Journal of Photochemistry and Photobiology最新文献_第5页

Anionic clay surface facilitates electron transfer between an excited donor encapsulated within a cationic capsule and a cationic electron acceptor 阴离子粘土表面促进了封装在阳离子胶囊内的受激供体和阳离子电子受体之间的电子转移

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-10-01 DOI: 10.1016/j.jpap.2023.100204

Natsuki Morita , A. Mohan Raj , Takuya Fujimura , Tetsuya Shimada , Vaidhyanathan Ramamurthy , Shinsuke Takagi

{"title":"Anionic clay surface facilitates electron transfer between an excited donor encapsulated within a cationic capsule and a cationic electron acceptor","authors":"Natsuki Morita , A. Mohan Raj , Takuya Fujimura , Tetsuya Shimada , Vaidhyanathan Ramamurthy , Shinsuke Takagi","doi":"10.1016/j.jpap.2023.100204","DOIUrl":"10.1016/j.jpap.2023.100204","url":null,"abstract":"<div>Fluorescence quenching of an excited guest encapsulated within a cationic host by a cationic molecule was examined on an anionic inorganic surface. Repulsion between the host and the quencher was overcome by adsorbing both an anionic surface. Dimethyl stilbene (DMS), octa amine (OAm216+), viologen derivatives (VD2+) and saponite are used as guest, cationic capsule, cationic electron acceptor and anionic inorganic surface, respectively. The fluorescence behavior of DMS within OAm216+ (denoted as DMS@OAm216+) was observed by steady-state and time-resolved fluorescence measurements. As a result of electron transfer the fluorescence of DMS@OAm216+ was quenched by VD2+ under the presence of saponite, while no quenching was observed in the absence of saponite. Those results indicate that the dynamic electron transfer between DMS@OAm216+ and VD2+ which are electrostatically repulsive, can be observed in the (DMS@OAm216+)-VD2+-saponite triad supramolecular system where the two cationic systems are brought closer by the anionic clay sheet.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"17 ","pages":"Article 100204"},"PeriodicalIF":3.261,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666469023000453/pdfft?md5=b854b3671fbb856911fab5097706ed8c&pid=1-s2.0-S2666469023000453-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89692356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent progress in photocatalytic reactions involving the excitation of electron-primed catalysts 电子引发催化剂的光催化反应研究进展

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-10-01 DOI: 10.1016/j.jpap.2023.100205

Takashi Koike

{"title":"Recent progress in photocatalytic reactions involving the excitation of electron-primed catalysts","authors":"Takashi Koike","doi":"10.1016/j.jpap.2023.100205","DOIUrl":"10.1016/j.jpap.2023.100205","url":null,"abstract":"<div>Open-shell species are attracting significant attention owing to their unique physicochemical properties and highly reactive characteristics. Over the past decade, photoredox catalysis (PRC) has emerged as a powerful strategy for radical reactions. Recently, photocatalysis involving the excitation of open-shell catalytic species generated from in situ photo- or electrochemical electron transfer has also attracted significant attention in synthetic organic chemistry. These systems can achieve redox potentials that are difficult to achieve in the ground state of the photocatalyst or by simple excitation of the photocatalyst. In this review article, we discuss recent advancements in highly reducing organic photocatalyst (OPC) systems involving the photoexcitation of electron-primed catalytic species, which can be engaged in photochemically (conPET: consecutive photoinduced electron transfer) or electrochemically (e-PRC: electrochemically mediated photoredox catalysis). We believe that expanding the redox windows of catalysts to activate inert substrates from the viewpoint of redox potential will improve rational reaction design, and the use of sophisticated OPC systems will be promising for achieving elusive molecular transformations.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"17 ","pages":"Article 100205"},"PeriodicalIF":3.261,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666469023000465/pdfft?md5=c0b100517e24e17462e3b5d883adf786&pid=1-s2.0-S2666469023000465-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89378025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deciphering mechanism of excited state reactivity by spectroscopic methods 用光谱方法破译激发态反应性的机理

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-09-16 DOI: 10.1016/j.jpap.2023.100207

Sarvar Aminovich Rakhimov, Malcolm D.E. Forbes , Jayaraman Sivaguru

引用次数: 0

Photoinduced radical generation and trapping by acrylonitrile of N-Boc secondary amine and N-Boc N-methyl α-amino acid ester at α-position using two-molecule photoredox catalysts 双分子光氧化还原催化剂光诱导N-Boc仲胺和N-Boc n -甲基α-氨基酸酯在α-位置的生成和被丙烯腈捕获

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-09-14 DOI: 10.1016/j.jpap.2023.100208

Shoki Nagaya , Hibiki Miyagawa , Ryoga Hashimoto , Toshiki Furutani , Mugen Yamawaki , Hirotsugu Suzuki , Toshio Morita , Yasuharu Yoshimi

引用次数: 0

Excited-state tris(pentafluorophenyl)borane as a strong single-electron oxidant: Photophysical properties and catalysis 激发态三(五氟苯基)硼烷作为强单电子氧化剂:光物理性质和催化

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-08-29 DOI: 10.1016/j.jpap.2023.100206

Yoshitaka Aramaki, Yuki Uchida, Ryo Ishikawa, Takashi Ooi

{"title":"Excited-state tris(pentafluorophenyl)borane as a strong single-electron oxidant: Photophysical properties and catalysis","authors":"Yoshitaka Aramaki, Yuki Uchida, Ryo Ishikawa, Takashi Ooi","doi":"10.1016/j.jpap.2023.100206","DOIUrl":"10.1016/j.jpap.2023.100206","url":null,"abstract":"<div>The photophysical properties and photocatalysis of tris(pentafluorophenyl)borane [B(C6F5)3], known as a strong Lewis acid, were revealed. The excited-state B(C6F5)3 exerts single-electron oxidation capability with an oxidation potential (Ered* = 2.02 V vs SCE) close to those of electronically unbiased toluene derivatives (Eox = 2.01 to 2.29 V). This property was experimentally proven by the direct observation of the radical cation of the toluene dimer by the transient absorption spectroscopy of a mixture of B(C6F5)3 and toluene. In cooperation with a suitable Brønsted base catalyst, B(C6F5)3 catalytically generated benzylic radicals from toluene derivatives under photoirradiation for subsequent carbon-carbon bond-forming reactions.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"18 ","pages":"Article 100206"},"PeriodicalIF":3.261,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666469023000477/pdfft?md5=1018f8b2d2ddae786dbd516b8204cade&pid=1-s2.0-S2666469023000477-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78590474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biochemical reactions remote-sensitized by excitons propagating across macroscopic distances along biological fibers: Isomerization of 11-cis-retinal 由激子沿生物纤维传播的宏观距离远致敏的生化反应:11-顺式视网膜的异构化

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-08-07 DOI: 10.1016/j.jpap.2023.100202

Igor Khmelinskii , Vladimir Makarov

{"title":"Biochemical reactions remote-sensitized by excitons propagating across macroscopic distances along biological fibers: Isomerization of 11-cis-retinal","authors":"Igor Khmelinskii , Vladimir Makarov","doi":"10.1016/j.jpap.2023.100202","DOIUrl":"https://doi.org/10.1016/j.jpap.2023.100202","url":null,"abstract":"<div>Presently we report a second example of a biochemical reaction sensitized remotely by excitons (electronic excited states) efficiently transferred along intermediate filaments (IFs) over macroscopic distances. IFs are excellent conductors of energy in the form of excitons, with the efficiency of ca. 0.53 reported in vitro. Excitons were generated by visible light and propagated along Müller cell (MC) intermediate filaments, about 100 μm long. These experiments used a capillary matrix filled by MC IFs extracted from porcine retina. Excitons induced efficient isomerization of 11-cis- to all-trans-retinal, with the reaction quantum yield φcis/trans = 0.347 obtained for 11-cis-retinal concentration of 1.0 × 10−3 M (0.284 g/L) using 546 nm light at 6.87 mW/cm2 power density. Exciton quantum yield φexc at 546 nm was also measured in function of radiation power density, with nonlinearity indicative of biphotonic processes. This is the first case of biphotonic processes occurring at such low light intensities with steady-state illumination. The present results support quantum mechanism of high-contrast vision of vertebrate eyes.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"17 ","pages":"Article 100202"},"PeriodicalIF":3.261,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3207977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Implications of visible light and means of photoprotection 可见光的意义和光防护方法

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-08-07 DOI: 10.1016/j.jpap.2023.100203

Brittany Lane , Henry W. Lim , Iltefat H. Hamzavi , Tasneem F. Mohammad , Indermeet Kohli

引用次数: 0

Application of bioinspired W/WO3 electrodes electrochemically constructed on microbial biofilm for the disinfection of dialysate contaminated by Candida parapsilosis 微生物生物膜电化学构建的仿生W/WO3电极在副假丝酵母污染透析液消毒中的应用

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-08-01 DOI: 10.1016/j.jpap.2023.100196

Barbara A. Souza , Maria José S.M. Giannini , Monica Yonashiro , Maria Valnice Boldrin Zanoni

{"title":"Application of bioinspired W/WO3 electrodes electrochemically constructed on microbial biofilm for the disinfection of dialysate contaminated by Candida parapsilosis","authors":"Barbara A. Souza , Maria José S.M. Giannini , Monica Yonashiro , Maria Valnice Boldrin Zanoni","doi":"10.1016/j.jpap.2023.100196","DOIUrl":"https://doi.org/10.1016/j.jpap.2023.100196","url":null,"abstract":"<div>The present work investigates the disinfection of dialysate water used in hemodialysis through the application of bioinspired W/WO3 electrodes constructed on microbial biofilm from C. parapsilosis by electrochemical anodization. The bioinspired electrode was photoactivated by UV/Vis or visible irradiation, and the photocurrent was found to be at least twice higher than that obtained for nanoporous W/WO3 electrode in the dialysate water. Under optimized conditions, the photo-electrocatalytic analysis conducted on the bioinspired electrode at Eapp = 1.5 V and under UV/Vis irradiation led to complete fungi inactivation (5 min) and up to 70% of total organic carbon removal monitored during cell lysis after 120 min of treatment. The results show the bioinspired electrode maintains the structural print of the fungi and works as fungus recognition material. The proposed electrode is also found to exhibit higher surface area, which improves adsorption of microorganisms, leading to faster and more efficient degradation compared to nanoporous W/WO3 electrode, with a 30% increase in the degradation of organic matter present in the medium. The findings show that the bioinspired electrode has outstanding advantages when compared with other materials investigated; these advantages include controlled morphology, good reproducibility, higher adsorption on the electrode surface, and higher efficiency in the disinfection of C. parapsilosis, an agent of several cases of contamination in dialysate.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"16 ","pages":"Article 100196"},"PeriodicalIF":3.261,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3457198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Triphenylimidazole substituted D-π-D porphyrin based dopant-free hole transport materials for perovskite solar cells 三苯基咪唑取代D-π-D卟啉基无掺杂空穴输运材料用于钙钛矿太阳能电池

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-08-01 DOI: 10.1016/j.jpap.2023.100188

Koteshwar Devulapally , Towhid H Chowdhury , Yulu He , Manne Naga Rajesh , Seelam Prasanthkumar , Ashraful Islam , Lingamallu Giribabu

{"title":"Triphenylimidazole substituted D-π-D porphyrin based dopant-free hole transport materials for perovskite solar cells","authors":"Koteshwar Devulapally , Towhid H Chowdhury , Yulu He , Manne Naga Rajesh , Seelam Prasanthkumar , Ashraful Islam , Lingamallu Giribabu","doi":"10.1016/j.jpap.2023.100188","DOIUrl":"https://doi.org/10.1016/j.jpap.2023.100188","url":null,"abstract":"<div>Hole-transport materials (HTMs) contribute an important function in perovskite solar cells (PSCs) for achieving favourable photovoltaic performance with durability. In this work, we designed and synthesized a series of porphyrin based hydrophobic HTMs based on donor-π-donor (D-π-D) tactic in which triphenylimidazole as donor and either free-base porphyrin (H2LD) or metalloporphyrin (Cu, CuLD or Zn, ZnLD) as π-spacer for PSCs. All three HTMs were characterized by a variety of spectroscopic and electrochemical methods. Optical and electrochemical properties propose that the highest occupied molecular orbital (HOMO) energy levels were healthily aligned with the valence band of MAPbI3 perovskite. Among these HTMs, CuLD exhibited higher hole mobility of 7.39 × 10-5 cm2V-1s-1, when compared to ZnLD 5.77 × 10-5 cm2V-1s-1, and H2LD 2.7 × 10-5 cm2V-1s-1. We fabricated PSCs with these HTMs and among them the CuLD based PSCs showed highest power conversion efficiency of 12.44%. The better PCE for the PSCs fabricated with CuLD could be attributed to the higher conductivity and better hole mobility which could be correlated to the better film formation.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"16 ","pages":"Article 100188"},"PeriodicalIF":3.261,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3031863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

OH−/H+ dual-ion energy assisted electricity effective photoelectrochemical water splitting OH−/H+双离子能量辅助电有效光电化学水分解

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-08-01 DOI: 10.1016/j.jpap.2023.100190

Soumodip Sur, Ritwik Mondal, Musthafa Ottakam Thotiyl

{"title":"OH−/H+ dual-ion energy assisted electricity effective photoelectrochemical water splitting","authors":"Soumodip Sur, Ritwik Mondal, Musthafa Ottakam Thotiyl","doi":"10.1016/j.jpap.2023.100190","DOIUrl":"https://doi.org/10.1016/j.jpap.2023.100190","url":null,"abstract":"<div>Photoelectrochemical (PEC) water splitting is an emerging technology to store the solar energy in the chemical bonds of molecular hydrogen. Among several photo electrodes used for PEC water splitting, α-Fe2O3 is a promising material due to its suitable bandgap, chemical stability, and abundance. Despite these, the position of its conduction band does not allow spontaneous movement of photo-generated electrons to cause the water reduction. This demands the application of a minimum electrical bias of ∼1.5 V vs. SHE to increase the energy of the conduction band such that it will be energetically above the H2O/H2 redox level. We show that by utilizing the energy of neutralization, the minimum electrical voltage required for PEC water splitting can be brought down to ∼0.8 V. By employing an OH−/H+dual-ion configuration. OH−/H+dual-ion assisted PEC water splitting required only 0.95 V to produce a current density of 10 mA/cm2, and for achieving the same rate in a conventional symmetric ion configuration, at least a doubling of the applied electrical bias (∼1.8 V) is required.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"16 ","pages":"Article 100190"},"PeriodicalIF":3.261,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3274361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0