光功能化的碳硅烷树形大分子在质子化过程中的荧光增强效应

J4 ›› 2012, Vol. 47 ›› Issue (1): 28-32.

光功能化的碳硅烷树形大分子在质子化过程中的荧光增强效应

李春芳,李东祥*,侯万国*

青岛科技大学化学与分子工程学院, 山东青岛 266042

收稿日期:2011-05-03 出版日期:2012-01-20 发布日期:2012-06-29
通讯作者: 李东祥(1972- ), 男,博士,副教授,主要从事纳米粒子聚合物复合材料研究. Email: lidx@qust.edu.cn
作者简介:李春芳(1971- ),女,博士,副教授,主要从事有机硅高分子材料的合成及应用研究. Email: lichunfang@qust.edu.cn
基金资助:
山东省泰山学者基金资助项目(TS 20070713);山东省优秀中青年科学家科研奖励基金 (BS2009CL032)

Fluorescence enhancement effect of optical functionalized carbosilane dendrimer in the course of protonation

LI Chun-fang, LI Dong-xiang*, HOU Wan-guo*

School of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China

Received:2011-05-03 Online:2012-01-20 Published:2012-06-29

摘要/Abstract

摘要：

制备了外层带有荧光素基团的碳硅烷树形大分子,研究了这种树形大分子在质子化过程中的荧光增强效应。结果表明,这种树形大分子的荧光基团的紫外吸收与单荧光素参照物基本一致,而体系的荧光强度和荧光量子产率均高于参照体系。同一个树形大分子上的荧光基团之间可能存在一定的能量传递作用,从而提高了体系的荧光强度。

关键词: 树形大分子; 荧光增强效应;信号放大效应

Abstract:

Carbosilane dendrimer with peripheral fluorescein groups was prepared and its fluorescence enhancement effect in the course of protonation was investigated in this study. The results indicated that the absorption spectra of the fluorescent groups of the dendrimer were consistent with the monofluorescein reference compound, but the fluorescence intensity and fluorescence quantum yields were higher than the reference. Certain energy transfer effects might occur among the luminescent groups in the same dendrimer, resulting in the enhanced fluorescence intensity.

Key words: dendrimer; fluorescence enhancement effect; signal amplification effect

李春芳,李东祥*,侯万国*. 光功能化的碳硅烷树形大分子在质子化过程中的荧光增强效应[J]. J4, 2012, 47(1): 28-32.

LI Chun-fang, LI Dong-xiang*, HOU Wan-guo*. Fluorescence enhancement effect of optical functionalized carbosilane dendrimer in the course of protonation[J]. J4, 2012, 47(1): 28-32.

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