Chemistry - An Asian Journal最新文献_第7页

Substituent-driven ESIPT in Chromeno-pyrroloquinoline probe for differentiating normal and cancer cells.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-23 DOI: 10.1002/asia.202401303

Savita Choudhary, Suraj Paulkar, Adarash Kumar Shukla, Ajit G Wadkar, Jayabalan Nirmal, Anupam Bhattacharya

{"title":"Substituent-driven ESIPT in Chromeno-pyrroloquinoline probe for differentiating normal and cancer cells.","authors":"Savita Choudhary, Suraj Paulkar, Adarash Kumar Shukla, Ajit G Wadkar, Jayabalan Nirmal, Anupam Bhattacharya","doi":"10.1002/asia.202401303","DOIUrl":"https://doi.org/10.1002/asia.202401303","url":null,"abstract":"Despite significant advancements in the structural flexibility and functional diversity of fluorescent molecular sensors, the chromophores often require complex synthetic processes and are typically designed to perform only a specific function. Herein, we have demonstrated the unique features of fluorophores based on a fused coumarin-indole scaffold, which are synthetically available via a one-step reaction. Four fluorophores (ICH, ICEst, ICOMe, and ICNMe2) with varying substituents were synthesized and characterized. Subsequently, their response towards aggregation, solvent polarity, and viscosity was studied. Probe ICNMe2 exhibited aggregation-induced emission (AIE), while others displayed aggregation-caused quenching. The viscosity-sensitive nature of these fluorophores was evaluated using the Froster-Hoffman equation. ICNMe2 displayed the highest sensitivity towards polarity and polarity-independent viscosity. The plausible mechanism involved is intramolecular charge transfer (ICT) in probes ICH, ICEst, and ICOMe, whereas excited state intramolecular proton transfer (ESIPT) coupled ICT in the case of ICNMe2. Based on the distinct AIE-viscosity responses and large stokes shift (~175 nm), ICNMe2 was utilized for distinguishing normal (RAW 264.7) cells and cancer (A549) cells using confocal microscopy. Results demonstrated that ICNMe2 could effectively extend its photophysical activity in the cellular milieu with an enhanced emission in channel-1 (λem = 460-530 nm) for A549 compared to RAW 264.7 cells.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401303"},"PeriodicalIF":3.5,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143031550","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

Applications of Verdazyl Radicals in Energy Storage, Molecular Electronics and Magnetism: Teaching Old Molecules New Tricks.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-22 DOI: 10.1002/asia.202401550

Margot Duggin, Alex C Bissember, Rebecca O Fuller

引用次数: 0

Catalytic Hydrogenation of CO₂ by Direct Air Capture to Valuable C1 Products Using Homogenous Catalysts. 均相催化剂直接空气捕集法催化CO2加氢制取有价C1产品。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-22 DOI: 10.1002/asia.202401327

Ritu Bhardwaj, Joyanta Choudhury

引用次数: 0

Mitigation of Polysulfide Shuttling in Lithium-Sulfur Batteries Utilizing Vanadium Pentoxide/Polypyrrole Nanocomposite Separators.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-22 DOI: 10.1002/asia.202401514

Bing Chen, Wenhu Li, Taotao Ai, Hongfeng Dong, HaiWa Bo, Qing Huang, Chaofan Li, Shouwang Kang, Yiwen Li, Teng Wang

{"title":"Mitigation of Polysulfide Shuttling in Lithium-Sulfur Batteries Utilizing Vanadium Pentoxide/Polypyrrole Nanocomposite Separators.","authors":"Bing Chen, Wenhu Li, Taotao Ai, Hongfeng Dong, HaiWa Bo, Qing Huang, Chaofan Li, Shouwang Kang, Yiwen Li, Teng Wang","doi":"10.1002/asia.202401514","DOIUrl":"10.1002/asia.202401514","url":null,"abstract":"Lithium-sulfur (Li-S) batteries are promising energy storage devices due to their high theoretical energy density and cost-effectiveness. However, the shuttle effect of polysulfides during the charging and discharging processes leads to a rapid decline in capacity, thereby restricting their application in energy storage. The separator, a crucial component of Li-S batteries, facilitates the transport of Li+ ions. However, the large pores present on the surface of the separator are insufficient to prevent the shuttling effect of polysulfides. This paper proposes a straightforward coating method to introduce a vanadium pentoxide (V2O5) /polypyrrole (PPy) functional coating on the surface of a conventional polymer separator. The unique composition of the V2O5/PPy layer plays an essential role in effectively preventing the bidirectional movement of polysulfides and the subsequent formation of inactive sulfur. Compared to those using polypyrrole separators,when equipped with a V2O5/PPy separator, the capacity retention after 100 cycles was recorded at 98 %, with a measured rate of capacity degradation at just 0.016 %, despite the sulfur content being as high as 1.84 mg cm-2. Furthermore, after 400 cycles at 1 C, the capacity retention rate reached 57.6 %. The thoughtful design of this modified separator represents an effective strategy for improving the performance of Li-S batteries.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401514"},"PeriodicalIF":3.5,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143021312","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

Heteroarene-Fused Benzo[b]arsoles: Structure, Photophysical Properties, and Effects of the Bridging Element.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-22 DOI: 10.1002/asia.202401767

Akifumi Sumida, Kensuke Naka, Hiroaki Imoto

引用次数: 0

Fabrication of Stable Ru-Doped Ni_0.95Se Nanostructures for Photovoltaic Coupled Electrochemical Water Splitting in Alkaline Medium. 稳定ru掺杂Ni0.95Se纳米结构在碱性介质中光伏耦合电化学分解水的制备。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-21 DOI: 10.1002/asia.202401667

Anakshi Boruah, Shubham Priyadarshi, Swarup Ghosh, Rajneesh Kumar, Joydeep Chowdhury, Surojit Pande

{"title":"Fabrication of Stable Ru-Doped Ni0.95Se Nanostructures for Photovoltaic Coupled Electrochemical Water Splitting in Alkaline Medium.","authors":"Anakshi Boruah, Shubham Priyadarshi, Swarup Ghosh, Rajneesh Kumar, Joydeep Chowdhury, Surojit Pande","doi":"10.1002/asia.202401667","DOIUrl":"10.1002/asia.202401667","url":null,"abstract":"Development of a competent and stable electrocatalyst coupled with photovoltaic system for the generation of green hydrogen, can be a plausible answer to the existing energy crisis. Herein, we have developed Ru doped Ni0.95Se via hydrothermal method as a bifunctional catalyst for overall water splitting coupled with photovoltaic system. The developed pristine and doped samples were thoroughly characterized by various techniques. The pristine Ni0.95Se and the optimized Ru0.1Ni0.95Se system required a potential of -0.470 and -0.318 V vs. RHE, respectively to acquire a current density of 50 mA cm-2 for HER. The rapid kinetics of the optimized Ru0.1Ni0.95Se is illustrated by the Tafel slope wherein the pristine Ni0.95Se has a Tafel slope value of 172.2 mV/dec, and the Ru0.1Ni0.95Se catalyst has 102 mV/dec. The bifunctional electrocatalyst of Ru0.1Ni0.95Se exhibits very high stability (7 days) in an alkaline medium. Density functional calculations show Ru0.1Ni0.95Se has -0.69 <math> <semantics><mrow><mi>Δ</mi> <msub><mi>E</mi> <mrow><mi>d</mi> <mi>f</mi></mrow> </msub> </mrow> <annotation>${Delta {E}_{df}}$</annotation> </semantics> </math> value indicating its remarkable stability. To improve the overall activity and stability of the electrocatalyst Ru dopant is introduced as it tunes the electronic environment by generating a synergistic effect between the metal ions and Se2- anions. This work provides an approach for the generation of green hydrogen through water electrolysis coupled with PV.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401667"},"PeriodicalIF":3.5,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997063","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

Manganese-Catalyzed Electrochemical Amination of Activated Alkenes. 锰催化活化烯烃的电化学胺化反应。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-21 DOI: 10.1002/asia.202401935

Avijit Karan, Sumit Ghosh, Alakananda Hajra

引用次数: 0

Photophysical and Chiroptical Properties of Pyrazino-Phenanthroline-Helicene Derivative and its Rhenium(I) Complex. 吡嗪-菲罗啉-螺旋烯衍生物及其铼(I)配合物的光物理和热学性质。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-21 DOI: 10.1002/asia.202401735

Debsouri Kundu, Dominika Jelonek, Natalia Del Rio, Nicolas Vanthuyne, Monika Srebro-Hooper, Jeanne Crassous

{"title":"Photophysical and Chiroptical Properties of Pyrazino-Phenanthroline-Helicene Derivative and its Rhenium(I) Complex.","authors":"Debsouri Kundu, Dominika Jelonek, Natalia Del Rio, Nicolas Vanthuyne, Monika Srebro-Hooper, Jeanne Crassous","doi":"10.1002/asia.202401735","DOIUrl":"10.1002/asia.202401735","url":null,"abstract":"A novel coordination motif comprising [4]helicene fused with pyrazino-phenanthroline (H4PP) has been synthesized and reacted with ReCl(CO)5 to yield its rhenium(I) complex (Re-H4PP). Absorption and emission spectroscopic analysis conducted in dichloromethane and 2-methyltetrahydrofuran reveals that combining pyrazino-phenanthroline with helicene visibly affects the photophysical attributes of both the resulting ligand and its Re(I) complex as compared to their non-helicene analogues, and even more importantly leads to relatively high photoluminescence quantum yield values, especially in the case of H4PP (29 %). Chiroptical studies through electronic circular dichroism and circularly polarized luminescence performed on enantiomerically enriched samples of Re-H4PP show the chiral nature of low-energy excited states affording notable glum values that amplify at cryogenic temperatures. Insights into experimental results are provided via first-principles quantum-chemical calculations showing important role of intra-ligand charge-transfer (ILCT) and metal-to-ligand CT (MLCT) states in determining photophysical features of these systems.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401735"},"PeriodicalIF":3.5,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142996656","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

Dearomatizing Photocyclization and Oxidative Aromatization: Constructing Polycyclic Arenes from Styrenes. 脱芳化、光环化和氧化芳构化：苯乙烯合成多环芳烃。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-20 DOI: 10.1002/asia.202401671

Dong Li, Tao Huang, Yuhang He, Qianyi Zhao, Lei Gong, Yu-Mei Lin

引用次数: 0

Emerging Role of Noncovalent Interactions and Disulfide Bond Formation in the Cellular Uptake of Small Molecules and Proteins. 非共价相互作用和二硫键形成在小分子和蛋白质的细胞摄取中的新作用。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-01-20 DOI: 10.1002/asia.202401734

Surendar R Jakka, Govindasamy Mugesh

{"title":"Emerging Role of Noncovalent Interactions and Disulfide Bond Formation in the Cellular Uptake of Small Molecules and Proteins.","authors":"Surendar R Jakka, Govindasamy Mugesh","doi":"10.1002/asia.202401734","DOIUrl":"10.1002/asia.202401734","url":null,"abstract":"Intracellular delivery of proteins and small molecules is an important barrier in the development of strategies to deliver functional proteins and therapeutics into the cells to realize their full potential in biotechnology, biomedicine, cell-based therapies, and gene editing protein systems. Most of the intracellular protein delivery strategies involve the conjugation of cell penetrating peptides to enable the permeability of plasma membrane of mammalian cells to allow proteins to enter cytosol. The conjugations of small molecules such as (p-methylphenyl) glycine, pyrenebutyrate and cysteines are used for the same purpose. Molecular level interactions are governed mostly by ionic (cationic/anionic), covalent and noncovalent interactions with various molecular entities of glycocalyx matrix on plasma membrane lipid bilayer. Although the role of noncovalent interactions in cellular uptake is not fully understood, several recent advances have focused on the noncovalent interaction-based strategies of intracellular delivery of small molecules and proteins into mammalian cells. These are achieved by simple modification of protein surfaces with chemical moieties which can form noncovalent interactions other than hydrogen bonding. In this review, we describe the recent advances and the mechanistic aspects of intracellular delivery and role of noncovalent interactions in the cellular uptake of proteins and small molecules.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401734"},"PeriodicalIF":3.5,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997062","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