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Special issue on "Ultrasonic and hydrodynamic intensifications of food and environmental processes: Fundamentals and applications"
Ultrason Sonochem. 2023 Sep 15:106599. doi: 10.1016/j.ultsonch.2023.106599. Online ahead of print.NO ABSTRACTPMID:37734968 | DOI:10.1016/j.ultsonch.2023.106599
Source: Ultrasonics Sonochemistry - September 21, 2023 Category: Chemistry Authors: Yang Tao Xun Sun Xiaoge Wu Pengfei Wu Ronghai He Hossein Kiani Source Type: research
Understanding the Role of Fluorine Groups in Passivating Defects for Perovskite Solar Cells
Angew Chem Int Ed Engl. 2023 Sep 21:e202313133. doi: 10.1002/anie.202313133. Online ahead of print.ABSTRACTIntroducing fluorine (F) groups into a passivator plays an important role in enhancing the defect passivation effect for the perovskite film, which is usually attributed to the direct interaction of F and defect states. However, the interaction between electronegative F and electron-rich passivation groups in the same molecule, which may influence the passivation effect, is ignored. We herein report that such interactions can vary the electron cloud distribution around the passivation groups and thus changing their co...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Xiaoqing Jiang Guangyue Yang Bingqian Zhang Linqin Wang Yanfeng Yin Fengshan Zhang Shitao Yu Shiwei Liu Hongkai Bu Zhongmin Zhou Licheng Sun Shuping Pang Xin Guo Source Type: research
Bis-peri-dinaphtho-rylenes: Facile Synthesis via Radical-Mediated Coupling Reactions and their Distinctive Electronic Structure
This study introduces a novel synthetic approach for generating 1D extended PAHs and GNRs, along with their structure-dependent electronic properties.PMID:37735099 | DOI:10.1002/anie.202311928
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Tong Shen Ya Zou Xudong Hou Haipeng Wei Longbin Ren Liuying Jiao Jishan Wu Source Type: research
Gallium Sulfide Quantum Dots with Zinc Sulfide and Alumina Shells Showing Efficient Deep Blue Emission
Angew Chem Int Ed Engl. 2023 Sep 21:e202311317. doi: 10.1002/anie.202311317. Online ahead of print.ABSTRACTSolution-processed quantum dot (QD) based blue emitters are of paramount importance in the field of optoelectronics. Despite large research efforts, examples of efficient deep blue/near UV-emitting QDs remain rare due to lack of luminescent wide bandgap materials and high defect densities in the existing ones. Here, we introduce a novel type of QDs based on heavy metal free gallium sulfide (Ga2S3) nanocrystals and their core/shell heterostructures Ga2S3/ZnS as well as Ga2S3-ZnS-Al2O3. The PL properties of core Ga2S3 Q...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Avijit Saha Ranjana Yadav Dmitry Aldakov Peter Reiss Source Type: research
Carbon-Based Electron Buffer Layer on ZnOx-Fe5C2-Fe3O4 Boosts Ethanol Synthesis from CO2 Hydrogenation
Angew Chem Int Ed Engl. 2023 Sep 21:e202311786. doi: 10.1002/anie.202311786. Online ahead of print.ABSTRACTThe conversion of CO2 into ethanol with renewable H2 has attracted tremendous attention due to its integrated functions of carbon elimination and chemical synthesis, but still being challenging. The electronic property of catalyst is essential to determine the adsorption strength and configuration of the key intermediates, therefore altering the reaction network for targeted synthesis. Here, a carbon buffer layer is employed to tailor the electronic property of the ternary ZnOx-Fe5C2-Fe3O4, in which the electron trans...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Yang Wang Wenhang Wang Ruosong He Meng Li Jinqiang Zhang Fengliang Cao Jianxin Liu Shiyuan Lin Xinhua Gao Guohui Yang Mingqing Wang Tao Xing Tao Liu Qiang Liu Han Hu Noritatsu Tsubaki Mingbo Wu Source Type: research
Photoredox Cascade Catalyst for Efficient Hydrogen Production with Biomass Photoreforming
Angew Chem Int Ed Engl. 2023 Sep 21:e202313014. doi: 10.1002/anie.202313014. Online ahead of print.ABSTRACTBiomass photoreforming is a promising method to provide both a clean energy resource in the form of hydrogen (H2) and valuable chemicals as the results of water reduction and biomass oxidation. To overcome the poor contact between heterogeneous photocatalysts and biomass substrates, we fabricated a new photoredox cascade catalyst by combining a homogeneous catalyst, 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO), and a heterogeneous dual-dye sensitized photocatalyst (DDSP) composed of two Ru(II)-polypyridine photosensit...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Atsushi Kobayashi Source Type: research
A Deeper Understanding of Metal Nucleation and Growth in Rechargeable Metal Batteries Through Theory and Experiment
Angew Chem Int Ed Engl. 2023 Sep 21:e202309247. doi: 10.1002/anie.202309247. Online ahead of print.ABSTRACTLithium and sodium metal batteries continue to occupy the forefront of battery research. Their exceptionally high energy density and nominal voltages are highly attractive for cutting-edge energy storage applications. Anode-free metal batteries are also coming into the research spotlight offering improved safety and even higher energy densities than conventional metal batteries. However, uneven metal nucleation and growth which leads to dendrites continues to limit the commercialisation of conventional and anode-free ...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Emily R Cooper Ming Li Ian Gentle Qingbing Xia Ruth Knibbe Source Type: research
Building Block-inspired Hybrid Perovskite Derivatives for Ferroelectric Channel Layers with Gate-Tunable Memory Behavior
Angew Chem Int Ed Engl. 2023 Sep 21:e202309416. doi: 10.1002/anie.202309416. Online ahead of print.ABSTRACTFerroelectric photovoltaics driven by spontaneous polarization (Ps) holds a promise for creating the next-generation optoelectronics, spintronics and non-volatile memories. However, photoactive ferroelectrics are quite scarce in single homogeneous phase, owing to the severe Ps fatigue caused by leakage current of photoexcited carriers. Here, through combining inorganic and organic components as building blocks, we constructed a series of ferroelectric semiconductors of 2D hybrid perovskites, (HA)2(MA)n-1PbnBr3n+1 (n =...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Haojie Xu Fapeng Sun Wuqian Guo Shiguo Han Yi Liu Qingshun Fan Liwei Tang Wei Liu Junhua Luo Zhihua Sun Source Type: research
In Situ Spectroscopic Detection of Large-Scale Reorientations of Transmembrane Helices During Influenza A M2 Channel Opening
Angew Chem Int Ed Engl. 2023 Sep 21:e202309069. doi: 10.1002/anie.202309069. Online ahead of print.ABSTRACTViroporins are small ion channels in membranes of enveloped viruses that play key roles during viral life cycles. To use viroporins as drug targets against viral infection requires in-depth mechanistic understanding and, with that, methods that enable investigations under in situ conditions. Here, we apply surface-enhanced infrared absorption (SEIRA) spectroscopy to Influenza A M2 reconstituted within a solid-supported membrane, to shed light on the mechanics of its viroporin function. M2 is a paradigm of pH-activated...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Ronja Rabea Paschke Swantje Mohr Sascha Lange Adam Lange Jacek Kozuch Source Type: research
Ligand Modifications Produce Two-Step Magnetic Switching in a Cobalt(dioxolene) Complex
We report that replacing one chelating pyridyl arm of tris(2-pyridylmethyl)amine (tpa) with a weaker field ortho-anisole moiety facilitates access to a third magnetic state, and examine a series of related complexes. Variable temperature crystallographic, magnetic, calorimetric, and spectroscopic studies support that this third state is consistent with l.s. CoII(sq•-). Thus, our ligand modifications not only provide access to the VT transition from l.s. CoIII(cat2-) to l.s. CoII(sq•-), but at higher temperatures, the complex undergoes spin crossover from l.s. CoII(sq•-) to h.s. CoII(sq•-), representing the first ex...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: K C Khadanand Toby Woods Lisa Olshansky Source Type: research
Solvation-Mediated Self-Assembly from Crystals to Helices of Protic Acyclic Carbene AuI-Enantiomers with Chirality Amplification
Angew Chem Int Ed Engl. 2023 Sep 21:e202311572. doi: 10.1002/anie.202311572. Online ahead of print.ABSTRACTConstructing chiral supramolecular assembly and exploring the underlying mechanism are of great significance in promoting the development of circularly polarized luminescence (CPL)-active materials. Herein, we report a solvation-mediated self-assembly from single-crystals to helical nanofibers based on the first protic acyclic (methoxy)(amino)carbenes (pAMACs) AuI-enantiomers driven by a synergetic aurophilic interactions and H-bonds. Their aggregation-dependent thermally activated delayed fluorescence properties with...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Ying-Jie Liu Yu Liu Shuang-Quan Zang Source Type: research
Nickel(II) Analogues of Phosphorescent Platinum(II) Complexes with Picosecond Excited-State Decay
Angew Chem Int Ed Engl. 2023 Sep 21:e202312851. doi: 10.1002/anie.202312851. Online ahead of print.ABSTRACTSquare-planar Ni(II) complexes are interesting as cheaper and more sustainable alternatives to Pt(II) luminophores widely used in lighting and photocatalysis. We investigated the excited-state behavior of two Ni(II) complexes, which are isostructural with two luminescent Pt(II) complexes. The initially excited singlet metal-to-ligand charge transfer (1MLCT) excited states in the Ni(II) complexes decay to metal-centered (3MC) excited states within less than 1 picosecond, followed by non-radiative relaxation of the 3MC ...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Tomohiro Ogawa Oliver S Wenger Source Type: research
Supramolecular Barrel-Rosette Ion Channel Based on 3,5-Diaminobenzoic Acid for Cation-Anion Symport
Angew Chem Int Ed Engl. 2023 Sep 21:e202313712. doi: 10.1002/anie.202313712. Online ahead of print.ABSTRACTThe structural tropology and functions of natural cation-anion symporting channels have been continuously investigated due to their crucial role in regulating various physiological functions. To understand the physiological functions of the natural symporter channels, it is vital to develop small molecule-based biomimicking systems that can provide mechanistic insights into the ion-binding sites and the ion-translocation pathways. Herein, we report a series of bis((R)-(-)-mandelic acid)-linked 3,5-diaminobenzoic acid-...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Sandip Chattopadhayay Anupam Ghosh Titas Kumar Mukhopadhyay Rashmi Sharma Ayan Datta Pinaki Talukdar Source Type: research
Disorder-Enhanced Charge-Transfer-Mediated Room-Temperature Phosphorescence in Polymer Media
Angew Chem Int Ed Engl. 2023 Sep 21:e202312627. doi: 10.1002/anie.202312627. Online ahead of print.ABSTRACTRoom-temperature phosphorescence (RTP) polymers have important applications for biological imaging, oxygen sensing, data encryption, and photodynamic therapy. Despite the many advantages polymeric materials offer such as great control over gas permeability and processing flexibility, disorder is traditionally considered as an intrinsic negative impact on the efficiency for embedded RTP luminophores, as various allowed thermal motions could quench the emitting states. However, we propose that such disorder-enabled free...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Aoyuan Cheng Hao Su Xuewen Gu Wei Zhang Baicheng Zhang Meng Zhou Jun Jiang Xuepeng Zhang Guoqing Zhang Source Type: research
Organocatalytic C-H Functionalization of Simple Alkanes
Angew Chem Int Ed Engl. 2023 Sep 20:e202310072. doi: 10.1002/anie.202310072. Online ahead of print.ABSTRACTThe direct functionalization of inert C(sp3)-H bonds to form carbon-carbon and carbon-heteroatom bonds offers vast potential for chemical synthesis and therefore receives intense attention. At present, most successes come from strategies using metal catalysts/reagents or photo/electrochemical processes. The use of organocatalysis for this purpose remains very limited or even unexplored especially when dealing with challenging C-H bonds such as those from simple alkanes. Here we disclose the first organocatalytic direc...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Fen Su Fengfei Lu Kun Tang Xiaokang Lv Zhongfu Luo Fengrui Che Hongyan Long Xingxing Wu Yonggui Robin Chi Source Type: research
