ChemPhotoChem最新文献_第5页

High-Efficiency Deep-Blue Solution-Processed Organic Light-Emitting Diodes Using Carbazole Dendrons Modified Hybridized Local and Charge-Transfer Emitters 利用咔唑树突修饰杂化局域和电荷转移发射器的高效深蓝溶液处理有机发光二极管

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-10-21 DOI: 10.1002/cptc.202400247

Nuttapong Chantanop, Atthapon Saenubol, Teerapat Itsoponpan, Nipanan Prakanpo, Praweena Wongkaew, Thidarat Loythaworn, Wijitra Waengdongbung, Taweesak Sudyodsuk, Vinich Promarak

{"title":"High-Efficiency Deep-Blue Solution-Processed Organic Light-Emitting Diodes Using Carbazole Dendrons Modified Hybridized Local and Charge-Transfer Emitters","authors":"Nuttapong Chantanop, Atthapon Saenubol, Teerapat Itsoponpan, Nipanan Prakanpo, Praweena Wongkaew, Thidarat Loythaworn, Wijitra Waengdongbung, Taweesak Sudyodsuk, Vinich Promarak","doi":"10.1002/cptc.202400247","DOIUrl":"https://doi.org/10.1002/cptc.202400247","url":null,"abstract":"In the pursuit of efficient and cost-effective organic light-emitting diodes (OLEDs), the development of solution-processed hybridized local and charge transfer (HLCT) emitters presents a promising approach. HLCT materials uniquely integrate the advantages of both singlet and triplet excitons, surpassing the traditional spin statistical limit of 25 % while offering high photoluminescence efficiency and balanced charge transport properties. Herein, we report the synthesis and characterization of two new deep blue, solution-processable HLCT fluorophores, G1FTPI and G2FTPI. These compounds incorporate fluorenyl carbazole dendron units into the HLCT luminogenic triphenylamine-phenanthroimidazole (TPI) molecule. Their HLCT and photoluminescence (PL) properties were experimentally and theoretically investigated using solvation effects and density functional theory (DFT) calculations. The molecules exhibit deep blue emission with a high solid-state fluorescence quantum yield, good solution-processed film-forming quality, and high hole mobility values of 2.18–2.61×10−6 cm2 V−1 s−1. Both compounds were successfully employed as non-doped emissive layers in solution-processed OLEDs, demonstrating excellent electroluminescent (EL) performance. Notably, the G2FTPI-based device emitted a deep blue light at 432 nm with CIE coordinates of (0.158, 0.098) and achieved a maximum current efficiency (CEmax) of 3.13 cd A−1 and a maximum external quantum efficiency (EQEmax) of 5.30 %.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117753","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

Alkylcyanation of Unactivated Alkenes with Protic C(sp3)−H Feedstocks via Radical-Initiated Intramolecular Cyano Group Migration Enabled by Photoredox/Brønsted Base Dual Catalysis 以C(sp3)−H为原料，光氧化还原/Brønsted碱双催化下自由基引发的分子内氰基迁移对未活化烯烃的烷基氰化反应

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-10-18 DOI: 10.1002/cptc.202400282

Yang Hong, Hong-Ping Deng

引用次数: 0

Selective Photocatalytic Benzene Oxidation Using Iron-Carbon Nitride Fragments Functionalized with Cyamelurate-Like Groups 用类氰酸盐官能团功能化的氮化铁碳片段选择性光催化苯氧化

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-10-12 DOI: 10.1002/cptc.202400130

Wanessa L. Oliveira, Marcos A. R. da Silva, Gabriel Ali Atta Diab, José Balena G. Filho, Vitor G. S. Pastana, Luana L. B. Silva, Eduarda Ferreira de Oliveira, Walker Vinícius Ferreira do Carmo Batista, Taís dos Santos da Cruz, Valmor Roberto Mastelaro, Manoel José Mendes Pires, Ivo Freitas Teixeira, João P. de Mesquita

{"title":"Selective Photocatalytic Benzene Oxidation Using Iron-Carbon Nitride Fragments Functionalized with Cyamelurate-Like Groups","authors":"Wanessa L. Oliveira, Marcos A. R. da Silva, Gabriel Ali Atta Diab, José Balena G. Filho, Vitor G. S. Pastana, Luana L. B. Silva, Eduarda Ferreira de Oliveira, Walker Vinícius Ferreira do Carmo Batista, Taís dos Santos da Cruz, Valmor Roberto Mastelaro, Manoel José Mendes Pires, Ivo Freitas Teixeira, João P. de Mesquita","doi":"10.1002/cptc.202400130","DOIUrl":"https://doi.org/10.1002/cptc.202400130","url":null,"abstract":"Carbon nitrides have emerged as promising supports for catalytically active metals in various chemical reactions. Among these, the selective oxidation of benzene to phenol stands out as particularly challenging within the chemical industry due to its traditionally low yields and complex reaction pathways. In our current investigation, we have focused on the synthesis of ionic carbon nitride fragments via a straightforward alkaline hydrolysis method. These fragments demonstrate a remarkable ability to stabilize iron cations within the carbon nitride structure (Frag-Fe), resulting in a highly efficient photocatalyst for benzene oxidation. Employing hydrogen peroxide as the oxidant in a single-step reaction, we achieved an impressive 47 % yield of phenol using Frag-Fe at 12 hours, with negligible production of CO2 as a byproduct. This compelling outcome underscores the effectiveness of our alkaline synthesis approach in generating carbon nitride-based photocatalysts with exceptional activity for C−H oxidation reactions. Our findings not only contribute to the advancement of carbon nitride-based catalysis, but also hold significant promise for the development of more sustainable and efficient chemical processes in the future.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cptc.202400130","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

TiO2 Surface Hybridisation with Ag and CuO for Solar-Assisted Environmental Remediation and Sustainable Energy Applications TiO2与Ag和CuO表面杂化在太阳能辅助环境修复和可持续能源中的应用

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-10-10 DOI: 10.1002/cptc.202400254

D. Dvoranová, K. Koci, L. Lajaunie, M. F. Edelmannova, M. P. Seabra, V. Brezová, R. Arenal, J. A. Labrincha, D. M. Tobaldi

{"title":"TiO2 Surface Hybridisation with Ag and CuO for Solar-Assisted Environmental Remediation and Sustainable Energy Applications","authors":"D. Dvoranová, K. Koci, L. Lajaunie, M. F. Edelmannova, M. P. Seabra, V. Brezová, R. Arenal, J. A. Labrincha, D. M. Tobaldi","doi":"10.1002/cptc.202400254","DOIUrl":"https://doi.org/10.1002/cptc.202400254","url":null,"abstract":"Industrialisation has led to unprecedented levels of outdoor air pollution, posing a significant health risk to human beings. Consequently, there is an urgent need to replace fossil fuels with sustainable energy sources, thereby mitigating these risks and providing a safer outdoor and indoor environment. Titanium dioxide is a versatile transition metal oxide with applications ranging from energy conversion to environmental remediation. However, it faces limitations, particularly in its absorption spectrum and charge separation efficiency, and enhancing these properties remains a significant challenge. In this research work, we have decorated the surface of TiO2 hybridising it with noble-metal and/or noble-metal oxides (Ag and/or CuO) to improve the photocatalytic performances (monitoring the removal of nitrogen oxides and benzene, and hydrogen generation from water splitting) under simulated solar-light irradiation. Our results showed that titania modified with an Ag : Cu molar ratio equal to 1 : 1, not only exhibited the most promising performance in terms of nitrogen oxides and benzene removal, it was the optimum amount for the light-induced generation of hydrogen from water splitting.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cptc.202400254","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Luminescent Pentacene-Loaded Carbon Nanodots with Red-Light Triggered Photothermal and Photosensitizing Properties 具有红光触发光热和光敏特性的负载并五苯的发光碳纳米点

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-10-08 DOI: 10.1002/cptc.202400167

Giuseppe Forte, Grazia M. L. Consoli, Loredana Ferreri, Ludovica Maugeri, Alice Foti, Cristina Satriano, Giorgia Fangano, Salvatore Petralia

{"title":"Luminescent Pentacene-Loaded Carbon Nanodots with Red-Light Triggered Photothermal and Photosensitizing Properties","authors":"Giuseppe Forte, Grazia M. L. Consoli, Loredana Ferreri, Ludovica Maugeri, Alice Foti, Cristina Satriano, Giorgia Fangano, Salvatore Petralia","doi":"10.1002/cptc.202400167","DOIUrl":"https://doi.org/10.1002/cptc.202400167","url":null,"abstract":"The development of multifunctional nanosystems for photo-induced hyperthermia and photodynamic effect is a challenging topic in the research of advanced materials for application in biomedical field. Here, we report red-luminescent carbon-nanodots (CDs-PNM/PTC) derived from entrapment of pentacene (PTC) in nanodots prepared from poly(N-isopropylacrylamide) polymer (CDs-PNM) by an easy and reagent-free method. The CD-PNM/PTC nanosystem was characterized by different techniques (UV-Vis spectrophotometry, fluorescence, NMR, AFM). Molecular modelling investigations were performed to unveil stability, structures and energy of the CD-PNM/PTC supramolecular adducts at 298 K and 315 K. The nanosized CDs-PNM/PTC exhibited excellent water-dispersibility, good photothermal conversion efficiency and photosensitizing effect at 680 nm. No significant toxicity and eukaryotic cell uptake are features that open to potential applications in photothermal-photodynamic treatments.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cptc.202400167","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Front Cover: Diindeno-Fused Corannulene-Extended Tetrathiafulvalenes (ChemPhotoChem 10/2024) 封面：二茚并熔芫荽烯-扩展四硫杂戊烯（ChemPhotoChem 10/2024）

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-10-08 DOI: 10.1002/cptc.202481001

Dr. Viktor Bliksted Roug Pedersen, Prof. Dr. Ramesh Jasti, Prof. Dr. Mogens Brøndsted Nielsen

引用次数: 0

One-Step Synthesis of Melem-Based Supramolecular Assemblies and Their Photocatalytic Properties 密勒姆基超分子组装体的一步合成及其光催化性能

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-10-07 DOI: 10.1002/cptc.202400255

Vitaliy Shvalagin, Yevheniia Markushyna, Diana Piankova, Erik Svensson Grape, Nadezda V. Tarakina, Oleksandr Savateev

引用次数: 0

Enhanced Photocatalytic Activity of Nickel(II)-Doped Bi2O2CO3 Nanosheets for Efficient Nitric Oxide Removal 镍（II）掺杂Bi2O2CO3纳米片增强光催化活性以高效去除一氧化氮

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-10-02 DOI: 10.1002/cptc.202400244

Shuwei Wei, Qiuhui Zhu, Haitao Ren, Ximing Li, Yue Xin, Hui Wang, Chuanyi Wang

{"title":"Enhanced Photocatalytic Activity of Nickel(II)-Doped Bi2O2CO3 Nanosheets for Efficient Nitric Oxide Removal","authors":"Shuwei Wei, Qiuhui Zhu, Haitao Ren, Ximing Li, Yue Xin, Hui Wang, Chuanyi Wang","doi":"10.1002/cptc.202400244","DOIUrl":"https://doi.org/10.1002/cptc.202400244","url":null,"abstract":"Bi2O2CO3 is a typical bismuth-based semiconductor photocatalyst that has attracted much attention because of layered structure and polarization characteristics. However, the wide bandgap of Bi2O2CO3 limits its practical applications in photocatalysis. In this study, the nickel (II)-doped Bi2O2CO3 (Ni2+-Bi2O2CO3) with oxygen vacancies was prepared by adding a controllable amount of nickel ions. The photocatalytic efficiency of the optimized sample for ppb-grade NO under visible light irradiation is 59.4 %, which is 2.8 times than that of its counterpart, Bi2O2CO3 (21.2 %). Based on experiments and characterizations, Introduction of nickel ions and oxygen vacancies improves the photocatalytic performance of Ni2+-Bi2O2CO3, which not only lowered the bandgap from 3.25 eV to 2.92 eV, but also reduced the recombination of photogenerated carriers by formation of the impurity level. Furthermore, the adsorption and photocatalytic conversion pathway of NO was explored by in situ DRIFTS, the principal byproducts of photocatalytic oxidation of NO are NO3− and NO2−. This work offers a new perspective to improve the photocatalytic activity by doping mothed for air purification.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143111012","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

Prompt and Thermally Activated Delayed Fluorescence of Quinazoline-Based Derivatives: A Joint Experimental and Theoretical Study 喹唑啉衍生物的提示和热激活延迟荧光：实验和理论联合研究

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-10-01 DOI: 10.1002/cptc.202400259

Maxime Hodée, Tatiana N. Moshkina, Julien Massue, Arnaud Fihey, Thierry Roisnel, Claudine Katan, Emiliya Nosova, Sylvain Achelle

{"title":"Prompt and Thermally Activated Delayed Fluorescence of Quinazoline-Based Derivatives: A Joint Experimental and Theoretical Study","authors":"Maxime Hodée, Tatiana N. Moshkina, Julien Massue, Arnaud Fihey, Thierry Roisnel, Claudine Katan, Emiliya Nosova, Sylvain Achelle","doi":"10.1002/cptc.202400259","DOIUrl":"https://doi.org/10.1002/cptc.202400259","url":null,"abstract":"During the last decade, thermally activated delayed fluorescence has been the topic of intense research due to its great potential for highly efficient all organic light emitting devices. While the quinazoline heterocycle has been used for its electron withdrawing ability in various push-pull dyes, quinazoline derivatives have been rarely considered for TADF emitters. Here we design and synthesize a new series of dyes with phenyl- or methoxy-substituted quinazoline rings combined with 9,9-dimethylacridan, phenoxazine or phenothiazine and either 1,4-phenylene or 2,5-thienylene as linker. Combining optical spectroscopy and theoretical investigations, we demonstrate that delayed fluorescence is observed in the solid state for the phenyl-substituted quinazoline derivatives for which both quasi-equatorial and quasi-axial conformations are predicted to coexist. Calculations further suggest that the reversed intersystem crossing is likely to involve the second triplet state that shows small energy splitting with the first singlet state. These results prompt further investigations of phenyl-substituted quinazoline based dyes for TADF.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cptc.202400259","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exciplex Emission in the POSS Possessing Two Kinds of Luminophores 具有两种发光基团的POSS的异构体发射

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-09-24 DOI: 10.1002/cptc.202400273

Hayato Narikiyo, Taichi Kato, Masayuki Gon, Kazuo Tanaka, Yoshiki Chujo

引用次数: 0