeny A Pidko Source Type: research

Rapid construction of fluorescence quenching-based immunosensor Q-bodies using α-helical coiled-coil peptides
Chem Commun (Camb). 2021 Jul 26. doi: 10.1039/d1cc02605d. Online ahead of print.ABSTRACTHere, we report a rapid and efficient method to fabricate Quenchbodies (Q-bodies) that can detect targets with antigen-dependent fluorescence augmentation using a stable coiled-coil peptide pair, E4 and K4 (coiled Q-body, CQ-body). The CQ-body allowed antigen detection not only in buffer but also in 50% plasma. Furthermore, we describe FRET-type CQ-bodies using a dual-coloured K4 peptide, which allowed a more precise antigen quantification. Lastly, successful fabrication of nanobody-based CQ-body shows its applicability to a range of an...
Source: Chemical Communications - July 26, 2021 Category: Chemistry Authors: Takanobu Yasuda Akihito Inoue Tetsuya Kitaguchi Hiroshi Ueda Source Type: research

From thiophosphate to chalcohalide: mixed-anion AgS < sub > < em > x < /em > < /sub > Cl < sub > < em > y < /em > < /sub > ligands concurrently enhancing nonlinear optical effects and laser-damage threshold
In this study, we propose a new design strategy that introduces unique mixed-anion AgSxCly ligands into thiophosphate to afford a successful synthesis of a promising Ag5PS4Cl2 IR NLO chalcohalide. Compared with chlorine-free Ag3PS4, Ag5PS4Cl2 undergoes overall performance enhancement and achieves a good balance between large NLO effect (2.0 × Ag3PS4) and high laser damage threshold (3.8 × Ag3PS4). Theoretical analysis further indicates that AgSxCly groups are the new superior NLO-active units since they can maintain the wide bandgap while concurrently making a great contribution to the origin of NLO effects. Th...
Source: Chemical Communications - July 26, 2021 Category: Chemistry Authors: Lihua Gao Yu Chu Xiaowen Wu Bingbing Zhang Kui Wu Source Type: research

Dynamics of a [2]rotaxane wheel in a crystalline molecular solid
Chem Commun (Camb). 2021 Jul 26. doi: 10.1039/d1cc03009d. Online ahead of print.ABSTRACTAn H-shaped [2]rotaxane comprising a bis(benzimidazole) axle and a 24-membered crown ether wheel appended with four trityl groups forms a highly crystalline material with enough free volume to allow large amplitude motion of the interlocked macrocycle. Variable-temperature (VT) 2H solid-state nuclear magnetic resonance (SSNMR) was used to characterize the dynamics of the [2]rotaxane wheel in this material.PMID:34308949 | DOI:10.1039/d1cc03009d (Source: Chemical Communications)
Source: Chemical Communications - July 26, 2021 Category: Chemistry Authors: Giorgio Baggi Benjamin H Wilson Ayan Dhara Christopher A O'Keefe Robert W Schurko Stephen J Loeb Source Type: research

An ion transport switch based on light-responsive conformation-dependent G-quadruplex transmembrane channels
Chem Commun (Camb). 2021 Jul 26. doi: 10.1039/d1cc03273a. Online ahead of print.ABSTRACTA light-responsive ion transport switch has been developed based on conformation-dependent azobenzene-incorporated lipophilic G-quadruplex channels, which provides a new smart approach for the selective transport of K+ ions across the lipid membrane.PMID:34308935 | DOI:10.1039/d1cc03273a (Source: Chemical Communications)
Source: Chemical Communications - July 26, 2021 Category: Chemistry Authors: Chunying Li Hui Chen Xiaohai Yang Kemin Wang Jianbo Liu Source Type: research

Mechanistic investigation of benzene esterification by K < sub > 2 < /sub > CO < sub > 3 < /sub > /TiO < sub > 2 < /sub > : the catalytic role of the multifunctional interface
Chem Commun (Camb). 2021 Jul 26. doi: 10.1039/d1cc02513a. Online ahead of print.ABSTRACTPotassium carbonate dispersed over a defective TiO2 support (K2CO3/TiO2) is an efficient catalyst for benzene esterification with CO2 and CH3OH. Density functional theory calculations reveal that this unique catalytic reactivity originates from the cooperation of the Ti3+/K+ surface sites. The K2CO3 promotor steers the stabilization of surface intermediates thus preventing catalyst deactivation.PMID:34308941 | DOI:10.1039/d1cc02513a (Source: Chemical Communications)
Source: Chemical Communications - July 26, 2021 Category: Chemistry Authors: Jittima Meeprasert Guanna Li Evgeny A Pidko Source Type: research

Rapid construction of fluorescence quenching-based immunosensor Q-bodies using α-helical coiled-coil peptides
Chem Commun (Camb). 2021 Jul 26. doi: 10.1039/d1cc02605d. Online ahead of print.ABSTRACTHere, we report a rapid and efficient method to fabricate Quenchbodies (Q-bodies) that can detect targets with antigen-dependent fluorescence augmentation using a stable coiled-coil peptide pair, E4 and K4 (coiled Q-body, CQ-body). The CQ-body allowed antigen detection not only in buffer but also in 50% plasma. Furthermore, we describe FRET-type CQ-bodies using a dual-coloured K4 peptide, which allowed a more precise antigen quantification. Lastly, successful fabrication of nanobody-based CQ-body shows its applicability to a range of an...
Source: Chemical Communications - July 26, 2021 Category: Chemistry Authors: Takanobu Yasuda Akihito Inoue Tetsuya Kitaguchi Hiroshi Ueda Source Type: research

From thiophosphate to chalcohalide: mixed-anion AgS < sub > < em > x < /em > < /sub > Cl < sub > < em > y < /em > < /sub > ligands concurrently enhancing nonlinear optical effects and laser-damage threshold
In this study, we propose a new design strategy that introduces unique mixed-anion AgSxCly ligands into thiophosphate to afford a successful synthesis of a promising Ag5PS4Cl2 IR NLO chalcohalide. Compared with chlorine-free Ag3PS4, Ag5PS4Cl2 undergoes overall performance enhancement and achieves a good balance between large NLO effect (2.0 × Ag3PS4) and high laser damage threshold (3.8 × Ag3PS4). Theoretical analysis further indicates that AgSxCly groups are the new superior NLO-active units since they can maintain the wide bandgap while concurrently making a great contribution to the origin of NLO effects. Th...
Source: Chemical Communications - July 26, 2021 Category: Chemistry Authors: Lihua Gao Yu Chu Xiaowen Wu Bingbing Zhang Kui Wu Source Type: research

Dynamics of a [2]rotaxane wheel in a crystalline molecular solid
Chem Commun (Camb). 2021 Jul 26. doi: 10.1039/d1cc03009d. Online ahead of print.ABSTRACTAn H-shaped [2]rotaxane comprising a bis(benzimidazole) axle and a 24-membered crown ether wheel appended with four trityl groups forms a highly crystalline material with enough free volume to allow large amplitude motion of the interlocked macrocycle. Variable-temperature (VT) 2H solid-state nuclear magnetic resonance (SSNMR) was used to characterize the dynamics of the [2]rotaxane wheel in this material.PMID:34308949 | DOI:10.1039/d1cc03009d (Source: Chemical Communications)
Source: Chemical Communications - July 26, 2021 Category: Chemistry Authors: Giorgio Baggi Benjamin H Wilson Ayan Dhara Christopher A O'Keefe Robert W Schurko Stephen J Loeb Source Type: research

Phosphorylated-calix[4]arene double-deckers of single rare earth metal ions
Chem Commun (Camb). 2021 Jul 25. doi: 10.1039/d1cc02910j. Online ahead of print.ABSTRACTCombination of phosphoryl and calix[4]arene moieties in the same organic framework (LPO) directs the formation of homoleptic double-decker complexes [LnIII(LPO)2](OTf)3 for Ln = Tb and Dy, with the latter displaying slow relaxation of the magnetisation.PMID:34304255 | DOI:10.1039/d1cc02910j (Source: Chemical Communications)
Source: Chemical Communications - July 25, 2021 Category: Chemistry Authors: Marjan Hosseinzadeh Sergio Sanz Jan van Leusen Natalya V Izarova Euan K Brechin Scott J Dalgarno Paul K ögerler Source Type: research

A mitochondria-targeted fluorescent probe for monitoring endogenous cysteine in living cells and zebrafish
Chem Commun (Camb). 2021 Jul 25. doi: 10.1039/d1cc03307g. Online ahead of print.ABSTRACTAt the organelle level, pathogenesis due to abnormal concentrations of cysteine (Cys) is of great significance for the early diagnosis and treatment of related diseases. Generally speaking, organelle localization requires the participation of specific target groups, which increases the difficulty of synthesis. Herein, through simple synthesis, a novel biflavone derivative (BFD) that exhibits excited-state intramolecular proton transfer (ESIPT) was obtained and successfully located in mitochondria without target groups. The probe BFD can...
Source: Chemical Communications - July 25, 2021 Category: Chemistry Authors: Yingshuang Chen Xiuli Zhong Xinrui Yang Shanmei Zhu Yuliang Jiang Can Jin Source Type: research

A p-type PbS quantum dot ink with improved stability for solution processable optoelectronics
Chem Commun (Camb). 2021 Jul 25. doi: 10.1039/d1cc03014k. Online ahead of print.ABSTRACTA highly stable p-type PbS-QDs ink is prepared using a single-step biphasic ligand exchange route, overcoming instability encountered in previous reports. Chemical characterization of the ink reveals 3-mercaptopriopionic acid (MPA) capped QDs stable in benzylamine solvent over a period of weeks or longer. The film resistivity, 1.45 kΩ cm, is an order magnitude lower and surface roughness, ∼ 0.5 nm, is superior vs. PbS films reported so far, and proof of concept photovoltaic devices showed efficiency> 5.5%.PMID:34304259 | DO...
Source: Chemical Communications - July 25, 2021 Category: Chemistry Authors: Fiaz Ahmed John H Dunlap Perry J Pellechia Andrew B Greytak Source Type: research

< em > C < /em > -Methylenation of anilines and indoles with CO < sub > 2 < /sub > and hydrosilane using a pentanuclear zinc complex catalyst
Chem Commun (Camb). 2021 Jul 24. doi: 10.1039/d1cc03675k. Online ahead of print.ABSTRACTThe one-step C-methylenation of anilines and indoles with CO2 and phenylsilane was catalyzed by a pentanuclear ZnII complex to give diarylmethanes via geminal C-H and C-C bond formation. It is proposed that the zinc-hydride complex generated in situ is a catalytically active species and that bis(silyl)acetal is a key intermediate. When aniline was used as a substrate, both the C-methylenation and N-methylation proceeded.PMID:34302161 | DOI:10.1039/d1cc03675k (Source: Chemical Communications)
Source: Chemical Communications - July 24, 2021 Category: Chemistry Authors: Kazuto Takaishi Hiroyasu Kosugi Ritsuki Nishimura Yuya Yamada Tadashi Ema Source Type: research

Homolytic cleavage of diboron(4) compounds using diazabutadiene derivatives
Chem Commun (Camb). 2021 Jul 24. doi: 10.1039/d1cc02881b. Online ahead of print.ABSTRACTDiazabutadiene derivatives have been identified as a distinct class of reagents, capable of cleaving B-B bonds of diboron(4). The cleavage is accompanied by the formation of a new C[double bond, length as m-dash]C bond and the product geometry is highly dependent on the substituents on the DAB units. Preliminary mechanistic investigations suggest a concerted mechanism and the absence of any radical intermediates.PMID:34302163 | DOI:10.1039/d1cc02881b (Source: Chemical Communications)
Source: Chemical Communications - July 24, 2021 Category: Chemistry Authors: Piyush Kumar Verma Naresh Kumar Meher K Geetharani Source Type: research

< em > C < /em > -Methylenation of anilines and indoles with CO < sub > 2 < /sub > and hydrosilane using a pentanuclear zinc complex catalyst
Chem Commun (Camb). 2021 Jul 24. doi: 10.1039/d1cc03675k. Online ahead of print.ABSTRACTThe one-step C-methylenation of anilines and indoles with CO2 and phenylsilane was catalyzed by a pentanuclear ZnII complex to give diarylmethanes via geminal C-H and C-C bond formation. It is proposed that the zinc-hydride complex generated in situ is a catalytically active species and that bis(silyl)acetal is a key intermediate. When aniline was used as a substrate, both the C-methylenation and N-methylation proceeded.PMID:34302161 | DOI:10.1039/d1cc03675k (Source: Chemical Communications)
Source: Chemical Communications - July 24, 2021 Category: Chemistry Authors: Kazuto Takaishi Hiroyasu Kosugi Ritsuki Nishimura Yuya Yamada Tadashi Ema Source Type: research

Homolytic cleavage of diboron(4) compounds using diazabutadiene derivatives
Chem Commun (Camb). 2021 Jul 24. doi: 10.1039/d1cc02881b. Online ahead of print.ABSTRACTDiazabutadiene derivatives have been identified as a distinct class of reagents, capable of cleaving B-B bonds of diboron(4). The cleavage is accompanied by the formation of a new C[double bond, length as m-dash]C bond and the product geometry is highly dependent on the substituents on the DAB units. Preliminary mechanistic investigations suggest a concerted mechanism and the absence of any radical intermediates.PMID:34302163 | DOI:10.1039/d1cc02881b (Source: Chemical Communications)
Source: Chemical Communications - July 24, 2021 Category: Chemistry Authors: Piyush Kumar Verma Naresh Kumar Meher K Geetharani Source Type: research

< em > C < /em > -Methylenation of anilines and indoles with CO < sub > 2 < /sub > and hydrosilane using a pentanuclear zinc complex catalyst
Chem Commun (Camb). 2021 Jul 24. doi: 10.1039/d1cc03675k. Online ahead of print.ABSTRACTThe one-step C-methylenation of anilines and indoles with CO2 and phenylsilane was catalyzed by a pentanuclear ZnII complex to give diarylmethanes via geminal C-H and C-C bond formation. It is proposed that the zinc-hydride complex generated in situ is a catalytically active species and that bis(silyl)acetal is a key intermediate. When aniline was used as a substrate, both the C-methylenation and N-methylation proceeded.PMID:34302161 | DOI:10.1039/d1cc03675k (Source: Chemical Communications)
Source: Chemical Communications - July 24, 2021 Category: Chemistry Authors: Kazuto Takaishi Hiroyasu Kosugi Ritsuki Nishimura Yuya Yamada Tadashi Ema Source Type: research

Homolytic cleavage of diboron(4) compounds using diazabutadiene derivatives
Chem Commun (Camb). 2021 Jul 24. doi: 10.1039/d1cc02881b. Online ahead of print.ABSTRACTDiazabutadiene derivatives have been identified as a distinct class of reagents, capable of cleaving B-B bonds of diboron(4). The cleavage is accompanied by the formation of a new C[double bond, length as m-dash]C bond and the product geometry is highly dependent on the substituents on the DAB units. Preliminary mechanistic investigations suggest a concerted mechanism and the absence of any radical intermediates.PMID:34302163 | DOI:10.1039/d1cc02881b (Source: Chemical Communications)
Source: Chemical Communications - July 24, 2021 Category: Chemistry Authors: Piyush Kumar Verma Naresh Kumar Meher K Geetharani Source Type: research

Ultra-thin films of amphiphilic lanthanide complexes: multi-colour emission from molecular monolayers
We report the synthesis and Langmuir-Blodgett deposition of 4 brightly emissive lanthanide amphiphiles that can be co-deposited to give multi-emissive ultra-thin films where two, three and four distinct lanthanide emission profiles are observed. To the best of our knowledge, this is the first report of a four-component emissive Langmuir-Blodgett film.PMID:34296228 | DOI:10.1039/d1cc02628c (Source: Chemical Communications)
Source: Chemical Communications - July 23, 2021 Category: Chemistry Authors: Alex T O'Neil John A Harrison Jonathan A Kitchen Source Type: research

Inhibition of protein synthesis through RNA-based tandem G-quadruplex formation
Chem Commun (Camb). 2021 Jul 23. doi: 10.1039/d1cc02995a. Online ahead of print.ABSTRACTWe demonstrate that an RNA template containing eight GGG repeat sequences exhibits a unique tandem G-quadruplex structure in which two individual G-quadruplexes are aligned in close proximity. Because of their unexpected stability, tandem G-quadruplexes formed in the coding region of mRNA strands effectively inhibited in vitro protein synthesis.PMID:34296230 | DOI:10.1039/d1cc02995a (Source: Chemical Communications)
Source: Chemical Communications - July 23, 2021 Category: Chemistry Authors: Masaki Hagihara Source Type: research

Copper/Lewis base cooperatively catalyzed asymmetric allylic alkylation of Morita-Baylis-Hillman carbonates with azomethine ylides
Chem Commun (Camb). 2021 Jul 23. doi: 10.1039/d1cc02861h. Online ahead of print.ABSTRACTIn this paper, an asymmetric allylic alkylation of easily available azomethine ylides with Morita-Baylis-Hillman (MBH) carbonates through a copper (i)/Lewis base cooperative catalysis strategy has been realized. The co-catalyzed asymmetric allylic alkylation provided the corresponding amino acid derivatives in up to 90% yields with up to 99% ee as well as good to excellent regioselectivity.PMID:34296236 | DOI:10.1039/d1cc02861h (Source: Chemical Communications)
Source: Chemical Communications - July 23, 2021 Category: Chemistry Authors: Yimin Hu Zhengyang Yan Wangyu Shi Jianning Liao Min Liu Ting Pan Wei Wang Yongjun Wu Xianghong Hao Hongchao Guo Source Type: research

Sequential C-H activation enabled expedient delivery of polyfunctional arenes
Chem Commun (Camb). 2021 Jul 23. doi: 10.1039/d1cc03243g. Online ahead of print.ABSTRACTModular construction of polyfunctional arenes from abundant feedstocks stands as an unremitting pursue in synthetic chemistry, accelerating the discovery of drugs and materials. Herein, using the multiple C-H activation strategy with versatile imidate esters, the expedient delivery of molecular libraries of densely functionalized sulfur-containing arenes was achieved, which enabled the concise construction of biologically active molecules, such as Bipenamol.PMID:34296709 | DOI:10.1039/d1cc03243g (Source: Chemical Communications)
Source: Chemical Communications - July 23, 2021 Category: Chemistry Authors: Wensen Ouyang Xiaoqing Cai Xiaojian Chen Jie Wang Jianhang Rao Yang Gao Yanping Huo Qian Chen Xianwei Li Source Type: research

Correction: Vinylboronic acid pinacol ester as a vinyl alcohol-precursor monomer in radical copolymerization with styrene
Chem Commun (Camb). 2021 Jul 23. doi: 10.1039/d1cc90271g. Online ahead of print.ABSTRACTCorrection for 'Vinylboronic acid pinacol ester as a vinyl alcohol-precursor monomer in radical copolymerization with styrene' by Hiroshi Makino et al., Chem. Commun., 2021, DOI: 10.1039/D1CC02603H.PMID:34296712 | DOI:10.1039/d1cc90271g (Source: Chemical Communications)
Source: Chemical Communications - July 23, 2021 Category: Chemistry Authors: Hiroshi Makino Tsuyoshi Nishikawa Makoto Ouchi Source Type: research

Crystalline coordination polymer-derived MoS < sub > 2 < /sub > quantum dot-doped carbon nanoflakes with ultrafast Li < sup > + < /sup > transfer
Chem Commun (Camb). 2021 Jul 23. doi: 10.1039/d1cc01601f. Online ahead of print.ABSTRACTIn this work, N and MoS2 quantum dot co-doped uniform 2D carbon nanoflakes are synthesized. Owing to its high quantum dot content of 54.56 wt%, the sample exhibits excellent rapid charging performance when used as an anode material in Li-ion batteries, even under a current density of 10 A g-1.PMID:34296714 | DOI:10.1039/d1cc01601f (Source: Chemical Communications)
Source: Chemical Communications - July 23, 2021 Category: Chemistry Authors: Lianshan Sun Chunli Wang Huaming Li Limin Wang Source Type: research

Pd-catalyzed selective tetrafunctionalization of diiodo- < em > o < /em > -carboranes
Chem Commun (Camb). 2021 Jul 23. doi: 10.1039/d1cc03449a. Online ahead of print.ABSTRACTA palladium-catalyzed highly selective tetrafunctionalization of 3,6-I2-o-carborane and 4,7-I2-o-carborane has been developed, leading to the preparation of 3,6-dialkenyl-4,11-R2-o-carboranes and 4,7-dialkenyl-5,11-R2-o-carboranes (R = alkyl, allyl and aryl) in moderate to excellent yields. This represents a new strategy for selective synthesis of polyfunctionalized o-carborane derivatives via a one-pot process.PMID:34296721 | DOI:10.1039/d1cc03449a (Source: Chemical Communications)
Source: Chemical Communications - July 23, 2021 Category: Chemistry Authors: Yixiu Ge Zaozao Qiu Zuowei Xie Source Type: research