文献类型：期刊文献

中文题名：新型树枝功能化萘酰亚胺类发光材料的合成及其光放大效应

英文题名：Synthesis and Light-rectifying Properties of Novel Naphthalimide Luminescence Dendrimers

作者：杜葩[1];朱为宏[1];赵非[1];田禾[1]

机构：[1]华东理工大学精细化工研究所,上海200237

年份：2004

卷号：67

期号：1

起止页码：43

中文期刊名：化学通报

外文期刊名：Chemistry

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金 (2 0 10 6 0 0 6 );上海市科委资助项目

语种：中文

中文关键词：树枝化;萘酰亚胺类;电致发光材料;合成;光放大效应;咔唑;能量转移;周边功能团

外文关键词：Naphthalimide, Dendrimers, Synthesis, Luminescent materials, Energy transfer

摘要：在树枝 (dendron)上引入特定的功能单元 ,将多个具有特定功能团 (咔唑 )连接起来 ,形成功能化树枝状周边分子团簇 ,然后将它们分别与核心色素萘酰亚胺相连接 ,合成新型周边树枝状功能化的有机发光材料 (共三代 )。稳态荧光研究发现周边功能团吸收的能量能以较高的效率传递给中心核色素萘酰亚胺 ,其传输效率与化合物的树枝代数密切相关 ,具有特殊的光采集、光放大效应。瞬态荧光研究表明树枝化合物中的咔唑单元都呈双指数衰减特征 。
A novel series of naphthalimide dendrimers have been synthesized, onto whose dendron novel specific function units are introduced. The absorption and fluorescence properties of the arrays were studied and discussed. Excitation of the terminal donor chromophores carbazole mainly results in the fluorescence of the core dye alone, whose efficiency is dependent on the dendrimer generation. The donor emission of carbazole unit is quenched due to singlet energy transfer to the core. These dendrimers show the light-harvesting and rectifying properties. Transient fluorescence indicates that carbazole unit in dendrimers exhibits dual-exponential decay characteristics, the shorter lifetime part is attributed to the interaction between the donor and core.