English  |  正體中文  |  简体中文  |  Items with full text/Total items : 54367/62174 (87%)
Visitors : 14639671      Online Users : 51
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTHU 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
    National Tsing Hua University Institutional Repository > 工學院  > 化學工程學系 > 期刊論文 >  Synthesis and macroscopic second-order nonlinear optical properties of poly(ether imide)s containing a novel two-dimensional carbazole chromophore with nitro acceptors


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/39807


    Title: Synthesis and macroscopic second-order nonlinear optical properties of poly(ether imide)s containing a novel two-dimensional carbazole chromophore with nitro acceptors
    Authors: Wen-Jang Kuo;Ging-Ho Hsiue;Ru-Jong Jeng
    教師: 薛敬和
    Date: 2002
    Publisher: Royal Society of Chemistry
    Relation: Journal of Materials Chemistry, Royal Society of Chemistry, Volume 12, Issue 4, 2002, Pages 868 - 878
    Keywords: NLO
    DEA
    multifunctional characteristics
    Abstract: ©2002 RSC - Taking advantage of the multifunctional characteristics of carbazole along with rational molecular design, a two-dimensional carbazole chromophore with strong nitro acceptors was synthesized by a facile synthetic route. A first molecular hyperpolarizability of 163 × 10–30 esu was acquired through solvatochromic methods. By doping of the chromophores into an organosoluble poly(ether imide), a series of guest–host NLO polymers were acquired. A high doping level up to 20 wt% was obtained without observing aggregation of NLO chromophores. The compatibility between chromophore and poly(ether imide) was also investigated by SEM and extraction experiments. In terms of compatibility, the molecular weight distribution of the polymer plays an important role. The second harmonic coefficients (d33) for the NLO-active poly(ether imide)s range from 7 to 23 pm V–1 depending on the doping level. The effect of two-dimensional structure on the NLO temporal stability was investigated by tracing the second harmonic coefficient as a function of time. Moreover, the relaxation behavior of the NLO systems was further examined by dielectric analysis. Large rotational cone volumes give the two-dimensional chromophore excellent orientational stability when the temperature approaches the glass transition temperature observed from DEA.
    URI: http://www.rsc.org/
    http://nthur.lib.nthu.edu.tw/handle/987654321/39807
    Appears in Collections:[化學工程學系] 期刊論文

    Files in This Item:

    File Description SizeFormat
    2020117010088.pdf587KbAdobe PDF464View/Open


    在NTHUR中所有的資料項目都受到原著作權保護,僅提供學術研究及教育使用,敬請尊重著作權人之權益。若須利用於商業或營利,請先取得著作權人授權。
    若發現本網站收錄之內容有侵害著作權人權益之情事,請權利人通知本網站管理者(smluo@lib.nthu.edu.tw),管理者將立即採取移除該內容等補救措施。

    SFX Query

    與系統管理員聯絡

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