Chemistry - An Asian Journal最新文献_第5页

N, P co-Doped Hard Carbon Anodes for High-Performance Lithium-Ion Batteries with Enhanced Capacity Retention and Cycle Stability. 用于高性能锂离子电池的 N、P 共掺硬碳阳极，具有更高的容量保持率和循环稳定性。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-05 DOI: 10.1002/asia.202401071

Penglun Zheng, Jing Wu, Haihan Zhao, Junwei Li, Zhihong Liu, Yun Zheng

{"title":"N, P co-Doped Hard Carbon Anodes for High-Performance Lithium-Ion Batteries with Enhanced Capacity Retention and Cycle Stability.","authors":"Penglun Zheng, Jing Wu, Haihan Zhao, Junwei Li, Zhihong Liu, Yun Zheng","doi":"10.1002/asia.202401071","DOIUrl":"https://doi.org/10.1002/asia.202401071","url":null,"abstract":"Compared to the traditional graphite anode, heteroatom-doped polymer carbon materials have high capacity retention due to their high porosity and porous structure. Therefore, they have great potential for application in lithium-ion battery (LIB) anodes. In this work, an N, P co-doped precursor polymer material (MBPp), synthesized via a one-pot method using bisphenol-A (C-source), melamine (N-source), and 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (P-source). The resulting N, P-co-doped hard carbon materials (MBPs) were prepared at various pyrolysis temperatures, yielding microporous, mesoporous, and macroporous structures. MBP materials demonstrated excellent electrochemical performance as LIB anodes. Notably, MBP-900 achieved a reversible capacity of 262 mAh g-1 at 1000 mA g-1 (in 0.005-2.0 V voltage range) with a capacity retention rate of 97.2% after 1000 cycles. These findings highlight the significance of MBP materials, which possess numerous defects, large layer gaps, and excellent cycle stability, in advancing the development of polymer anode materials for LIBs.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401071"},"PeriodicalIF":3.5,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142574935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Blazing Carbon Dots: Unfolding its Luminescence Mechanism to Photoinduced Biomedical Applications. 炽热碳点：揭示其发光机制，实现光诱导生物医学应用。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-05 DOI: 10.1002/asia.202401098

Nirmiti Mate, Vinita Satwani, Pranav Kumar, Shaikh M Mobin

{"title":"Blazing Carbon Dots: Unfolding its Luminescence Mechanism to Photoinduced Biomedical Applications.","authors":"Nirmiti Mate, Vinita Satwani, Pranav Kumar, Shaikh M Mobin","doi":"10.1002/asia.202401098","DOIUrl":"https://doi.org/10.1002/asia.202401098","url":null,"abstract":"Carbon dots (CDs) are carbon-based nanomaterials that have garnered immense interest due to their exceptional photophysical and optoelectronic properties. They have been employed extensively for biomedical imaging and phototherapy due to their superb water dispersibility, low toxicity, outstanding biocompatibility, and exceptional tissue permeability. This review summarizes the luminescence mechanism of CDs. The modification in CDs via various doping routes is comprehensively reviewed, and the effect of such alterations on their photophysical properties, such as photoluminescence (PL), absorbance, and reactive oxygen species generation ability, is also highlighted. This review also aims to summarize the role of CDs in cellular imaging and fluorescence lifetime imaging for cellular metabolism. Subsequently, recent advancements and the future prospects of CDs as nanotheranostic agents have been discussed. Herein, we have discussed the role of CDs in photothermal, photodynamic, and synergistic therapy of anticancer, antiviral, and antibacterial applications. The overall summary of the review highlights the future prospects of CD-based research in bioimaging and biomedicine.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401098"},"PeriodicalIF":3.5,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142580923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cover Feature: Electrochemical Charge Transfer Kinetics of Ferrocene in the Light of Different Working Electrodes (Chem. Asian J. 21/2024) 封面专题：不同工作电极下二茂铁的电荷转移动力学（《亚洲化学杂志》21/2024）

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-05 DOI: 10.1002/asia.202482102

Rajwinder Kaur, Abhik Ghoshal, Prachi Galav, Prakash Chandra Mondal

引用次数: 0

Tunable Circularly Polarized Luminescence Enabled by Photo-Induced Phase Transition in a Blue-Phase Liquid Crystal with a Wide Room-Temperature Window. 具有宽室温窗口的蓝相液晶中的光诱导相变所产生的可调圆偏振发光。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-05 DOI: 10.1002/asia.202401211

Wenxin Kang, Xianyu Meng, Tianqi Ren, Jinbao Guo

{"title":"Tunable Circularly Polarized Luminescence Enabled by Photo-Induced Phase Transition in a Blue-Phase Liquid Crystal with a Wide Room-Temperature Window.","authors":"Wenxin Kang, Xianyu Meng, Tianqi Ren, Jinbao Guo","doi":"10.1002/asia.202401211","DOIUrl":"https://doi.org/10.1002/asia.202401211","url":null,"abstract":"Chiral luminescent liquid crystal (LC) materials with switchable circularly polarized luminescence (CPL) signals have received extensive attention, in which the use of light stimulation to achieve different CPL states is of great significance. However, there are very few reports on the generation and regulation of CPL signals enabled by blue phase LC (BPLC). Herein, achieving CPL signal inversion based on the phase transition induced by light/temperature stimulation in a BPLC system with a wide room-temperature window is reported. A binaphthalene azo-based chiral photoswitch (S)-switch 3 with high helical twisted power (HTP) and large HTP variation is synthesized, and a BP system with a wide room temperature range is further fabricated by doping (S)-switch 3 and a fluorescence molecule into a bulk LC. By regulating the doping amount of (S)-switch 3, a phase transition from BP to cholesteric (Ch) phase at room temperature is observed upon 365 nm UV light irradiation or during cooling process, and the polarization inversion of CPL signal is correspondingly found due to the different CPL generation mechanisms of BPLC and CLC. This study provides a new strategy for the flexible regulation of CPL signals in a BPLC system.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401211"},"PeriodicalIF":3.5,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142580965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimized Carbon Coupling for Enhanced Ethylene Production via a Unique Single-Atom-Substrate Synergy Mechanism within Photocatalytic Processes. 通过光催化过程中独特的单原子-底物协同机制优化碳耦合以提高乙烯生产。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-05 DOI: 10.1002/asia.202401183

Hongbin Xing, Tingting Xu, Xin Meng, Qiang Ju, Hailing Huo, Ting Hu, Chengxi Huang, Panpan Li, Erjun Kan, Ang Li

引用次数: 0

Magnetic Anisotropic Effects in Charged Aza[10]annulene Analogs with a Non-planar Carbon Framework. 具有非平面碳框架的带电氮杂[10]蒽类似物的磁各向异性效应。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-05 DOI: 10.1002/asia.202401309

Jais Kurian, P E Swathi Krishna, Ishika Agrawal, Nagarajan Jayabal, Mahesh Hariharan, Muraleedharan Kannoth Manheri

{"title":"Magnetic Anisotropic Effects in Charged Aza[10]annulene Analogs with a Non-planar Carbon Framework.","authors":"Jais Kurian, P E Swathi Krishna, Ishika Agrawal, Nagarajan Jayabal, Mahesh Hariharan, Muraleedharan Kannoth Manheri","doi":"10.1002/asia.202401309","DOIUrl":"https://doi.org/10.1002/asia.202401309","url":null,"abstract":"Classically, aromaticity portrays the unique stability and peculiar reactivities of cyclic planar conjugated systems with (4n+2) π electrons. Understanding the electronic environments in new chemical frameworks through experimental and theoretical validation is central to this ever-expanding theme in chemical science. Such investigations in curved π-surfaces have special significance as they can unravel the variations when the planarity requirement is slightly lifted. In this report, we discuss the synthesis, spectroscopic and theoretical studies involving a new group of cyclazine analogs having a charged aza[10]annulene periphery, centrally locked through a sp3 carbon. Magnetic anisotropic effects arising from electron delocalization through its curved π-surface were mapped through a specific set of chemical groups introduced through this sp3 carbon. The nucleus-independent chemical shift calculations revealed negative chemical shift values, indicating the aromatic nature of the aza[10] annulene rim. This is corroborated by a clockwise diatropic ring current, evident from anisotropy-induced current density analysis. Variations in the chemical shift of NMR signals in these systems were also computationally examined through isotropic chemical shielding surface analysis.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401309"},"PeriodicalIF":3.5,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142580925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Computational Mechanistic Study on Copper Autoreduction in Cu-CHA Zeolite Catalysts. Cu-CHA 沸石催化剂中的铜自还原计算机理研究

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-05 DOI: 10.1002/asia.202400973

Miao Wen, Zhuyang Liu, Chong Liu, Wei Zhuang

{"title":"A Computational Mechanistic Study on Copper Autoreduction in Cu-CHA Zeolite Catalysts.","authors":"Miao Wen, Zhuyang Liu, Chong Liu, Wei Zhuang","doi":"10.1002/asia.202400973","DOIUrl":"10.1002/asia.202400973","url":null,"abstract":"The activation of Cu-zeolite catalysts is accompanied by an autoreduction reaction, in which a part of Cu(II) species is spontaneously reduced to Cu(I) species. The stoichiometry of autoreduction in which the release of one O2 is accompanied by the reduction of four Cu(II) to Cu(I) has been proposed, but the detailed mechanism of this autoreduction remains unclear. In this work, we used DFT calculations to study the autoreduction mechanism in Cu-CHA zeolites. The two reduction mechanisms of [CuOH]+ to Cu+ in CHA-type zeolite were systematically studied. In Mechanism I, two [CuOH]+ react via dehydration to form [Cu-O-Cu]2+, and the further reaction of two [Cu-O-Cu]2+ to produce O2 is the most critical step, which requires four charge-compensating framework Al in close proximity. In Mechanism II, the production of O2 occurs via [CuO]+ intermediates, and the generation of possible [CuO]+ is the most critical step. The exploration of autoreduction reactions in a variety of Cu-CHA models with different Al sittings shows that the O-O distances between two intermediate precursors, i. e., two [Cu-O-Cu]2+ in Mechanism I, or two [CuO]+ in Mechanism II, are key factors determining the activation barriers of O2 production during autoreduction.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202400973"},"PeriodicalIF":3.5,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142574934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PIDA as an Iodinating Reagent: Visible-Light-Induced Iodination of Pyrazolo[1,5-a]pyrimidines and Other Heteroarenes. 作为碘化试剂的 PIDA：可见光诱导吡唑并[1,5-a]嘧啶及其他杂环戊烯的碘化反应。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-04 DOI: 10.1002/asia.202401101

Suvam Paul, Sourav Das, Tathagata Choudhuri, Papiya Sikdar, Avik Kumar Bagdi

引用次数: 0

Absorption, Fluorescence, and Two-Photon Excitation Ability of 5-o-Tolyl-11 (or 13)-o-tolylisoindolo[2,1-a]quinolines Prepared by Ring-Closing Metathesis and [2+3] Cycloaddition. 通过闭环 Metathesis 和 [2+3] Cycloaddition 法制备的 5-o-Tolyl-11 (or 13)-o-tolylisoindolo[2,1-a]quinolines 的吸收、荧光和双光子激发能力。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-04 DOI: 10.1002/asia.202401073

Yuki Wada, Kwangkyun Jang, Hirokazu Ishii, Yuki Watakabe, Motosuke Tsutsumi, Makoto Sako, Tsunayoshi Takehara, Takeyuki Suzuki, Hirofumi Tsujino, Yasuo Tsutsumi, Tomomi Nemoto, Mitsuhiro Arisawa

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Cu-UiO-66 Catalyzed Synthesis of Imines via Acceptorless Dehydrogenative Coupling of Alcohols and Amines. Cu-UiO-66 催化通过醇和胺的无受体脱氢偶联合成胺。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-04 DOI: 10.1002/asia.202400984

Yujuan Wu, Qiulin Zhu, Hongyang Xu, Jiawei Yang, Yongfei Wang, Cuiping Wang, Zhizhi Hu, Zhiqiang Zhang

引用次数: 0