ChemPhotoChem最新文献_第2页

Exploring Halogenation and Hydrogen Bonding in Conjugated Poly (3-Thienylboronic Acid)/g-C3N5 Nanosheet Heterojunctions for Highly Efficient Photocatalytic Hydrogen Production Under Visible Light Irradiation 聚（3-噻吩硼酸）/g-C3N5纳米片异质结在可见光下高效光催化制氢的卤化和氢键探索

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-06-17 DOI: 10.1002/cptc.202500034

Saravanan Kamalakannan, Natarajan Balasubramaniyan, Neppolian Bernaurdshaw

{"title":"Exploring Halogenation and Hydrogen Bonding in Conjugated Poly (3-Thienylboronic Acid)/g-C3N5 Nanosheet Heterojunctions for Highly Efficient Photocatalytic Hydrogen Production Under Visible Light Irradiation","authors":"Saravanan Kamalakannan, Natarajan Balasubramaniyan, Neppolian Bernaurdshaw","doi":"10.1002/cptc.202500034","DOIUrl":"10.1002/cptc.202500034","url":null,"abstract":"To generate hydrogen efficiently by using visible light, it is important to investigate closely contacted halogens (Cl, Br, I)-conjugated polymer semiconductors/g-C3N5 heterojunction photocatalysts with photogenerated-carrier separation. This work demonstrated the successful fabrication of halogens (Cl, Br, I)-conjugated poly [3-thienylboronic acid (BA)]/g-C3N5 nanosheet heterojunctions for hydrogen evolution utilizing visible light. Photoluminescence spectra (PL), time-resolved photoluminescence spectra, and density functional theory suggest that the improved photocatalytic performance results from charge separation generated by photo-generated electron transfer from g-C3N5 to IBA. To maintain tight interface contacts, boronic acid groups [–B(OH)2] of (Cl, Br, I) poly-BA and amino groups (–NH2) of g-C3N5 exhibit hydrogen bonding interactions. When comparing the ratio-optimized 5IBA–CN to g-CN, it demonstrates a 34-fold improvement in hydrogen (H2) production activity up to 4107.5 μmol g h−1 during visible-light radiation exposure. An abundant hydrogen bonding network on the surfaces of heterojunctions facilitates the uniform layering of Pt nanoparticles as cocatalysts. This research persents a feasible method for designing heterojunctions from polymeric materials to be used as solar-light-driven photocatalysts.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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How Donor–Bridge–Acceptor Orientation and Chemical Modification Affect the Thermally Activated Delayed Fluorescence Abilities of Boron-Based Emitters 给体-桥体-受体取向和化学修饰如何影响硼基发射体的热激活延迟荧光能力

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-06-16 DOI: 10.1002/cptc.202500033

Jeremy M. Kaminski, Tu V. Chu, Christel M. Marian

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Light-Mediated Modification and Manipulation of Nucleic Acids 光介导的核酸修饰和操作

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-06-14 DOI: 10.1002/cptc.202500098

Yujie Jiang, Yutong Zhou, Ruoqian Xie, Yangyan Li, Raghunath Bag, Gang Chen

{"title":"Light-Mediated Modification and Manipulation of Nucleic Acids","authors":"Yujie Jiang, Yutong Zhou, Ruoqian Xie, Yangyan Li, Raghunath Bag, Gang Chen","doi":"10.1002/cptc.202500098","DOIUrl":"10.1002/cptc.202500098","url":null,"abstract":"Chemical modification of nucleic acids (oligonucleotide, DNA, and RNA) is a powerful tool, widely used in chemical biology. There is a growing interest in light-mediated nucleic acid modification within biological systems, driven by the exceptional spatiotemporal precision that light offers. Moreover, light-induced chemical modification of nucleic acids, utilizing light as an external energy source, offers a powerful and efficient alternative to conventional labor-intensive de novo synthesis. In this regard, visible light exhibits a highly efficient and selective approach, enabling precise labeling of target sites without compromising their structural integrity, while high-energy UV light triggers detrimental photochemical reactions, causing DNA/RNA damage. Light-mediated selective labeling and interstrand crosslinking of DNA/RNA duplexes hold great potential for applications in DNA repair, gene regulation, and nanotechnology. Photouncaging and photoswitching enable precise control over biological processes like transcription, RNA interference, and translation. Moreover, light-mediated DNA-encoded libraries provide a sustainable and efficient method for generating vast small-molecule libraries, valuable for pharmaceutical discovery. This review highlights recent advancements in light-mediated nucleic acid modifications, including labeling, crosslinking, photouncaging, photoswitching, and DNA-encoded library synthesis, accompanied by comprehensive discussion and analysis.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Front Cover: Recent Advances in Luminescence of Platinum Complexes in the Near Infrared Second Window (ChemPhotoChem 6/2025) 封面：铂配合物在近红外第二窗口的发光研究进展（ChemPhotoChem 6/2025）

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-06-13 DOI: 10.1002/cptc.202580601

Shingo Hattori, Kazuteru Shinozaki

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Recent Development of Upconversion Nanocrystal–Based Heterostructures: Synthetic Strategies and Biomedical Applications 上转换纳米晶体异质结构的最新进展：合成策略和生物医学应用

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-06-11 DOI: 10.1002/cptc.202500025

Yufang Kou, Minjia Yuan, Xiaomin Li

{"title":"Recent Development of Upconversion Nanocrystal–Based Heterostructures: Synthetic Strategies and Biomedical Applications","authors":"Yufang Kou, Minjia Yuan, Xiaomin Li","doi":"10.1002/cptc.202500025","DOIUrl":"10.1002/cptc.202500025","url":null,"abstract":"Upconversion nanocrystals (UCNC) as energy converters have garnered significant attention due to their exceptional luminescent properties. However, the limited performance capabilities of single UCNC fail to meet the demands of increasing application–oriented research. To integrate multiple functionalities, UCNC–based heterostructures have been explored. These heterostructures, comprising UCNC and other functional components (transition metals, semiconductors, quantum dots, metal–organic frameworks, SiO2, etc.), present an intriguing system in which the morphology and physicochemical properties are significantly influenced by the combination of functional units. As multifunctional hybrid architectures, UCNC–based heterostructures surmount the intrinsic limitations of individual UCNC configurations, exhibiting synergistically enhanced properties. Nevertheless, due to the chemical composition discrepancy and large lattice mismatches, the synthesis of UCNC–based heterostructures remains challenging. To date, most UCNC–based heterostructures have been fabricated through nonepitaxial growth methods, while epitaxial growth connections remain relatively limited. In this review, recent advancements in the field of UCNC–based heterostructures are summarized and trends in their biomedical applications are outlined. Finally, the challenges and potential opportunities in this field are discussed.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Breaking of Kasha's Rule: Excitation Wavelength-Dependent Emission from Acenaphthylene-Based Hydrazones and their Biological Studies 卡沙规则的打破：苊基腙的激发波长依赖性发射及其生物学研究

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-06-02 DOI: 10.1002/cptc.202500137

Rakshantha Srithar, Jayashree Venkatesh, Jegadheeshwari Saravanan, Kesavan Muthu, Susnata Pramanik

{"title":"Breaking of Kasha's Rule: Excitation Wavelength-Dependent Emission from Acenaphthylene-Based Hydrazones and their Biological Studies","authors":"Rakshantha Srithar, Jayashree Venkatesh, Jegadheeshwari Saravanan, Kesavan Muthu, Susnata Pramanik","doi":"10.1002/cptc.202500137","DOIUrl":"10.1002/cptc.202500137","url":null,"abstract":"Achieving multicolor emissions from a single molecule has been an active field of research, particularly in developing organic light-emitting diodes. Reported herein is acenaphthylenedione (AcD), which displays multiple colors as a function of excitation wavelengths. Experimental and theoretical data reveal that the latter emits strongly from S3 and weakly from S2, while S1 remains as a dark state, thus violating Kasha's rule. The calculated large energy difference between S2 and S3 (i.e., 1.00 eV) promotes radiative decay from S3 rather than internal conversion (IC) to S1. Hydrazones derived from the same also possess excitation wavelength-dependent emission. Time-dependent density functional theory (TDDFT) calculations reveal that the longer wavelength emission can be assigned to enol-form, produced through excited-state intramolecular proton transfer (ESIPT) and locally excited (LE) keto-form, while that of the shorter wavelength to LE S2, thus disobeying Kasha's rule. The calculated energy difference (ΔES1-S2) is found to be 0.64 eV, which reduces the rate of IC (i.e., S2 → S1), resulting in the emission from the higher excited state. N-methylated hydrazone, which blocks the ESIPT channel, also supports the hypothesis. Furthermore, all the compounds exhibit aggregation-induced emission behavior, and nitro- and cyano-substituted hydrazones are found as good candidates for antibacterial, antioxidant, and anticancer activities.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 9","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Photochemistry of Resveratrol: Beyond the Reactivity of Metal-Free Porphyrins Immobilized on Lignin 白藜芦醇的光化学反应：木质素固定化无金属卟啉的反应活性

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-06-01 DOI: 10.1002/cptc.202500073

Elisa De Marchi, Alessia Marino, Fabiana Fosso, Natalia Ceccotti Vlas, Davide Piccinino, Eliana Capecchi, Lorenzo Botta, Marcello Crucianelli, Raffaele Saladino

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Light- and Water-Driven Nanoarchitectonics of Amphiphilic Azobenzene Derivatives: Photoswitching and Self-Aggregation Dispersion Studies 光和水驱动两亲性偶氮苯衍生物的纳米结构：光开关和自聚集分散研究

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-05-30 DOI: 10.1002/cptc.202500052

Gopal Kumar Mahato, Samridhi Patel, Durg Vijay Singh, Girish Chandra

{"title":"Light- and Water-Driven Nanoarchitectonics of Amphiphilic Azobenzene Derivatives: Photoswitching and Self-Aggregation Dispersion Studies","authors":"Gopal Kumar Mahato, Samridhi Patel, Durg Vijay Singh, Girish Chandra","doi":"10.1002/cptc.202500052","DOIUrl":"10.1002/cptc.202500052","url":null,"abstract":"Herein, how aggregation-dispersion behavior of fluorinated azobenzene derivatives 5 and 6 with an amphiphilic dodecaoctane substituent is affected by UV light irradiation and water is described. The influence of fluorine substituents on their photophysical properties, photoswitching differences, and aggregation in waterin-ground trans and excited cis-state is studied. Their photophysical and photoswitching properties are investigated under the polar MeOH and nonpolar solvent benzene and it is found that 6 shows different behavior as compared to 5 in both solvents. Further, to check their aggregation properties in MeOH, a competing solvent water is added. It is observed that in MeOH–H2O solution (0.9-1.5 mL), compounds show a redshift with a decrease in the absorbance, and fluorescence emission is found. Further, dynamic light scattering shows the opposite behavior, 5 initially is in the macromolecular aggregated state both in trans and cis-states but the addition of water disperses the solution. However, 6 shows uniform micromolecular aggregated features in the trans-state and disperses further after the addition of water. Scanning electron microscopy images of 5 and 6 suggest aggregated patterns that change the morphology when added to water. IR, 1H, and 19F NMR are done to understand the site of aggregation and intermolecular interactions.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 8","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144870066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Photoinduced Electron Donor–Acceptor Complex-Enabled Transformations Involving Boron-Containing Compounds 含硼化合物的光诱导电子供体-受体络合物转化

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-05-25 DOI: 10.1002/cptc.202500018

Jianzhong Lu, Huayong Zhang, Guozhu Zhang, Rui Guo

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Advances in Nonlinear Optics of Twisted Push Pull Organic Chromophores 扭曲推拉有机发色团的非线性光学研究进展

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-05-25 DOI: 10.1002/cptc.202500017

Kai Xue, Xiang-Zhao Zhu, Jian-Feng Yan, Song-Hua Chen, Yao-Feng Yuan

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