ChemPhotoChem最新文献_第10页

Micelle Assisted Multi-Step Energy Relay in a Blend of Fluorophores as a Potential Light Harvesting System 胶束辅助多步能量继电器混合荧光团作为一个潜在的光收集系统

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-01-16 DOI: 10.1002/cptc.202400322

Firdaus Ahmad Ahanger, Ayaz Ahmad Manhas, Umar Nabi Tak, Gousia, Saima Sidiq, Showkat Rashid, Mohd Sajid Lone, Aijaz Ahmad Dar

{"title":"Micelle Assisted Multi-Step Energy Relay in a Blend of Fluorophores as a Potential Light Harvesting System","authors":"Firdaus Ahmad Ahanger, Ayaz Ahmad Manhas, Umar Nabi Tak,  Gousia, Saima Sidiq, Showkat Rashid, Mohd Sajid Lone, Aijaz Ahmad Dar","doi":"10.1002/cptc.202400322","DOIUrl":"10.1002/cptc.202400322","url":null,"abstract":"We report a pH-responsive system comprising three pH responsive fluorophores, 7-Hydroxy coumarin (7HC), Fluorescein (Flu), and Rhodamine B (RhB) wherein an efficient two-step Förster Resonance Energy Transfer (FRET) process is facilitated. Upon excitation of 7HC, energy is sequentially transferred from 7HC (primary donor) to Flu (primary acceptor) and then to RhB (secondary acceptor). The FRET processes were studied at pH 7 and 12 in the presence of surfactants: cationic Tetradecyltrimethylammonium bromide (TTAB), anionic Sodium Dodecyl Sulfate (SDS), and neutral polyoxyethylene[4] lauryl ether (Brij 30). Differences in FRET efficiencies across surfactant media were interpreted by analyzing the solubilization sites of the fluorophores using UV-Visible and fluorescence spectroscopy. The pH-dependence of the FRET acted as an ON-OFF switch, showing higher efficiency in alkaline media. Among the surfactant systems, the two-step FRET operated most efficiently in alkaline TTAB micelles, with efficiencies reaching up to 50 % for 7HC to Flu (FRET-1), 30 % for Flu to RhB (FRET-2), and 23 % for the overall transfer. At a donor-to-acceptor ratio of 1000/80/80, energy transfer efficiencies touched 74 % for FRET-1 and 84 % for FRET-2. This highlights TTAB micelles as promising scaffolds for efficient multi-step FRET-based artificial light-harvesting systems.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801745","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

Identifying Key Physical Properties of Simple Organic Drop Cast Films that give Visible to Ultraviolet Light Up-Conversion 确定可见光到紫外光上转换的简单有机滴铸膜的关键物理性质

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-01-16 DOI: 10.1002/cptc.202400341

Francesco Lodola, Hector Miranda-Salinas, Suman Kuila, Andrew Danos, Andrew P. Monkman

{"title":"Identifying Key Physical Properties of Simple Organic Drop Cast Films that give Visible to Ultraviolet Light Up-Conversion","authors":"Francesco Lodola, Hector Miranda-Salinas, Suman Kuila, Andrew Danos, Andrew P. Monkman","doi":"10.1002/cptc.202400341","DOIUrl":"10.1002/cptc.202400341","url":null,"abstract":"We demonstrate UV-emitting films of 2,5-diphenyloxazole (PPO) sensitised by 3,3′-carbonylbis(7-diethylaminocoumarin) (CBDAC), prepared by simple drop casting with rapid solvent evaporation, giving up-converted emission even at low excitation intensities. The mechanisms of up-conversion and triplet quenching in these films has been studied through time-resolved and steady-state spectroscopy. The CBDAC sensitizer aggregates strongly even at low concentrations, with CBDAC phosphorescence being observed in all films, indicating that many triplet excitons do not transfer to the surrounding PPO annihilator. Nonetheless, at very low sensitiser concentrations (1 : 40000 CBDAC : PPO), up-converted PPO UV emission is observed at room temperature which is critically dependent on the film formation conditions. Only in films cast onto substrates held at 60 °C is dominant TTA-UC observed. Comparing to similar sensitised films of TIPS-naphthalene, which are TTA-inactive, we deduce that π-stacking of the PPO, prevented by the TIPS side groups in the TIPS-naphthalene films is crucial for efficient triplet diffusion and up-conversion.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 5","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cptc.202400341","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939437","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

Pnictogen-Bridged Sulfoximines: Effects of Element and N-Substituent on Excited-State Dynamics 烟素桥接亚砜胺：元素和n取代基对激发态动力学的影响

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-01-14 DOI: 10.1002/cptc.202400336

Koki Mizuta, Haruki Shimoji, Toshiki Fujii, Shunsuke Yamamoto, Hideo Ohkita, Kensuke Naka, Hiroaki Imoto

引用次数: 0

Oxygen Atom Replacement in Coumarins: A Strategy to Tune Spectral Properties 香豆素中的氧原子置换：一种调整光谱特性的策略

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-01-10 DOI: 10.1002/cptc.202400362

Karin Schniererová, Jakub Orság, Martin Putala, Henrieta Stankovičová

引用次数: 0

All-Optical Spatial Self-Phase and Cross Phase Modulation Using an NLO Active Pyrylium Dye towards an Optical OR Gate 利用NLO活性吡啶染料对光或门进行全光空间自相位和交叉相位调制

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-01-10 DOI: 10.1002/cptc.202400334

Safna Saif, Lekshmi Lekshmanan, Karthika Sankar, Titu Thomas, Saju Pillai, Ayyappanpillai Ajayaghosh, Priya Rose Thankamani

引用次数: 0

Front Cover: Organohalogenochromism: Toward Colorimetric Detection of Volatile Organic Halogen Compounds (ChemPhotoChem 1/2025) 封面：有机卤素变色：迈向挥发性有机卤素化合物的比色检测（ChemPhotoChem 1/2025）

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-01-10 DOI: 10.1002/cptc.202580101

Kumpei Kozuka, Keiichi Imato, Yousuke Ooyama

引用次数: 0

Beyond the Horizon: Exploration of Perovskite Solar Cells in Extreme Environments 超越地平线：探索极端环境中的 Perovskite 太阳能电池

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-01-08 DOI: 10.1002/cptc.202400337

Fengyuan Li, Yang Yang, Dilnaz Kadyrma, Anar Dosmukhambetova, Prof. Zhe Liu, Prof. Zhanar Kalkozova, Prof. Ruihao Chen, Prof. Hongqiang Wang

{"title":"Beyond the Horizon: Exploration of Perovskite Solar Cells in Extreme Environments","authors":"Fengyuan Li, Yang Yang, Dilnaz Kadyrma, Anar Dosmukhambetova, Prof. Zhe Liu, Prof. Zhanar Kalkozova, Prof. Ruihao Chen, Prof. Hongqiang Wang","doi":"10.1002/cptc.202400337","DOIUrl":"10.1002/cptc.202400337","url":null,"abstract":"Current research on perovskite solar cells (PSCs) predominantly targets terrestrial applications, with limited studies in extreme environments. Deploying PSCs in space and underwater necessitates meeting stringent performance and stability criteria. For space, PSCs must withstand high radiation and temperature extremes, while underwater, light intensity attenuation, spectrum changes, and varying water quality can degrade PSCs performance. Inspiringly, PSCs offer several advantages, including being lightweight, cost-effective, easy to manufacture, and having adjustable bandgaps. These features make them more promising for applications in extreme conditions versus other photovoltaic (PV) devices. To further advance research on PSCs in extreme environments, this concept briefly describes the background of PSC applications in extreme conditions, summarizes the environmental characteristics and their impacts on the devices in both space and underwater settings, and comprehensively reviews the latest advancements in these fields. Finally, potential strategies for ensuring the long-term stable operation of PSCs under extreme stressors are proposed.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801542","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

Redox Dependent Color Modulating Copper(I) Complex for Flexible Electrochromic Device 用于柔性电致变色器件的氧化还原依赖性颜色调制铜(I)配合物

IF 3 4区化学

ChemPhotoChem Pub Date : 2025-01-08 DOI: 10.1002/cptc.202400354

Laxman Sarjerao Kharabe, Bhumika Sahu, Shivendu Mishra, Rajesh Kumar, Abhinav Raghuvanshi

{"title":"Redox Dependent Color Modulating Copper(I) Complex for Flexible Electrochromic Device","authors":"Laxman Sarjerao Kharabe, Bhumika Sahu, Shivendu Mishra, Rajesh Kumar, Abhinav Raghuvanshi","doi":"10.1002/cptc.202400354","DOIUrl":"10.1002/cptc.202400354","url":null,"abstract":"Pursuing the development of eco-friendly, cost-effective and flexible materials that offer high-color contrast and low power consumption is a promising approach for advancing the next-generation optoelectronic devices. Herein, we report the synthesis of a heteroleptic copper(I) complex [Xantphos-Cu-cmdf]PF6 (C1), in high yield, using Xantphos and cmdf ligands. The complex has high thermal stability and displays low-energy absorption between 360 and 470 nm due to the metal-to-ligand charge transfer (MLCT) transition. The electrochemical analysis confirmed the electrochromic properties of C1. A bilayer electrochromic device (ECD) incorporating P3HT and C1 demonstrated excellent color modulation (45 %) and rapid switching times (less than one second). Furthermore, the flexible ECD utilizing C1 showed superior performance compared to its solid-state counterpart, with high efficiency (~200 cm2/C), color modulation (69 %) and sub-second switching times. The high coloration efficiency and fast switching time of the ECDs developed from stable and cost-effective Cu(I) complex, C1, make it a promising candidate for real-world electrochromic applications.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801543","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

Design, Synthesis, and Chemical Characterization of Pyrene-Substituted BODIPY Dyes 芘取代二聚吡啶染料的设计、合成及化学表征

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-12-23 DOI: 10.1002/cptc.202400365

Baybars Köksoy

{"title":"Design, Synthesis, and Chemical Characterization of Pyrene-Substituted BODIPY Dyes","authors":"Baybars Köksoy","doi":"10.1002/cptc.202400365","DOIUrl":"10.1002/cptc.202400365","url":null,"abstract":"In this study, novel di- and tetra-pyrenylated BODIPY (boron-dipyrromethene) dyes (Bdpy2 and Bdpy4) were synthesized via the Suzuki-Miyaura cross-coupling reaction, incorporating pyrene units at specific positions on the BODIPY core. Comprehensive structural characterization was achieved through FT-IR, UV-Vis, MALDI-mass spectrometry, and NMR techniques. The optical properties were extensively analyzed in different solvents, revealing Q-band absorption maxima at 531 nm for Bdpy2 and 533 nm for Bdpy4 in THF, along with red-shifted emission peaks due to increased π–π stacking interactions. Bdpy4 displayed a fluorescence quantum yield of 0.68 and a fluorescence lifetime of 3.88 ns, surpassing Bdpy2′s values of 0.61 and 3.44 ns, respectively. These improved values in Bdpy4 highlight the enhanced energy transfer efficiency provided by the additional pyrene groups. Theoretical TD-DFT calculations supported the experimental findings, indicating effective energy transfer from pyrene to the BODIPY core. These findings suggest that the high fluorescence efficiency and extended lifetimes of pyrenylated BODIPY derivatives make them promising candidates for optoelectronic applications, including bioimaging and energy harvesting.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801832","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

Visible-Light-Induced Tandem Cyclization of 1,7-Enynes to Access Phenanthridin-6(5H)-Ones Using a Polydimethylsiloxane (PDMS) Based Microreactor 基于聚二甲基硅氧烷（PDMS）微反应器的1,7-炔的可见光诱导串联环化制备菲那啶-6(5H)- 1

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-12-23 DOI: 10.1002/cptc.202400332

Dharavath Ravi, Vadla Shiva Prasad, Vadithya Ranga Rao, Silari Mohana Krishna, Chelukalapally Anil Kumar, Biswajit Saha, Praveen Reddy Adiyala

引用次数: 0