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Главная страница Новости науки Journal of Photochemistry and Photobiology C: Photochemistry Reviews
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ScienceDirect Publication: Journal of Photochemistry and Photobiology C: Photochemistry Reviews
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ScienceDirect Publication: Journal of Photochemistry and Photobiology C: Photochemistry Reviews
  • Corrigendum to “Photochemistry and photo-electrochemistry on synthetic semiconducting diamond” [J. Photochem. Photobiol. C: Photochem. Rev. 31 (2017) 139–152]
    Publication date: December 2017
    Source:Journal of Photochemistry and Photobiology C: Photochemistry Reviews, Volume 33

    Author(s): Daibing Luo, Kazuya Nakata, Akira Fujishima, Shanhu Liu









  • Strategies for development of optogenetic systems and their applications
    Publication date: March 2017
    Source:Journal of Photochemistry and Photobiology C: Photochemistry Reviews, Volume 30

    Author(s): M. Endo, T. Ozawa

    It has become clear that biological processes are highly dynamic and heterogeneous within and among cells. Conventional analytical tools and chemical or genetic manipulations are unsuitable for dissecting the role of their spatiotemporally dynamic nature. Recently, optical control of biomolecular signaling, a technology called “optogenetics,” has gained much attention. The technique has enabled spatial and temporal regulation of specific signaling pathways both in vitro and in vivo. This review presents strategies for optogenetic systems development and application for biological research. Combinations with other technologies and future perspectives are also discussed herein. Although many optogenetic approaches are designed to modulate ion channel conductivity, we mainly examine systems that target other biomolecular reactions such as gene expression, protein translocations, and kinase or receptor signaling pathways.







  • IFC(EDITORIAL BOARD)
    Publication date: June 2018
    Source:Journal of Photochemistry and Photobiology C: Photochemistry Reviews, Volume 35











  • Applied photoelectrocatalysis on the degradation of organic pollutants in wastewaters
    Publication date: June 2017
    Source:Journal of Photochemistry and Photobiology C: Photochemistry Reviews, Volume 31

    Author(s): Sergi Garcia-Segura, Enric Brillas

    A large variety of electrochemical advanced oxidation processes (EAOPs) have been recently developed to remove organic pollutants from wastewaters to avoid their serious health-risk factors from their environmental accumulation and to reuse the treated water for human activities. The effectiveness of EAOPs is based on the in situ production of strong reactive oxygen species (ROS) like hydroxyl radical (OH). Photoelectrocatalysis (PEC) has emerged as a promising powerful EAOP by combining photocatalytic and electrolytic processes. It consists in the promotion of electrons from the valence band to the conduction band of a semiconductor photocatalyst upon light irradiation, with production of positive holes. The fast recombination of the electron/hole pairs formed is avoided in PEC by applying an external bias potential to the photocatalyst that extracts the photogenerated electrons up to the cathode of the electrolytic cell. Organics can be oxidized directly by the holes, OH formed from water oxidation with holes and other ROS produced between the electrons and dissolved O2. This paper presents a general and critical review on the application of PEC to the remediation of wastewaters with organic pollutants. Special attention is made over the different kinds of photocatalysts utilized and preparation methods of the most ubiquitous TiO2 materials. Typical PEC systems and main operation variables that affect the effectiveness of the degradation process are also examined. An exhaustive analysis of the advances obtained on the treatment of dyes, chemicals and pharmaceuticals from synthetic solutions, as well as of real wastewaters, is performed. Finally, research prospects are proposed for the future development of PEC with perspectives to industrial application.







  • Frontiers, opportunities, and challenges in perovskite solar cells: A critical review
    Publication date: June 2018
    Source:Journal of Photochemistry and Photobiology C: Photochemistry Reviews, Volume 35

    Author(s): Mohammed Istafaul Haque Ansari, Ahsanulhaq Qurashi, Mohammad Khaja Nazeeruddin

    The breakthrough discovery of organic-inorganic hybrid perovskite materials for converting solar energy into electrical energy has revolutionized the third generation photovoltaic devices. Within less than half a decade of rigorous research and development in perovskite solar cells, the efficiency is boosted upto 22%. Aforesaid high PCE is accredited to high optical absorption properties, balanced charge transport properties, and longer diffusion lengths of carriers. Two dominant perovskite solar cell architecture has evolved; n-i-p, and p-i-n with mesoporous or planar heterojunction. In planar heterojunction configuration, perovskite light harvester is layered between hole/electron transport layers and the electrodes. The electron and hole transporting films increase charge collection efficiency and reduce recombination at interfaces. In the following review, we present a critical survey of the recent progress in perovskite absorber and charge transport materials that account for the exceptionally higher PCE of perovskite devices. Furthermore, numerous fabrication techniques and device architectures are summarized.







  • The Paternò-Büchi reaction—Mechanisms and application to organic synthesis
    Publication date: December 2017
    Source:Journal of Photochemistry and Photobiology C: Photochemistry Reviews, Volume 33

    Author(s): Maxime Fréneau, Norbert Hoffmann

    The [2+2] photocycloaddition between an electronically excited carbonyl compound and an alkene leading to oxetanes (Paternò-Büchi reaction) is one of the most investigated organic photochemical reaction. Regio-, stereo- and site selectivities are discussed as a consequence of the reaction mechanism. Spin multiplicity and electron transfer have a significant impact on the outcome of the reaction. Typical carbonyl and alkene reaction partners are presented indicating scope and limitation of the reaction. The Paternò-Büchi reaction possesses particular interest for being applied to organic synthesis, considering the difficulty for non-photochemical reactions to obtain oxetanes, with or without stereoselectivity. Mechanistic details are particularly focused. It has been applied as key step in various multi-step syntheses.

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  • Reaction dynamics of excited radical ions revealed by femtosecond laser flash photolysis
    Publication date: June 2018
    Source:Journal of Photochemistry and Photobiology C: Photochemistry Reviews, Volume 35

    Author(s): Mamoru Fujitsuka, Tetsuro Majima

    Herein, we review studies on the dynamics of excited radical ions. The enhanced reactivities of excited radical ions are recognized by many researchers based on product analysis studies conducted around 1980. For cases involving fluorescent excited radical ions, lifetime measurements provide information on excited states, and they sometimes lead to confusion owing to emissive byproducts resulting from their higher reactivities. Nanosecond laser flash photolysis studies provide evidence of the reactions of excited radical ions, and analyses of their kinetics reveal properties such as their excited-state lifetimes despite an indirect manner. Recent femtosecond laser flash photolysis studies provide detailed pictures of excited radical ions, though such studies are few. Furthermore, studies on dyad or triad systems, including excited radical ions, show electron transfer dynamics and disclose characteristics of excited radical ions that differ from those in neutral states. Larger electronic coupling and smaller dumping factor are reported as important characteristics of electron transfer systems of excited radical ions. These systematic studies on excited radical ions demonstrate their suitability for applications.

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  • Optical characterization of chiral plasmonic nanostructures
    Publication date: September 2017
    Source:Journal of Photochemistry and Photobiology C: Photochemistry Reviews, Volume 32

    Author(s): Kyle W. Smith, Stephan Link, Wei-Shun Chang

    Chiral plasmonic nanomaterials can have circular dichroism and optical rotatory dispersion effects orders of magnitude larger than those observed in ordinary chiral molecules. Understanding this fascinating class of materials has proved challenging and has motivated several research groups to develop entirely new experimental techniques for characterizing chirality driven optical properties. In this review, we first describe the classical method of circular dichroism which measures linear, far-field responses from an ensemble population. We then go on to describe several of the more recently developed methods to probe chiral nanostructures as they expand into the domains of non-linear, near-field, and single particle measurements including spatially and spectrally resolved techniques.

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  • Recent development on MoS2-based photocatalysis: A review
    Publication date: June 2018
    Source:Journal of Photochemistry and Photobiology C: Photochemistry Reviews, Volume 35

    Author(s): Zizhen Li, Xiangchao Meng, Zisheng Zhang

    MoS2-based photocatalysts attract wide attention as they possess a suitable band gap for visible-light harvesting, making it a promising earth-abundant photocatalyst for hydrogen production, environmental remediation, and photosynthesis. However, the rapid recombination of photogenerated electron-hole pairs, limited quantity of active edge sites, and difficult photocatalyst separation and recycling hinder the practical application of this material. In this review, recent development of MoS2-based photocatalysts in various photocatalytic applications is summarized. In addition, possible approaches to enhance photocatalytic activity and separate photocatalysts from reaction media are discussed to provide a future direction in highly efficient photocatalyst design.

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  • Photochemistry and photo-electrochemistry on synthetic semiconducting diamond
    Publication date: June 2017
    Source:Journal of Photochemistry and Photobiology C: Photochemistry Reviews, Volume 31

    Author(s): Daibing Luo, Kazuya Nakata, Akira Fujishima, Shanhu Liu

    In this short review, we discuss the photo-relative properties, photochemical and photo-electrochemical applications of synthetic diamond materials. Synthetic diamond with semiconductive nature owns outstanding ideal properties of physics and chemistry, including high hardness, a wide bandgap, very high carrier mobility, excellent chemical stability, and inherent biocompatibility, which makes diamond promising candidate used in photochemistry and photo-electrochemistry. Diamond materials show p-type or n-type properties via doping of certain elements, which can be utilized in photo-involved chemistry for photo-synthesis, photo-catalysis, solar cells, photo-electronics, and surface modification.







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