English  |  正體中文  |  简体中文  |  Items with full text/Total items : 57042/90725 (63%)
Visitors : 12440059      Online Users : 72
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/113097


    Title: Molecular Design of Polymer Heterojunctions for Efficient Solar–Hydrogen Conversion
    Authors: Jie Chen;Chung‐Li Dong;Daming Zhao;Yu‐Cheng Huang;Xixi Wang;Leith Samad;Lianna Dang;Melinda Shearer;Shaohua Shen;Liejin Guo
    Keywords: graphitic carbon nitride;molecular design;polyfluorene family polymers;polymer heterojunctions;solar–hydrogen conversion
    Date: 2017-03-29
    Issue Date: 2018-04-14 12:10:16 (UTC+8)
    Publisher: Wiley
    Abstract: Semiconducting photocatalytic solar–hydrogen conversion (SHC) from water is a great challenge for renewable fuel production. Organic semiconductors hold great promise for SHC in an economical and environmentally benign manner. However, organic semiconductors available for SHC are scarce and less efficient than most inorganic ones, largely due to their intrinsic Frenkel excitons with high binding energy. In this study the authors report polymer heterojunction (PHJ) photocatalysts consisting of polyfluorene family polymers and graphitic carbon nitride (g‐C3N4) for efficient SHC. A molecular design strategy is executed to further promote the exciton dissociation or light harvesting ability of these PHJs via alternative approaches. It is revealed that copolymerizing electron‐donating carbazole unit into the poly(9,9‐dioctylfluorene) backbone promotes exciton dissociation within the poly(N‐decanyl‐2,7‐carbazole‐alt‐9,9‐dioctylfluorene) (PCzF)/g‐C3N4 PHJ, achieving an enhanced apparent quantum yield (AQY) of 27% at 440 nm over PCzF/g‐C3N4. Alternatively, copolymerizing electron‐accepting benzothiadiazole unit extended the visible light response of the obtained poly(9,9‐dioctylfluorene‐alt‐benzothiadiazole)/g‐C3N4 PHJ, leading to an AQY of 13% at 500 nm. The present study highlights that constructing PHJs and adapting a rational molecular design of PHJs are effective strategies to exploit more of the potential of organic semiconductors for efficient solar energy conversion.
    Relation: Advanced Materials 29(21), 1606198
    DOI: 10.1002/adma.201606198
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML13View/Open
    Molecular Design of Polymer Heterojunctions for Efficient Solar–Hydrogen Conversion.pdf2435KbAdobe PDF0View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback