Chemistry - An Asian Journal最新文献_第2页

Modulation for Redox States of Single-Walled Carbon Nanotubes: Effect of Wrapping Conjugated Polymers. 单壁碳纳米管氧化还原状态的调制：包裹共轭聚合物的影响。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-14 DOI: 10.1002/asia.202400879

Siyuan Wu, Haibiao Zhu, Liu Hong, Naotoshi Nakashima, Cheng Yang

引用次数: 0

Regio- and Chemo-selective C-H Arylation of 3-Bromothiophene: A Synthesis Shortcut to Versatile π-Conjugated Building Blocks for Optoelectronic Materials. 3-Bromothiophene 的 Regio- 和 Chemo-selective C-H Arylation: A Synhesis Shortcut to Versatile π-Conjugated Building Blocks for Optoelectron Materials.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-14 DOI: 10.1002/asia.202401116

Min-Ling Cao, Kun-Mu Lee, Xiao-Wei Wu, Wei-Lun Yu, Ching-Yuan Liu

引用次数: 0

Amino Acid-Assisted Synthesis of Zeolites with Improved Catalytic Properties. 氨基酸辅助合成具有更好催化性能的沸石。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-13 DOI: 10.1002/asia.202401241

Hongbin Du, Li Hao

{"title":"Amino Acid-Assisted Synthesis of Zeolites with Improved Catalytic Properties.","authors":"Hongbin Du, Li Hao","doi":"10.1002/asia.202401241","DOIUrl":"https://doi.org/10.1002/asia.202401241","url":null,"abstract":"Conventional zeolites are limited in their ability to catalyze macromolecular reactions due to micropore constraints, resulting in sluggish reactant and product diffusion and subsequently pore clogging and catalyst deactivation. Consequently, the pore and textural refinement of zeolites to meet industrial demands has become a research hotspot. Herein, we review the amino acid-assisted methods in zeolite synthesis and scrutinize the principle and influential factors governing amino acid involvement in zeolite synthesis. Additionally, we analyze the advantages and challenges associated with the amino acid-assisted method. Certain amino acids can interact with zeolite precursors or crystal surface, thus altering the crystal growth rate and enabling precise control over the crystal size and shape. On the other hand, amino acids can serve as structure-directing agents to orchestrate the generation of mesoporous pores. These capabilities enable the production of zeolites with well-defined pores, particle sizes and/or crystal shapes that satisfy catalytic requirements. Moreover, the unique properties of amino acids allow their complete elimination from the solid product through a simple aqueous washing process, facilitating their recovery for subsequent usage. As result, the amino acid-assisted synthesis methods offer a convenient, green route to zeolites with modulated textual properties for high-performance catalysis.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401241"},"PeriodicalIF":3.5,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613328","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

Utilization of Tin(IV) Complex of N-confused Porphyrin for Antiproliferative Activity and Antimicrobial Photodynamic Chemotherapy. 利用 N-混淆卟啉的锡（IV）络合物进行抗增殖活性和抗菌光动力化疗。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-13 DOI: 10.1002/asia.202401027

Rajesh Kumar, Pankaj Kumar Chaudhary, Ramasare Prasad, Muniappan Sankar

{"title":"Utilization of Tin(IV) Complex of N-confused Porphyrin for Antiproliferative Activity and Antimicrobial Photodynamic Chemotherapy.","authors":"Rajesh Kumar, Pankaj Kumar Chaudhary, Ramasare Prasad, Muniappan Sankar","doi":"10.1002/asia.202401027","DOIUrl":"https://doi.org/10.1002/asia.202401027","url":null,"abstract":"Sn(IV) complex of N-Confused Porphyrin (Sn(IV)-NCP) has been prepared and characterized by several spectroscopic techniques to verify its structure and purity. Sn(IV)-NCP shows a red shift in both the Soret and Q bands compared to the free base NCTPP. The last Q band appears in the NIR region. Based on these characteristics, we investigated the antiproliferative properties and antimicrobial photodynamic therapy (a-PDT) efficiency of Sn(IV)-NCP against the bacteria Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). Further, we investigated the photodynamic activity of Sn (IV)-NCP against Michigan cancer foundation-7 (MCF-7) cancer cells, to assess its potential as an effective therapeutic agent. Treated MCF-7 cells with the compound show cytotoxic effects as compared to the untreated ones. At a higher concentration (128 µg/ml), Sn(IV)-NCP exhibited 90% inhibition, while at a lower concentration (32 µg/ml), it showed 70% inhibition in MCF-7 cells. The IC50 value for this compound against MCF-7 cells was found 16.67 µg/ml. At 32 µg/ml, Sn(IV)-NCP showed only around 4% cell inhibition, indicating minimal cytotoxic effects on human embryonic kidney cells (HEK293).","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401027"},"PeriodicalIF":3.5,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613358","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

Homobimetallic Ruthenium(II) Complexes Catalysed Selective Transfer Hydrogenation of Aldehydes in Water. 同位金属钌（II）配合物催化水中醛的选择性转移加氢反应。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-12 DOI: 10.1002/asia.202401162

Ramaswamy Murugavel, Gopal Deshmukh, Thakur Rochak Kumar Rana, Gopalan Rajaraman

{"title":"Homobimetallic Ruthenium(II) Complexes Catalysed Selective Transfer Hydrogenation of Aldehydes in Water.","authors":"Ramaswamy Murugavel, Gopal Deshmukh, Thakur Rochak Kumar Rana, Gopalan Rajaraman","doi":"10.1002/asia.202401162","DOIUrl":"https://doi.org/10.1002/asia.202401162","url":null,"abstract":"Herein we report chemoselective transfer hydrogenation (TH) of aldehydes in aqueous medium using a series of homobimetallic Ru(II) catalysts. Two homobimetallic complexes (Ru1 and Ru3) and one monometallic complex (Ru2) have been employed in the catalytic reduction of aldehydes. Bimetallic complex [(p-cymene)2(RuCl)2L3] (Ru3) is obtained from the reaction of Schiff base ligand 2,2'-((1E,1'E)-((3,3',5,5'-tetraisopropyl-[1,1'-biphenyl]-4,4'diyl)bis(azaneylylidene))bis(methaneylylidene))bis(4-bromophenol) (H2L3) and characterized by various spectroscopic and analytical techniques. The use of formic acid/formate buffer as the hydride source and a catalyst loading of 0.01 mol% of Ru1 or Ru3 resulted in the conversion of various aldehydes to the corresponding alcohols in good to excellent yield. This method is very efficient for selective reduction of aldehydes in the presence of other reducible functional groups. A loading of 0.0001 mol% of Ru1 catalyst is sufficient to achieve a turnover frequency (TOF) of 5.5× 105 h-1. Furthermore, the catalyst can been recycled and reused for six consecutives cycles without sacrificing the efficiency. A comparison of results obtained between bimetallic and monometallic complexes offers valuable insights into the distinct reactivity patterns of the bimetallic complexes, presumably originating from a cooperative effect. We have explored the mechanistic pathway using DFT methods.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401162"},"PeriodicalIF":3.5,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613312","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

Self-Generated Ions Modify the Pair Interaction and the Phase Separation of Chemically Active Colloids. 自生离子改变了化学活性胶体的配对相互作用和相分离。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-12 DOI: 10.1002/asia.202400923

Yixin Peng, Mohd Yasir Khan, Yongxiang Gao, Wei Wang

{"title":"Self-Generated Ions Modify the Pair Interaction and the Phase Separation of Chemically Active Colloids.","authors":"Yixin Peng, Mohd Yasir Khan, Yongxiang Gao, Wei Wang","doi":"10.1002/asia.202400923","DOIUrl":"https://doi.org/10.1002/asia.202400923","url":null,"abstract":"Chemically active colloids that release/consume ions are an important class of active matter, and exhibit interesting collective behaviors such as phase separation, swarming, and waves. Key to these behaviors is the pair-wise interactions mediated by the concentration gradient of self-generated ions. This interaction is often simplified as a pair-wise force decaying at 1/r2, where r is the interparticle distance. Here, we show that this simplification fails for isotropic and immotile active colloids with net ion production, such as Ag colloids in H2O2. Specifically, the production of ions on the surface of the Ag colloids increases the local ion concentration, c, and attenuates the pair-wise interaction force that scales with ∇c/c. As a result, the attractive force between an Ag colloid and its neighbor (active or passive) decays at 1/r or 1/r2 for small or large r, respectively. In a population, the attraction of a colloid by a growing cluster also scales with ∇c/c, so that medium-sized clusters grow fastest, and that the cluster coarsening slows with time. These results, supported by finite element and Brownian dynamic simulations, highlight the important role of self-generated ions in shaping the collective behavior of chemically active colloids.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202400923"},"PeriodicalIF":3.5,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613357","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

Electrochemical Decarboxylative Trifluoromethylation of Cinnamic Acids Revisited: A Combined Experimental and Computational Study. 肉桂酸的电化学脱羧三氟甲基化再研究：实验与计算相结合的研究。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-10 DOI: 10.1002/asia.202400967

Yoshihiko Yamamoto, Natsuki Goto, Takeshi Yasui, Hirotaka Uchida

引用次数: 0

Organocatalytic Asymmetric Synthesis of C-N Atropisomers with Pyrrole, Oxindole and Succinimide Scaffold. 用吡咯、吲哚和丁二酰亚胺支架有机催化不对称合成 C-N 异构体。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-10 DOI: 10.1002/asia.202401132

Subhankar Biswas, Subham Kundu, Subhas Chandra Pan

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A Copper-Incorporated meso-(N'-acetyl-hydrizide)-BODIPY as a "Off-On" Fluorescent Probe for Histidine. 铜掺杂介-(N'-乙酰基-三嗪)-BODIPY 作为组氨酸的 "关-开 "荧光探针。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-09 DOI: 10.1002/asia.202401182

Siyoung Cho, Pooja Sharma, Rizki Rachmad Saputra, Youngmi Kim

{"title":"A Copper-Incorporated meso-(N'-acetyl-hydrizide)-BODIPY as a \"Off-On\" Fluorescent Probe for Histidine.","authors":"Siyoung Cho, Pooja Sharma, Rizki Rachmad Saputra, Youngmi Kim","doi":"10.1002/asia.202401182","DOIUrl":"https://doi.org/10.1002/asia.202401182","url":null,"abstract":"We present a highly sensitive and selective fluorescence \"turn-on\" sensor for L-histidine (His) detection in aqueous solutions utilizing a 1-Cu2+ complex. This sensing platform employs a fluorescence-based ligand displacement approach, featuring a meso-(N'-acetyl-hydrizide)-based BODIPY derivative (1) complexed with Cu2+. Initially highly fluorescent, the emission of 1 is selectively quenched by Cu2+ ions, forming the 1-Cu2+ complex. The high affinity between His and Cu2+ effectively displaces 1 from the complex, restoring fluorescence. The system exhibits rapid response (within 5 minutes), excellent sensitivity (detection limit of 78 nM), operational simplicity, and a large fluorescence \"turn-on\" signal. It demonstrates remarkable selectivity for His over other amino acids, with maleimide masking cysteine interference. Notably stable in complex biological matrices, the sensor has successfully quantified His in artificial urine samples. Its practical applicability extends to paper-based test strips, offering portability and potential for real-time His monitoring in clinical diagnostics and biological systems.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401182"},"PeriodicalIF":3.5,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613327","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

Development of Cyclometalated Iridium(III) Complexes of 2-Phenylbenzimidazole and Bipyridine Ligands for Selective Elimination of Gram-Positive Bacteria. 开发 2-苯基苯并咪唑和联吡啶配体的环甲基化铱（III）配合物，用于选择性消除革兰氏阳性细菌。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-11-09 DOI: 10.1002/asia.202401060

Aryan Gautam, Ajay Gupta, Puja Prasad, Pijus K Sasmal

{"title":"Development of Cyclometalated Iridium(III) Complexes of 2-Phenylbenzimidazole and Bipyridine Ligands for Selective Elimination of Gram-Positive Bacteria.","authors":"Aryan Gautam, Ajay Gupta, Puja Prasad, Pijus K Sasmal","doi":"10.1002/asia.202401060","DOIUrl":"https://doi.org/10.1002/asia.202401060","url":null,"abstract":"Herein, we have reported a series of cationic aggregation-induced emission (AIE) active iridium(III) complexes (Ir1-Ir5) of the type [Ir(C^N)2(N^N)]Cl, wherein C^N is a cyclometalating 2-phenylbenzimidazole ligand with varying alkyl chain lengths and N^N is a 2,2'-bipyridine ligand attached to bis-polyethylene glycol chains, for the treatment of bacterial infections. The AIE phenomenon of the complexes leveraged for detecting bacteria by fluorescence microscopy imaging that displayed a strong red emission in Gram-positive bacteria. The antibacterial activity of the complexes assessed against Gram-positive methicillin-sensitive S. aureus, methicillin-resistant S. aureus, E.faecium and E.faecalis and Gram-negative E. coli and P.aeruginosa bacteria of clinical interest. The complexes Ir2-Ir4 exerted potent antibacterial activity towards Gram-positive strains with low minimum inhibitory concentrations (MICs) values in the range of 1-9 μM, which is comparable to clinically approved antibiotic vancomycin. In contrast, these complexes were found to be inactive towards Gram-negative bacterial strains (MICs > 100 µM). The mechanism of antibacterial activity of the complexes implies that ROS generation, membrane depolarization and rupture are responsible for bacterial cell death. Further, the complexes Ir1-Ir3 were found to be low-toxic against human red blood cells and human embryonic kidney (HEK293) cells, indicating their potential for use as antibacterial agents.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401060"},"PeriodicalIF":3.5,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613339","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