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

类固态、溶液和超临界流体中富勒烯的实验研究

• 批准号: 9320558
• 负责人: Ya-Ping Sun
• 金额: $ 27.36万
• 依托单位: Clemson University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-08-01 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9320558&HistoricalAwards=false
• 关键词: Experimental; Investigations; Fullerenes; Solid; Like

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.

9320558孙这个奖项是在先进材料和加工计划，以支持教授的研究亚平孙。 该研究的主题是C60和C70团簇在类固态、溶液和超临界流体中的识别和表征。解决方案的研究将集中在富勒烯的激发态性质，特别是C60和C70的实验和计算的跃迁概率之间的差异。一种机制，其中排放量从热填充的低激发态假设将评估温度和溶剂依赖性的调查。由于富勒烯在普通溶剂中的溶解度低，超临界流体将被用于溶剂依赖性研究。 将超临界流体引入富勒烯研究还将确定溶剂系统，在该溶剂系统中可以创建可变的溶剂环境，用于研究溶剂对富勒烯的电子和电荷转移反应的影响。 对富勒烯和富勒烯团簇的电子物理学的研究将促进我们对π共轭分子和聚合物的激发态行为的全面理解，并将影响新兴技术，如π共轭聚合物发光二极管。