Chemistry - An Asian Journal最新文献_第2页

ER-Specific Localization and Stress Detection With Phenothiazine Nucleoside Fluorescent Probes. 吩噻嗪核苷荧光探针内质网特异性定位及应激检测。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-24 DOI: 10.1002/asia.202500433

Gayatri Bhattad, Rajesh Sahu, Mohini Ghorpade, Yogesh S Sanghvi, Anant R Kapdi, Sriram Kanvah

引用次数: 0

A Pseudo Hydronium Solvate Ionic Liquid and Taxonomy of the Allied Protic Media. 一种伪水合氢溶剂离子液体及其相关质子介质的分类。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-24 DOI: 10.1002/asia.202500146

Atsushi Kitada, Kio Kawata, Kazuhiro Fukami, Kuniaki Murase

{"title":"A Pseudo Hydronium Solvate Ionic Liquid and Taxonomy of the Allied Protic Media.","authors":"Atsushi Kitada, Kio Kawata, Kazuhiro Fukami, Kuniaki Murase","doi":"10.1002/asia.202500146","DOIUrl":"https://doi.org/10.1002/asia.202500146","url":null,"abstract":"A ternary equimolar mixture of water, 18-crown-6-ether (18C6), and (+)-10-camphorsulfonic acid (CSA), [H2O]/[18C6]/[CSA] = 1/1/1 by mole, has been prepared and characterized as a \"pseudo hydronium solvate ionic liquid (IL).\" In this system, 18C6-coordinated water is only partially protonated by CSA, resulting in a coexistence of 18C6-solvated hydronium (H3O+) ions and neutral [H2O·18C6] complexes. Unlike previously reported protic media formed with superacids, which undergo complete proton transfer to form solvate ILs, this system retains a significant fraction of neutral species due to the moderate ΔpKa between CSA and water. Spectroscopic measurements including diffusion coefficient assessments reveal that proton transport proceeds via a Grotthuss-like mechanism involving neutral complexes, distinguishing this medium from both vehicle-type and fast-proton-diffusive solvate ILs. Analysis using dimensionless parameters-self-diffusion coefficient and molar conductivity ratios-offers a quantitative framework for profiling ionicity and transport behavior in such systems. These findings provide fundamental insights into proton conduction mechanisms in pseudo-ionic environments and establish a rational basis for designing new proton-conducting materials. The chiral nature of the CSA- anion further expands the potential of this system for applications in asymmetric catalysis, electrochemical sensing, and photoelectrochemical energy conversion devices.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00146"},"PeriodicalIF":3.5,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144473549","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

Perovskite-Like Metal-Organic Framework of Cobalt Formate as High-Performance Electrocatalyst for Dye-Sensitized Solar Cells: From Microcube to Nanotube. 钙钛矿类金属-有机框架甲酸钴作为染料敏化太阳能电池的高性能电催化剂：从微立方到纳米管。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-24 DOI: 10.1002/asia.202401358

Yu-Chien Lee, Chun-Ting Li

{"title":"Perovskite-Like Metal-Organic Framework of Cobalt Formate as High-Performance Electrocatalyst for Dye-Sensitized Solar Cells: From Microcube to Nanotube.","authors":"Yu-Chien Lee, Chun-Ting Li","doi":"10.1002/asia.202401358","DOIUrl":"https://doi.org/10.1002/asia.202401358","url":null,"abstract":"Perovskite-like metal-organic framework of cobalt formate, that is, [(CH3)2NH2][Co(HCOO)3]n (denoted as Co(HCOO)3), has successfully grown on a conductive carbon cloth (CC) with or without surfactant. The insertion of various thiolate surfactants, for example, 2-mercaptobenzoxazole (MBO), 2-mercaptobenzimidazole (MBI), and 2-mercaptobenzothiazole (MBT), effectively confined the particle size to microcubes owing to the core@shell structure of H2O@dimethylformamide (DMF) reverse micelles. The insertion of benzeneselenolate (PhSe-) caused the formation of both microcubes and nanotubes. When some H2O@DMF reverse micelles were intensively surrounded by benzeneselenious anions (R-SeO3 - or R-SeO2 -), the strong π-π stacking among benzenes would induce the crystal growth through 1D direction, leading to the formation of Co(HCOO)3 nanotubes uniformly covered on CC. Among all the CC/Co(HCOO)3 electrodes, the CC/PhSe-doped Co(HCOO)3 electrodes reached the optimal electrocatalytic performance toward triiodide reduction, and thereby functioned as the outstanding counter electrode in dye-sensitized solar cell (DSSC). Good DSSCs' efficiencies of 9.73% (1 sun) and 24% (at 6 klux) can be obtained by using CC/PhSe-doped Co(HCOO)3, which surpassed the cells with CC/bare Co(HCOO)3 (5.25% at 1 sun) and the benchmark CC/Pt (9.85% at 1 sun), owing to numerous electro-donating R-SeO3 -/R-SeO2 - dopants as active sites and facile 1D charge-transfer pathways.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e01358"},"PeriodicalIF":3.5,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144473459","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

Electronic Structure, Covalency, and Magnetic Anisotropy in [AnCp3] (where An = Th-Cf) Complexes: Insights from First Principle Calculations. [AnCp3]（其中An = Th-Cf）配合物的电子结构、共价和磁各向异性：来自第一性原理计算的见解。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-24 DOI: 10.1002/asia.202500278

Ibtesham Tarannum, Prem Prakash Sahu, Shruti Moorthy, Shivam Gupta, Saurabh Kumar Singh

{"title":"Electronic Structure, Covalency, and Magnetic Anisotropy in [AnCp3] (where An = Th-Cf) Complexes: Insights from First Principle Calculations.","authors":"Ibtesham Tarannum, Prem Prakash Sahu, Shruti Moorthy, Shivam Gupta, Saurabh Kumar Singh","doi":"10.1002/asia.202500278","DOIUrl":"https://doi.org/10.1002/asia.202500278","url":null,"abstract":"Understanding the nature of actinide-ligand bonding, covalency, and magnetic properties is a burgeoning research topic in the field of actinide chemistry. In the present manuscript, we have thoroughly investigated the electronic structure, magnetic anisotropy of nine [AnCp3] complexes (An = Th(III)-Cf(III)) using scalar relativistic density functional theory (SR-DFT) and complete active space self-consistent field (CASSCF) method to shed light on the nature of actinide-ligand covalency, with particular emphasis on the role of 5f versus 6d covalency in the bonding. DFT and CASSCF calculations predict 6d1(Th), 5f16d1 (Pa), and 5fn configurations for U-Cf analogues. A range of computational methods, including molecular orbital (MO), natural population analysis (NPA), natural localized molecular orbital analysis (NLMO) analysis, and ab initio ligand field theory (AILFT) were used to elucidate the orbital-driven and energy-driven component in describing the 5f-ligand covalency in [AnCp3] complexes. DFT calculations highlight dominant 6d-covalency for earlier actinides, while dominant 5f-covalency in heavier actinides and, importantly, underscores the emergence of energy-driven covalency in delineating trends in the 5f-ligand covalency in [AnCp3] complexes. CASSCF calculations with ligand orbitals in active space nicely reproduce the experimental g-shifts and magnetic susceptibility, thereby highlighting the importance of 5f-ligand covalency in describing the magnetic properties of [AnCp3] complexes.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00278"},"PeriodicalIF":3.5,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144473456","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

Thiazole-Flanked Para-Azaquinodimethane-Based Organic Polymer Semiconductors: Synthesis and Optoelectronic Properties. 噻唑双侧对氮杂基有机聚合物半导体：合成与光电性能。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-23 DOI: 10.1002/asia.202500215

Jasmine P Jacob, Bharath Dyaga, Mahtab Miralaei, Sasikumar Mayarambakam, Olivier Boyron, Paul W M Blom, Wojciech Pisula, Bruno Schmaltz

{"title":"Thiazole-Flanked Para-Azaquinodimethane-Based Organic Polymer Semiconductors: Synthesis and Optoelectronic Properties.","authors":"Jasmine P Jacob, Bharath Dyaga, Mahtab Miralaei, Sasikumar Mayarambakam, Olivier Boyron, Paul W M Blom, Wojciech Pisula, Bruno Schmaltz","doi":"10.1002/asia.202500215","DOIUrl":"https://doi.org/10.1002/asia.202500215","url":null,"abstract":"Modifying the polymer backbone through N⋯S non-covalent interactions is an effective approach to enhance the properties of organic semiconducting polymers. Following this strategy, we designed and synthesized two new quinoidal polymers based on asymmetric and symmetric thiazole-flanked para-azaquinodimethane (p-AQM), named PAQM-TTTz and PAQM-TzTTz. To assess the impact of the thiazole unit, we also synthesized a reference polymer, PAQM-TTT, and compared its optoelectronic, thermal, and polymer backbone planarity properties with those of PAQM-TTTz and PAQM-TzTTz. Both PAQM-TTTz and PAQM-TzTTz exhibited dual-band absorption in solution, indicating pre-aggregation due to enhanced intermolecular interactions. Both polymers exhibited a low band gap. Density functional theory (DFT) studies revealed that while the thiazole unit does not alter the bond lengths of adjacent thiophenes, but it reduces torsional disorder by forming N⋯S non-covalent interactions with adjacent thiophenes in PAQM-TTTz and PAQM-TzTTz. However, due to the reduced electron richness of the conjugated backbone, a lower charge carrier mobility was observed in field-effect transistors for PAQM-TTTz and PAQM-TzTTz in comparison to PAQM-TTT. Our results highlighted the interest of non-covalent interactions in quinoidal polymers and present an alternative design strategy to control the properties of p-AQM-based quinoidal semiconducting polymers.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00215"},"PeriodicalIF":3.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144473462","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

Elucidation of Organohalogenochromism (OHC) of D-A Pyridinium and D-π-A Pyridinium Dyes: Effect of Halogen Bond. D- a吡啶和D-π-A吡啶染料有机荧光性的研究：卤素键的影响。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-23 DOI: 10.1002/asia.202500746

Kumpei Kozuka, Keiichi Imato, Yousuke Ooyama

{"title":"Elucidation of Organohalogenochromism (OHC) of D-A Pyridinium and D-π-A Pyridinium Dyes: Effect of Halogen Bond.","authors":"Kumpei Kozuka, Keiichi Imato, Yousuke Ooyama","doi":"10.1002/asia.202500746","DOIUrl":"https://doi.org/10.1002/asia.202500746","url":null,"abstract":"Bathochromic shift-type OHC (b-OHC) was found in donor-acceptor (D-A) type pyridinium dye bearing halide ion as a counter anion, as well as donor-π-acceptor (D-π-A) type pyridinium dye; the intramolecular charge transfer-based photoabsorption maxima (λmax abs) in halogenated solvents show a large bathochromic shift, in comparison with those in non-halogenated solvents. It was revealed that there is a good relationship between the most positive surface electrostatic potential (VS,max) values associated with the most positive σ-hole on halogen atoms in organohalogen molecule and the λmax abs, indicating that the b-OHC of the D-A and D-π-A pyridinium dyes is attributed to the formation of halogen bond (XB) or complex such as [R─X·Y]- between the halogen atom (X) of organohalogen molecule and the counter anion (Y) of dye molecule. Moreover, the plots of the λmax abs against the VS,max values demonstrated that the b-OHC characteristic of D-A pyridinium dye is lower than that of the D-π-A pyridinium dye. It was suggested that the formation of XB induces a decrease in the ring current of the pyridinium ring, that the LUMO is mainly localized, resulting in the expression of b-OHC. Consequently, this work offers a deeper insight into the mechanism for the expression and the origin of OHC.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00746"},"PeriodicalIF":3.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144473457","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

Copper(II)-Catalyzed Regioselective Cascade Reaction of β,γ-Alkynyl-α-Imino Esters with α-Amino Acid-Derived Esters. 铜（II）催化β，γ-炔基-α-亚胺酯与α-氨基酸衍生酯的区域选择性级联反应

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-23 DOI: 10.1002/asia.202500690

Guilong Wang, Feiyang Chen, Jianqi Liao, Siru Chen, Bing Fu, Qin Huang, Sasa Wang

引用次数: 0

Synthesis of Functionalized Benzo[h]Quinolines via Base-Catalyzed 1,4-Addition/Intramolecular Annulation Cascade. 碱催化1,4加成/分子内环化级联合成功能化苯并[h]喹啉。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-23 DOI: 10.1002/asia.202500587

Wannaporn Disadee, M Paul Gleeson, Somsak Ruchirawat

{"title":"Synthesis of Functionalized Benzo[h]Quinolines via Base-Catalyzed 1,4-Addition/Intramolecular Annulation Cascade.","authors":"Wannaporn Disadee, M Paul Gleeson, Somsak Ruchirawat","doi":"10.1002/asia.202500587","DOIUrl":"https://doi.org/10.1002/asia.202500587","url":null,"abstract":"Benzo[h]quinoline (BhQ) is an important scaffold in biologically active natural products and synthetic molecules. However, current synthetic methods for BhQs require multiple steps, harsh conditions, and/or long reaction times. In this study, we developed an atom- and step-economical approach for the one-pot synthesis of functionalized BhQs. The key transformation is the formation of new 2C─C and 1C─N bonds via the lithium-hexamethyldisilazane-catalyzed double annulation cascade reaction of benzonitriles and diynones, leading to the synthesis of thirty-four BhQs in up to quantitative yield. Exploration of the substrate scope under the optimized conditions revealed the reactivity of 2-(cyanomethyl)benzonitriles and regioselectivity of unsymmetrical diynones, which were significantly influenced by electronic and steric effects. Building on density functional theory calculations, we proposed a putative reaction mechanism that provides insights into the origin of the observed regioselectivity. Practical gram-scale synthesis and modification of functional groups around the BhQ core gave direct access to seven BhQ derivatives, demonstrating the benefits of our one-pot approach for the construction of complex molecules for synthetic and pharmaceutical applications.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00587"},"PeriodicalIF":3.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144367702","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

Selective Sulfide Oxidation with Hydrogen Peroxide Catalyzed by a Silica-Supported Polypyridyl-Iron Complex. 二氧化硅负载的聚吡啶-铁配合物催化过氧化氢选择性硫化物氧化。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-23 DOI: 10.1002/asia.202500633

Saikat Bera, Ranit Datta, Afsar Ahmed, Arindam Dey, Subhasis Mondal, Tania Mukherjee, Partha Halder, Debajyoti Pramanik, Debobrata Sheet

{"title":"Selective Sulfide Oxidation with Hydrogen Peroxide Catalyzed by a Silica-Supported Polypyridyl-Iron Complex.","authors":"Saikat Bera, Ranit Datta, Afsar Ahmed, Arindam Dey, Subhasis Mondal, Tania Mukherjee, Partha Halder, Debajyoti Pramanik, Debobrata Sheet","doi":"10.1002/asia.202500633","DOIUrl":"https://doi.org/10.1002/asia.202500633","url":null,"abstract":"Inspired by biomimetic models of non-heme iron oxygenase, an iron(II)-complex ligated by a polypyridyl ligand (TPAN) has been covalently anchored onto silica beads to exploit its oxidation capabilities towards sulfide oxidation in the presence of hydrogen peroxide as an oxidant. The prepared catalyst [Fe-TPAN@SiO2] was characterized by Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS). The silica-supported catalyst, measuring under 300 nm in size as observed via transmission electron microscopy (TEM), showed outstanding selectivity in the mono-oxygenation of sulfides, yielding the corresponding sulfoxides with high efficiency. The immobilized catalyst showed far better conversion as compared to the analogous homogeneous complex. The catalyst could be isolated and reused up to six cycles without losing the activity-selectivity profiles. A simultaneous involvement of an iron-oxygen intermediate and a Fenton-type process is proposed, with the former presumed to be the dominant oxidation pathway.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00633"},"PeriodicalIF":3.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144473460","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

Computational Investigation of Structural, Optoelectronic, and Charge Transport Properties of Heteroatoms Doped Graphene Quantum Dot with Lithium and Potassium Polysulfides. 锂和钾多硫化物掺杂石墨烯量子点结构、光电和电荷输运性质的计算研究。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-23 DOI: 10.1002/asia.202500529

Mohd Shavez, Seetha Lakshmy, Chandra S Sharma

{"title":"Computational Investigation of Structural, Optoelectronic, and Charge Transport Properties of Heteroatoms Doped Graphene Quantum Dot with Lithium and Potassium Polysulfides.","authors":"Mohd Shavez, Seetha Lakshmy, Chandra S Sharma","doi":"10.1002/asia.202500529","DOIUrl":"https://doi.org/10.1002/asia.202500529","url":null,"abstract":"In this study, we investigate the effect of heteroatom doping in graphene quantum dots (GQDs) in boosting the performance of metal-sulfur batteries using density functional theory (DFT) calculations. The properties, such as highest occupied and lowest unoccupied molecular orbits levels, absorption spectra, fundamental bandgap, adsorption energies, density of states, and charge transport properties of GQDs, heteroatom-doped GQDs, S8, Li2Sx (x = 2, 4, 6, and 8), and K2Sx (x = 2, 4, 6, and 8), are compared to evaluate the best dopant in the carbon matrix. Our results show that the heteroatom-doped systems have a lower bandgap and, therefore, better conductivity. Further, based on adsorption energy calculations, we find that Li2S8 and K2S8 exhibit strong interaction with P- and S-doped GQDs, and thus, heteroatom doping can help to lower the shuttle effect. In addition, electron mobilities in N-, P-, and S-doped GQDs are larger than in the GQDs. The detailed analysis suggests that P and S are better dopants owing to their catalytic behavior toward soluble polysulfide apart from increasing the conductivity. This study can be helpful for the design and development of an efficient cathode matrix for lithium and potassium sulfur batteries.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00529"},"PeriodicalIF":3.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144473454","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