Chemistry - An Asian Journal最新文献_第2页

Intricacies of Carbon Dot Photoluminescence for Emerging Applications: A Review.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-05 DOI: 10.1002/asia.202401470

Nilanjana Nandi, Priyanka Sarkar, Neha Barnwal, Kalyanasis Sahu

{"title":"Intricacies of Carbon Dot Photoluminescence for Emerging Applications: A Review.","authors":"Nilanjana Nandi, Priyanka Sarkar, Neha Barnwal, Kalyanasis Sahu","doi":"10.1002/asia.202401470","DOIUrl":"https://doi.org/10.1002/asia.202401470","url":null,"abstract":"Discovered in 2004, carbon dots (CDs) have already traversed a long journey, generating many promising research directions. Its cheapness, ease of synthesis, high water-solubility, tunable emission, and excellent biocompatibility make it a single-point solution to many problems, and tremendous efforts were invested into understanding the structure-property-function relationship, which eases the engineering of the CD properties suitable for a desired application. From the usual random choice of precursors or carbon materials as a starting point in the early days, more systematic approaches are now available for choosing proper starting materials and appropriate experimental conditions (solvent medium, reaction temperature, reaction duration, pH, etc) to customize its photoluminescence. The presence of impurities has a crucial role in the outcome and applicability of photoluminescence. Recently, a significant focus has been on the long-wavelength emissive CDs, particularly in the red to near-infrared (NIR) regions, for better penetration into live cells and to circumvent autofluorescence problems. Proper design can harvest phosphorescence from CDs. Many excellent reviews are available, focusing on different facets of CD prospects. Hence, we will only highlight the importance of the optical properties of CDs. We will mention some of the new works that have appeared in the last five years.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401470"},"PeriodicalIF":3.5,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143187622","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

Semiconductor-bimetallic plasmonic heterojunction ZnO-Ag-Cu as reusable SERS substrate with attomolar detection limit.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-05 DOI: 10.1002/asia.202401580

Rojalin Behera, Amit Nag

{"title":"Semiconductor-bimetallic plasmonic heterojunction ZnO-Ag-Cu as reusable SERS substrate with attomolar detection limit.","authors":"Rojalin Behera, Amit Nag","doi":"10.1002/asia.202401580","DOIUrl":"https://doi.org/10.1002/asia.202401580","url":null,"abstract":"Semiconductor-bimetallic ZnO-Ag-Cu (ZAC) heterojunction of different compositions were fabricated as highly sensitive SERS substrates. ZnO nanorods were synthesized using a facile hydrothermal route. ZAC composites were synthesized via impregnation method by keeping ZnO content same and varying the mole fractions of Ag and Cu. The ZnO matrix, known for its stability and photocatalytic properties, was decorated with Ag and Cu nanoparticles to enhance plasmonic activity and boost SERS. Introducing semiconductor oxide as SERS substrate reduces the substrate cost due to its self-cleaning property upon exposure to UV light. When SERS activity of ZAC composites were compared with either ZnO-Ag (ZA) or ZnO-Cu (ZC) composites, the best SERS performance was recorded with ZAC55, where the Ag and Cu content are same. ZAC55 produced a SERS enhancement factor of 6.2 × 10⁶ and a limit of detection of 10-18 M 10-15 M for the analyte molecules Rhodamine 6G (R6G) and Methylene Blue (MB), respectively, using 532 nm laser excitation. The enhanced SERS performance is attributed to the synergistic effects of ZnO, Ag, and Cu, unveiling ZAC55 as a promising next-generation SERS substrate. Along with remarkable sensitivity, ZAC55 showed promising reusability and reproducibility, indicating its potential for practical applications in chemical sensing.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401580"},"PeriodicalIF":3.5,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143254119","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

Core-Only Calamitic Liquid Crystals: Molecular Design and Optoelectronic Properties. 唯芯钙钛矿液晶：分子设计与光电特性》。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-04 DOI: 10.1002/asia.202401543

Jacob G Rothera, Jessica Yu, Karla AlNajm, Rita Butrus, Ethan Ahangari-Bashash, Lara K Watanabe, Jeremy M Rawson, S Holger Eichhorn, Anton Dmitrienko, V Nicholas Vukotic

{"title":"Core-Only Calamitic Liquid Crystals: Molecular Design and Optoelectronic Properties.","authors":"Jacob G Rothera, Jessica Yu, Karla AlNajm, Rita Butrus, Ethan Ahangari-Bashash, Lara K Watanabe, Jeremy M Rawson, S Holger Eichhorn, Anton Dmitrienko, V Nicholas Vukotic","doi":"10.1002/asia.202401543","DOIUrl":"https://doi.org/10.1002/asia.202401543","url":null,"abstract":"Thermotropic liquid crystals are typically thought of as requiring a rigid core and flexible side-chains to exhibit liquid crystallinity, but precedent does exist for retaining liquid crystalline nature without these side-chains in highly conjugated, para-substituted aromatic structures, albeit at relatively high temperatures (> 300 °C). Hence, this work aims to establish molecular design criteria for promoting liquid crystallinity in heteroaromatic, fully conjugated, core-only calamitic liquid crystals at sufficiently low phase transition temperatures. The synthesis and characterization of an extensive library of calamitic target structures (32) has been accomplished, where primarily enantiotropic smectic A and nematic phases were observed. Comparison of the mesomorphic properties between different cores and with different terminal functional groups was done and rationalization of the observed differences is attempted through single crystal and computational data. These all-aromatic compounds also display strong fluorescence in solution and in the solid-state that extends over most of the visible spectrum and displays quantum yields between 3% and 95%.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401543"},"PeriodicalIF":3.5,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143187596","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

Tandem Oxidation-Condensation Tandem Catalysis via a Multifunctional Cu-Based Metal-Organic Framework.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-04 DOI: 10.1002/asia.202401614

Hyeonsu Kim, Younghu Son, Dogyeong Hwang, Purna Chandra Rao, Younghoon Kim, Minyoung Yoon

{"title":"Tandem Oxidation-Condensation Tandem Catalysis via a Multifunctional Cu-Based Metal-Organic Framework.","authors":"Hyeonsu Kim, Younghu Son, Dogyeong Hwang, Purna Chandra Rao, Younghoon Kim, Minyoung Yoon","doi":"10.1002/asia.202401614","DOIUrl":"https://doi.org/10.1002/asia.202401614","url":null,"abstract":"The development of heterogeneous catalysts for tandem reactions remains a significant challenge for practical applications, primarily due to the need for multiple isolated catalytic sites. This study presents a novel metal-organic framework (MOF), Cu-AIPA, formulated as Cu(AIPA)(DMF)2 (AIPA: 2-amino isophthalic acid, DMF: N, N-dimethylformamide). The Cu-AIPA framework integrates three distinct catalytic mechanisms: redox activity, Brønsted basicity, and Lewis acidity. The structure of Cu-AIPA features redox-active Cu(II) centers and Brønsted basic sites, enabling the sequential transformation of alcohols to aldehydes and their subsequent condensation into imines. The close spatial arrangement of these redox-active/Lewis acidic and basic sites within the confined pores of Cu-AIPA facilitates efficient tandem catalysis. This process involves oxidizing benzyl alcohol to benzaldehyde using TEMPO without requiring an external base, followed by amine condensation. Compared with HKUST-1, another Cu-based MOF with a high surface area, Cu-AIPA demonstrated superior catalytic performance at room temperature. Recyclability tests revealed that Cu-AIPA retained over 90% conversion efficiency across at least three catalytic cycles. This study highlights the potential of MOFs incorporating multiple catalytic sites and confined pore structures for tandem reactions, emphasizing their potential for scalable and sustainable industrial applications.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401614"},"PeriodicalIF":3.5,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143187713","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

Natural and Magnetic Circular Dichroism from the Infrared to the UV of a Hetero[4]Helicene Radical Cation.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-04 DOI: 10.1002/asia.202401752

Marco Fusè, Michela Lupi, Ewa Machalska, Giuseppe Mazzeo, Sergio Abbate, Julien Bloino, Caterina Viglianisi, Stefano Menichetti, Giovanna Longhi

{"title":"Natural and Magnetic Circular Dichroism from the Infrared to the UV of a Hetero[4]Helicene Radical Cation.","authors":"Marco Fusè, Michela Lupi, Ewa Machalska, Giuseppe Mazzeo, Sergio Abbate, Julien Bloino, Caterina Viglianisi, Stefano Menichetti, Giovanna Longhi","doi":"10.1002/asia.202401752","DOIUrl":"https://doi.org/10.1002/asia.202401752","url":null,"abstract":"Dithiabridged triarylamine hetero[4]helicenes are an interesting class of chiral compounds characterized by a high racemization barrier which makes them an attractive material for several applications. Their rich redox chemistry allows one to obtain radical cations stable at room temperature, that can be isolated in two configurationally stable enantiomers. While several studies have been reported on systems with transition metals possessing low-lying electronic states, the characterization of purely organic openshell systems by VCD is still scarce. This may be due to the instability of radical-cation species and to the dark color assumed by the solution at the high concentration required by VCD. The oxidation of this molecular system shifts the first electronic transition towards the Near-IR (NIR) region, at approximately 1250 nm. By combining ECD, VCD, MCD, NIR-CD and computational methodologies rooted in density functional theory, we have investigated one molecule of this class of compounds and shed some light on the chiroptical properties accessible via redox-switch.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401752"},"PeriodicalIF":3.5,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143187654","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

Evaluating the Drug Delivery Capacity of 3D Coordination Polymer for Anticancer Drugs.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-04 DOI: 10.1002/asia.202401475

Madiha Saqlain, Hafiz Muhammad Zohaib, Maroof Ahmad Khan, Samina Qamar, Sara Masood, Muhammad Lauqman, Mubashar Ilyas, Muhammad Irfan, Hui Li

{"title":"Evaluating the Drug Delivery Capacity of 3D Coordination Polymer for Anticancer Drugs.","authors":"Madiha Saqlain, Hafiz Muhammad Zohaib, Maroof Ahmad Khan, Samina Qamar, Sara Masood, Muhammad Lauqman, Mubashar Ilyas, Muhammad Irfan, Hui Li","doi":"10.1002/asia.202401475","DOIUrl":"https://doi.org/10.1002/asia.202401475","url":null,"abstract":"We synthesized {[Cd2(dTMP)2(4,4'-azpy)2(H2O)2] ⋅ 3(O)}n a novel three-dimensional metal nucleotide coordination polymer (CP-1). An assessment of the CP-1 binding affinity for anticancer drugs was conducted using molecular dynamic simulations. The virtual screening results depict that CP-1 has a lot of potential for encapsulating the anthracycline anticancer drug doxorubicin (DOX). It hasn't yet been investigated how to accomplish high loading capacity, efficiency, and controlled release of DOX in dTMP-based 3D metal coordination polymers. Utilizing DOX as a drug model and our system as a drug-loading vehicle, we used UV-visible and circular dichroism titrations to examine the effects of its encapsulation and release. The mechanism of drug loading and release was investigated through pH-responsive behavior by adjusting the pH value to 8, 7, 6, and 5. The results indicate the CP-1 has a robust affinity for DOX at pH 7, which facilitates its loading on 3D porous coordination polymer. However, the maximum cumulative drug release of 87.11 % was observed at pH 5. The higher correlation coefficient (R2) was obtained at pH 5 with the Higuchi equation. It indicated that the drug released was primarily controlled with the diffusion mechanism. The CP-1 polymer's ability to encapsulate DOX while also permitting a possible controlled-release mechanism is confirmed by the combined insights from the experimental findings, energy graphs, RMSD analysis, and radius of gyration (Rg) data from MD simulations.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401475"},"PeriodicalIF":3.5,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143187605","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 Hydrogen Evolution with Metal-Organic Framework-Derived Catalysts: Strategies for d-Band Modulation by Electronic Structure Modification.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-04 DOI: 10.1002/asia.202401484

Baghendra Singh, Toufik Ansari, Arindam Indra

{"title":"Electrochemical Hydrogen Evolution with Metal-Organic Framework-Derived Catalysts: Strategies for d-Band Modulation by Electronic Structure Modification.","authors":"Baghendra Singh, Toufik Ansari, Arindam Indra","doi":"10.1002/asia.202401484","DOIUrl":"https://doi.org/10.1002/asia.202401484","url":null,"abstract":"The effective use of metal-organic framework (MOF)-based materials in the electrocatalytic hydrogen evolution reaction (HER) relies on the understanding of their structural and electronic properties. While the structure and morphology of MOF-derived catalysts significantly impact HER activity, tuning the d-band structure through electronic structure modulation has emerged as a key factor in optimizing catalytic performance. Techniques such as composition tuning, heteroatom doping, surface modification, and interface engineering were found to be effective methods for manipulating the electronic configuration and, in turn, modulating the d-band. This review systematically explores the design strategies for MOF-derived catalysts by focusing on electronic structure modulation. It provides a detailed discussion of the various methods - used to modulate the electronic structure. Furthermore, the review establishes the relationship between d-band tuning, Gibbs free energy, and electronic structure modulation, supported by both spectroscopic and theoretical evidences.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e202401484"},"PeriodicalIF":3.5,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143187599","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

Hydrothermal Synthesis of Single-Crystal Europium Tungstate Hydroxide Nanobelts for Enhanced Humidity Sensing.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-03 DOI: 10.1002/asia.202401933

Jusheng Bao, Haiying Yang, Weicheng Xie, Kun Xu, Ting Zhang, Shaojun Li, Junming Chen, You Liu

引用次数: 0

Chiroptical Properties of Chiral Macrocycles Composed of Axially Chiral Binaphthyl and Bithiophene.

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-03 DOI: 10.1002/asia.202401920

Masashi Hasegawa, Hikari Kawashima, Daiki Tauchi, Misa Sakura, Kazunori Tsubaki

引用次数: 0

Front Cover: Photoinduced Electron Transfer System from Cesium Lead Bromide Quantum Dots to Naphthalenediimide Supramolecular Polymers (Chem. Asian J. 3/2025)

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-02-03 DOI: 10.1002/asia.202580301

Amrutha Manoj Lena, Mitsuaki Yamauchi, Hideyuki Murakami, Naoki Kubo, Sadahiro Masuo, Naoki Aratani, Hiroko Yamada

引用次数: 0