English  |  正體中文  |  简体中文  |  Items with full text/Total items : 74010/74010 (100%)
Visitors : 24044531      Online Users : 453
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU 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://ir.lib.ncu.edu.tw/handle/987654321/5920

    Title: 非結晶性紅色螢光發射團分子之合成與其光電性質之探討;Synthesis and Electrical/Optical Characterization of Amorphorous Red Fluorophores
    Authors: 吳韋菁;Wei-Ching Wu
    Contributors: 化學研究所
    Keywords: 有機電機發光材料;紅色螢光;red oled;red fluorescent
    Date: 2003-07-14
    Issue Date: 2009-09-22 10:10:23 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: I 非結晶性紅色螢光發射團分子之合成與其光電性質之探討 摘要 本論文以maleimide 和pyrazine 為主體(結構如下圖所示),設計 合成一系列具有推、拉電子結構的螢光放射團分子,希望藉此改變分 子之螢光波長,以達到飽和紅光。再配合鄰取代位置接上芳香環,使 化合物因芳香環所造成的立體障礙,而無法共平面。這樣在固體時, 將有助於抑制分子的結晶規律排列,因此,化合物有機會是非結晶性 的。 我們藉由紫外/可見光光譜儀和螢光儀,來測量化合物之吸收、 螢光光譜,藉此得知化合物之光色。使用循環電位儀來測量化合物之 氧化還原電位,並藉此估算化合物之HOMO 和LUMO 值。藉由熱重 量分析儀和微差熱掃瞄卡計,測量化合物之有關玻璃轉移溫度、結晶 溫度和熔化溫度之結晶性與熱穩定性。 II Synthesis and electrical/optical characterization of Amorphorous Red Fluorophores Abstract Maleimide and pyrazine-based fluorophore (structure shown in blow) with donor-acceptor substituents were designed and synthesized for tuning fluorescence wavelength into saturated red region. We utilized the nonplanar conformation that was generated by ortho-substituted aromatic ring structures for enhancing the amorphous property of the fluorophores. The absorption and fluorescence of the fluorophores were studied by UV/Visible and fluorescence spectroscopic methods. HOMO and LUMO energy levels were derived from cyclic voltametry (CV) data. The glass transtition temperature(Tg), crystal temperature(Tc) and melting point(Tm) were determined by DSC (differential scanning calorimeter) and TGA (thermogravinetric analyzer), respectively., to estimate the amorphous property and thermal stability of the fluorophores.
    Appears in Collections:[化學研究所] 博碩士論文

    Files in This Item:

    File SizeFormat

    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明