Chemistry - An Asian Journal最新文献_第9页

Photo-Induced Cracking in a Bi-Component Molecular Solid: Capturing Structural Intermediates.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-26 DOI: 10.1002/asia.202401518

Mollah Rohan Ahsan, Manish Kumar Mishra, Arijit Mukherjee

引用次数: 0

Chitosan-Hydroxyapatite Composite Membranes Reinforced with Functionalized Multiwalled Carbon Nanotubes for Advancing Guided Bone Regeneration.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-26 DOI: 10.1002/asia.202401631

Shivi Tripathi, Bindiya Dhimmar, Chinmay Mahapatra, Rajesh Vasita, Harpreet Singh, Himansu Sekhar Nanda

{"title":"Chitosan-Hydroxyapatite Composite Membranes Reinforced with Functionalized Multiwalled Carbon Nanotubes for Advancing Guided Bone Regeneration.","authors":"Shivi Tripathi, Bindiya Dhimmar, Chinmay Mahapatra, Rajesh Vasita, Harpreet Singh, Himansu Sekhar Nanda","doi":"10.1002/asia.202401631","DOIUrl":"10.1002/asia.202401631","url":null,"abstract":"Dental implant failure, often due to bone resorption and poor osteointegration, can be mitigated using barrier membranes to prevent non-osteogenic tissue interference during bone healing. In addition to the existing barrier membranes, guided bone regeneration has opened new avenues for membrane design, allowing them to actively participate in bone regeneration rather than merely serving as barriers. In this context, the aim of this study was to fabricate a composite membrane that can mimic the native extracellular matrix of the native tissue. The novel composite membranes containing chitosan, hydroxyapatite (5 %), and multiwall carbon nanotubes (0.5 to 2 % ) were created using the solvent casting method. The composite membranes were assessed for morphology, structure, thermal, and mechanical properties. The non-porous surfaces with uniformly dispersed particles in membranes showed that adding 0.5 % functionalized MWCNTs enhanced tensile strength (5.25 MPa to 17.84 MPa) and Young's modulus (66.89 MPa to 747.02 MPa) but reduced thermal stability. The membranes maintained slightly alkaline pH without toxic leachates and demonstrated over 50 % cell viability, suggesting their potential for guided bone regeneration in dental applications.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401631"},"PeriodicalIF":3.5,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143497537","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

Advanced Anion Exchange Membranes: Structural Insights and Property Optimization 高级阴离子交换膜：结构洞察与性能优化。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-26 DOI: 10.1002/asia.202401454

Lin Liu, Wenguang Du, Ning Zhang

引用次数: 0

Exploration of ESIPT in 4,6-O-Ethylidene-N-(2-hydroxybenzylidene)-β-D-glucopyranosylamine and Its Application in Selective Turn-on Response Toward Lu(III) ion.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-26 DOI: 10.1002/asia.202401432

Parmeshthi Parikh, Anuvasita Parikh, Santosh Kumar Mishra, Vimal Kumar Madduluri, Ajay K Sah

引用次数: 0

Optimizing Hole Transport Materials for Perovskite Solar Cells: Spiro-OMeTAD Additives, Derivatives and Substitutes. 优化过氧化物太阳能电池的空穴传输材料：螺-OMeTAD 添加剂、衍生物和替代品。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-25 DOI: 10.1002/asia.202500056

Jinxu Wen, Kun Zhang, Xiwen Zhang, Yang Wang, Yanlin Song

{"title":"Optimizing Hole Transport Materials for Perovskite Solar Cells: Spiro-OMeTAD Additives, Derivatives and Substitutes.","authors":"Jinxu Wen, Kun Zhang, Xiwen Zhang, Yang Wang, Yanlin Song","doi":"10.1002/asia.202500056","DOIUrl":"10.1002/asia.202500056","url":null,"abstract":"Spiro-OMeTAD (2,2',7,7'-tetrakis (N, N-di-p-methoxyphenylamine) -9,9'-spirobifluorene) has been a key hole transport material (HTM) in perovskite solar cells (PSCs) due to its excellent charge transport properties and compatibility with high-efficiency devices. However, its widespread application in PSCs is hindered by the limitations such as environmental sensitivity, high production costs, and the optimal conductivity via chemical doping process. This review explores three critical approaches to addressing these challenges: 1) the Spiro-OMeTAD-based additives and specialized treatments, including oxygen-free processes, that enhance stability and performance; 2) the development of Spiro-OMeTAD derivatives designed to improve HTM properties such as moisture resistance; 3) the exploration of Spiro-OMeTAD substitutes with cost-effectiveness and better scalability. By examining these strategies, this review provides the insights based on the traditional Spiro-OMeTAD to improve the efficiency, stability, and commercial viability of PSCs. The findings are intended to guide future research and development in the advancing PSCs technology towards broader adoption.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202500056"},"PeriodicalIF":3.5,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143497571","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

Spectroscopic and Theoretical Tools Unravel the Thermally-Stabilized Behavior of Eu³⁺-Based Complex Incorporated in Sustainable Urethanesil Film. 光谱和理论工具揭示了可持续聚氨酯硅薄膜中 Eu3+ 基复合物的热稳定行为。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-25 DOI: 10.1002/asia.202401612

Fábio José Caixeta, Leonardo Figueiredo Saraiva, Beatriz Damasio de Freitas, Bruno Seiki Domingos Onishi, Silvia Helena Santagneli, Ricardo Bortoletto-Santos, Ana Maria Pires, Sidney José Lima Ribeiro

{"title":"Spectroscopic and Theoretical Tools Unravel the Thermally-Stabilized Behavior of Eu3+-Based Complex Incorporated in Sustainable Urethanesil Film.","authors":"Fábio José Caixeta, Leonardo Figueiredo Saraiva, Beatriz Damasio de Freitas, Bruno Seiki Domingos Onishi, Silvia Helena Santagneli, Ricardo Bortoletto-Santos, Ana Maria Pires, Sidney José Lima Ribeiro","doi":"10.1002/asia.202401612","DOIUrl":"10.1002/asia.202401612","url":null,"abstract":"Despite significant ongoing efforts to develop luminescent rare-earth β-diketonate complexes, achieving thermal stability remains a persistent challenge. In this study, we present a thermally stable organic-inorganic hybrid (OIH) compound, SiCO-[Eu(tta)3(H2O)2], where tta=thenoyltrifluoroacetonate, Si=3-(triethoxysilyl)propyl isocyanate, and CO=castor oil. Spectroscopic analysis reveals that while [Eu(tta)3(H2O)2] in its powder form undergoes irreversible photoluminescence quenching at 60 °C and embedding it in the SiCO polymer preserves its luminescence even after being annealed up to 180 °C. Notably, the hybrid film maintains stable emission properties after multiple heating-cooling cycles (29-70 °C) and exhibits reversible emission behavior. This finding is attributed to polymer-complex interactions and/or the replacement of water molecules with polymer coordination, resulting in a more rigid environment in the Eu3+ coordination sphere. The thermal dependence of intramolecular energy transfer (IET) indicates that the decrease in Eu3+ luminescence is linked to faster depopulation of the emitting level, driven by non-radiative relaxation and back-energy transfer. This outcome enabled us to strategize approaches to mitigate luminescence quenching in OIH while providing valuable insights into the photophysical properties of these compounds, thus offering a guide towards how we can boost the capabilities of these materials.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401612"},"PeriodicalIF":3.5,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143497578","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

Red and Near-Infrared Thermally Activated Delayed Fluorescence Emitters Based on a Dibenzo[f,h]pyrido[2,3-b]quinoxaline Acceptor.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-25 DOI: 10.1002/asia.202500136

Falak Naz, Changfeng Si, Suela Kellici, Muhammad Tariq Sajjad, Eli Zysman-Colman

{"title":"Red and Near-Infrared Thermally Activated Delayed Fluorescence Emitters Based on a Dibenzo[f,h]pyrido[2,3-b]quinoxaline Acceptor.","authors":"Falak Naz, Changfeng Si, Suela Kellici, Muhammad Tariq Sajjad, Eli Zysman-Colman","doi":"10.1002/asia.202500136","DOIUrl":"10.1002/asia.202500136","url":null,"abstract":"Recently, there has been growing interest in deep red (DR) and near-infrared (NIR) thermally activated delayed fluorescence (TADF) emitters due to their potential use in applications in bioimaging and night-vision displays. Herein, we designed and synthesized a series of red/NIR TADF emitters, DMAC, PXZ, and DPACz, that all contain the same electron-accepting PyBP (dibenzo [f, h] pyrido [2,3-b]quinoxaline) moiety. These compounds emit at 643 nm for DMACPyBP, 722 nm for DPACz PyBP, and 743 nm for PXZPyBP in toluene solution, while their thin films singlet-triplet energy gaps (ΔEST) are <0.1 eV. DMACPyBP, with the weakest donor, has the highest ΦPL of 62.3 %, the smallest ΔEST of 0.03 eV, and a fast reverse intersystem crossing rate constant (kRISC) of 0.5×105 s-1 in a 1 wt% doped film in CBP. In contrast, PXZPyBP, containing the strongest donor, has a lower ΦPL (21.2 %), a relatively larger ΔEST (0.10 eV), and a slower kRISC (0.04×105 s-1). Thus, our work highlights the molecular design challenges involved in pushing emission into the NIR region while maintaing both TADF and high ΦPL in PyBP-based donor-acceptor emitters.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202500136"},"PeriodicalIF":3.5,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143497566","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

Benzo[1,3]oxathiol-2-one Motif-Based a New Chromogenic Copillar[5]arene: Synthesis, Solid-State Assembly, Photophysical Studies, and Colorimetric Recognition of S².

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-25 DOI: 10.1002/asia.202401653

Subrata Ranjan Dhara, Nabajyoti Baildya, Kumaresh Ghosh

{"title":"Benzo[1,3]oxathiol-2-one Motif-Based a New Chromogenic Copillar[5]arene: Synthesis, Solid-State Assembly, Photophysical Studies, and Colorimetric Recognition of S2.","authors":"Subrata Ranjan Dhara, Nabajyoti Baildya, Kumaresh Ghosh","doi":"10.1002/asia.202401653","DOIUrl":"10.1002/asia.202401653","url":null,"abstract":"Herein, for the first time, we have reported a route to the introduction of benzo[1,3]oxathiol-2-one group onto pillar[5]arene to synthesize a new copillar[5]arene, which gives a new pillar[5]arene derivative 1 upon further functionalization. The well-defined cavity of this new copillar[5]arene exhibits solvent inclusion properties as characterized by single-crystal X-ray structures. The present study explores the inclusion of ethyl acetate (EtOAc) and acetonitrile (CH3CN) and the supramolecular assemblies with different features in the solid state. Copillar[5]arene 1 shows inclination to form dimers in both EtOAc and CH3CN. While ethyl acetate-occupied macrocycles give 2D arrangement involving π-π interaction, acetonitrile-occupied macrocycles follow π-π, C-H⋅⋅⋅π, and H-bond interactions in 2D arrangement and create a rhombus-shaped molecular channel with a diameter of ~5.5 Å in 3D packing. Compound 1 shows good photophysical behavior and aggregation. It acts as a chromogenic sensor for the selective recognition of sulfide (S2-) over a series of other anions in both organic and aqueous-organic solvents. The detection limit for S2- is determined to be 3.81×10-7 M.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401653"},"PeriodicalIF":3.5,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143490267","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

Structure Evolution of Organic Luminescent Molecules Utilizing Through-Space Charge Transfer Mechanism.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-25 DOI: 10.1002/asia.202401488

Xin Meng, Xuteng Lang, Ziping Cao

{"title":"Structure Evolution of Organic Luminescent Molecules Utilizing Through-Space Charge Transfer Mechanism.","authors":"Xin Meng, Xuteng Lang, Ziping Cao","doi":"10.1002/asia.202401488","DOIUrl":"10.1002/asia.202401488","url":null,"abstract":"Organic structures provide an extensive platform for luminescent materials thanks to the easy to design and synthesize, low toxicity and tunable functionalization. Through-space charge transfer (TSCT) in organic molecules, characterized by the transfer of excitons through spatial charge motion, has emerged as a significant research topic in optoelectronics, offering new avenues for the development of high-performance luminescent materials. This review systematically summarizes the fundamental principles of TSCT and highlights the recent advancements in organic small molecules that exhibit this emission mechanism. Key aspects covered include the molecular design strategies that enhance TSCT efficiencies, the role of charge transport spacers, and the correlation between molecular donor-acceptor structures and emission properties. Furthermore, the review addresses the challenges and future directions in the field, emphasizing the importance of understanding TSCT for the development of next-generation light-emitting materials. By providing a comprehensive analysis of current research, this review serves as a crucial resource for researchers and practitioners aiming to innovate in the realm of organic optoelectronic materials, ultimately contributing to a deeper understanding of TSCT processes and their practical applications.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401488"},"PeriodicalIF":3.5,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143490201","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 Chemiluminescent Hydrogen Sulfide Probe with Multimodal Validation for Inflammation Diagnosis in Vivo.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-24 DOI: 10.1002/asia.202401909

Lianzhu Wei, Ling Chen, Yuanyong Li, Maocheng Yang, Mingyan Yang, Wen-Chao Geng, Zeli Yuan, Jie Gao

引用次数: 0