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单壁碳纳米管吸附联苯类有机物的荧光光谱分析
引用本文:徐中辉,邱复生,牛海波,陈信伟,黄新刚.单壁碳纳米管吸附联苯类有机物的荧光光谱分析[J].物理实验,2007,27(1):10-13.
作者姓名:徐中辉  邱复生  牛海波  陈信伟  黄新刚
作者单位:西安交通大学,应用物理系,陕西,西安,710049
摘    要:利用芳香族化合物对单壁碳纳米管进行了化学修饰,并利用荧光光谱以及时间分辨光谱对修饰后的单壁碳纳米管进行了表征分析.实验发现吸附对三联苯后有1个荧光峰位置发生了蓝移,这说明吸附过程使对三联苯的一些能级分布发生了变化.测量吸附前后对三联苯和蒽甲醇的荧光寿命,发现吸附后的荧光衰减曲线下降趋势更加明显,对曲线进行多指数拟合得出的荧光寿命及其数目发生了变化,分析了可能导致该现象的原因.

关 键 词:单壁碳纳米管  化学修饰  荧光光谱  荧光寿命
文章编号:1005-4642(2007)01-0010-04
修稿时间:2006-05-19

Fluorescence spectrum analysis of the single-walled carbon nanotubes absorbed the biphenyl organism
XU Zhong-hui,QIU Fu-sheng,NIU Hai-bo,CHEN Xin-wei,HUANG Xin-gang.Fluorescence spectrum analysis of the single-walled carbon nanotubes absorbed the biphenyl organism[J].Physics Experimentation,2007,27(1):10-13.
Authors:XU Zhong-hui  QIU Fu-sheng  NIU Hai-bo  CHEN Xin-wei  HUANG Xin-gang
Abstract:Single-walled carbon nanotubes are chemically modified by aroma compounds, the product is analyzed by fluorescence spectrum and time-resolved photoluminescence. The fluorescence apex moves to the short wavelength side, which indicates that the energy level has changed after absorbing the biphenyl organism. The fluorescence lifetime is measured after absorbing the biphenyl and anthracene carbinol, and the damping speed of the fluorescence is found to be faster. The changes of the fluorescence lifetime have been determined from the exponent fitting curve, possible reasons for these changes have been analyzed.
Keywords:single-walled carbon nanotubes  chemical modification  fluorescence spectrum  fluorescence lifetime
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