Experimental Investigations of Fullerenes in Solid-Like States, Solutions, and Supercritical Fluids

9320558孙亚平：该奖项是为支持孙亚平教授的研究而设立的。本研究的主题是C60和C70团簇在类固体、溶液和超临界流体中的识别和表征。溶液研究将集中在富勒烯的激发态性质，特别是C60和C70跃迁几率的实验值和计算值之间的差异。假设从热填充的低激发态发射的机制将通过依赖温度和溶剂的研究来评估。由于富勒烯在普通溶剂中的溶解度较低，超临界流体将被用于溶剂依赖研究。将超临界流体引入富勒烯的研究还将确定溶剂系统，在该系统中可以为研究溶剂对富勒烯的电子和电荷转移反应的影响创造不同的溶剂环境。对富勒烯和富勒烯团簇的光物理研究将促进我们对PI共轭分子和聚合物激发态行为的一般理解，并将对新兴技术产生影响，如基于PI共轭聚合物的发光二极管。

9320558 Sun This award is made in the Advanced Materials and Processing Program in support of the research of Professor Ya-Ping Sun. The theme of the research is the identification and characterization of C60 and C70 clusters in solid-like states, solution and supercritical fluids. The solution studies will focus on the excited state properties of the fullerenes, especially the discrepancy between experimental and calculated transition probabilities for both C60 and C70. A mechanism in which emissions from thermally populated low-lying excited states are assumed will be evaluated by temperature and solvent-dependent investigations. Because of low solubilities of the fullerenes in common solvents, supercritical fluids will be used in the solvent-dependent studies. The introduction of supercritical fluids into fullerene research will also identify solvent systems in which variable solvent environments can be created for studies of solvent effects on electron and charge-transfer reactions of fullerenes. Research on the photophysics of fullerenes and fullerene clusters will advance our general understanding of the excited-state behavior of pi-conjugated molecules and polymers and will impact emerging technologies such as pi-conjugated polymer-based light-emitting diodes.