淡江大學機構典藏:Item 987654321/113097
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 62830/95882 (66%)
造訪人次 : 4045740      線上人數 : 901
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧：
  • 您可在西文檢索詞彙前後加上"雙引號"，以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋，建議至進階搜尋限定作者欄位，可獲得較完整資料
    •  進階搜尋


    請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/113097


    題名: Molecular Design of Polymer Heterojunctions for Efficient Solar–Hydrogen Conversion
    作者: Jie Chen;Chung‐Li Dong;Daming Zhao;Yu‐Cheng Huang;Xixi Wang;Leith Samad;Lianna Dang;Melinda Shearer;Shaohua Shen;Liejin Guo
    關鍵詞: graphitic carbon nitride;molecular design;polyfluorene family polymers;polymer heterojunctions;solar–hydrogen conversion
    日期: 2017-03-29
    上傳時間: 2018-04-14 12:10:16 (UTC+8)
    出版者: Wiley
    摘要: 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.
    關聯: Advanced Materials 29(21), 1606198
    DOI: 10.1002/adma.201606198
    顯示於類別:[物理學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    index.html0KbHTML75檢視/開啟
    Molecular Design of Polymer Heterojunctions for Efficient Solar–Hydrogen Conversion.pdf2435KbAdobe PDF0檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

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