Fu Kefu, Martin Robert B, Rao Apparao M, Sun Ya-Ping
Department of Chemistry, Center for Advanced Engineering Fibers and Films, Howard L. Hunter Chemistry Laboratory, Clemson University, Clemson, South Carolina, USA.
J Nanosci Nanotechnol. 2003 Feb-Apr;3(1-2):127-31. doi: 10.1166/jnn.2003.174.
Pyrene was introduced into cavities in functionalized single-walled and multiple-walled carbon nanotubes to be used as a molecular probe in the study of encapsulation. The solubility of these materials in common organic solvents allowed solution-phase absorption and emission spectroscopic measurements. The results, which are consistent with the formation of pyrene excimer, are explained in terms of high local pyrene concentrations and perhaps pyrene microcrystals inside the carbon nanotube cavities. The fluorescence decay results show that there is significant quenching of pyrene excited states by the hosting carbon nanotubes.
将芘引入功能化单壁和多壁碳纳米管的空腔中，用作研究封装的分子探针。这些材料在常见有机溶剂中的溶解性使得能够进行溶液相吸收和发射光谱测量。结果与芘激基缔合物的形成一致，这可以通过碳纳米管腔内芘的高局部浓度以及可能存在的芘微晶来解释。荧光衰减结果表明，主体碳纳米管对芘激发态有显著的猝灭作用。
