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.
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.
出处
《物理实验》
2007年第1期10-13,共4页
Physics Experimentation
关键词
单壁碳纳米管
化学修饰
荧光光谱
荧光寿命
single-walled carbon nanotubes
chemical modification
fluorescence spectrum
fluorescence lifetime
