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化学学报
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化学学报 ›› 2008, Vol. 66 ›› Issue (9): 1053-1058. 上一篇    下一篇

研究论文

基于聚集荧光增强体系的掺杂纳米粒子的可调控荧光发射与能量传递性质研究

钱妍，李沙瑜*，王双青，于贵，刘云圻，孙晓波，徐新军，王潜，许慧君，杨国强*   

  1. (北京分子科学国家实验室 中国科学院化学研究所光化学重点实验室 中国科学院化学研究所有机固体重点实验室北京 100080)
  • 投稿日期:2007-04-28 修回日期:2007-11-28 发布日期:2008-05-14
  • 通讯作者: 杨国强

Tunable Fluorescence Emission and Efficient Energy Transfer in N,N'-di[4-(2'-benzo[d]thiazolyl)-3-hydroxyphenyl]5-tert- butylisophthalamide Doped Nanoparticles

QIAN Yan LI Sha-Yu* WANG Shuang-Qing YU Gui LIU Yun-Qi SUN Xiao-Bo XU Xin-Jun WANG Qian XU Hui-Jun YANG Guo-Qiang*   

  1. (Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry and Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080)
  • Received:2007-04-28 Revised:2007-11-28 Published:2008-05-14
  • Contact: YANG Guo-Qiang

PDF

843

被引次数

14

通过再沉淀法制备了平均粒径200 nm左右的N,N'-双[4-(2'-苯并噻唑)-3-羟苯基]-5-叔丁基异酞酰胺(DHBIA)有机纳米粒子. 纳米粒子呈现出明显的聚集诱导荧光增强(AIEE)性质. 基于DHBIA聚集体的强荧光发射强度, 当其中掺杂有红光发射化合物N,N'-双[(4-二苯胺)-苯甲醛缩]二氨基马来腈(PBDM)作为能量受体时, 可清楚地观察到掺杂纳米颗粒中两种组分间的能量传递现象. 结果表明: 通过改变分子PBDM在体系中的掺杂浓度, 可实现对体系发光由绿色到红色的调控.

关键词: 有机纳米颗粒, 聚集诱导的荧光增强, 能量传递, Fö, rster共振机制

By a facile reprecipitation method, organic nanoparticles with relatively uniform diameter of 200 nm of DHBIA {N,N'-di[4-(2'-benzo[d]thiazolyl)-3-hydroxyphenyl]5-tert-butylisophthalamide} have been prepared, which exhibited obvious aggregation induced enhanced emission. Based on the strong fluorescence of DHBIA in solid state, the red fluorescent compound PBDM {N,N'-bis-[(4-diphenylamino)- benzylidene]-diaminomaleonitrile} has been doped in the DHBIA nanoparticles and significant energy transfer was observed from DHIBA to PBDM. It was found that with increasing molar fraction of PBDM, the fluorescence could be tuned from green to red. Energy transfer in the doped nanoparticles was highly efficient and dominated by the Förster resonance mechanism. The emission tuning was much correlated to the intramolecular charge transfer in the PBDM molecules.

Key words: organic nanoparticle, aggregation induced enhanced emission, energy transfer, Fö, rster resonance mechanism