Probing the Effects of Solute-Solvent Interactions and Solvent Free Volume on the 13C Spin-Lattice Relaxation of C60

实验物理化学计划支持艺术罗德里格斯 东卡罗莱纳大学和内德·H.北方大学的马丁 威尔明顿的卡罗莱纳正在进行的自旋晶格测量 弛豫率作为温度和场强的函数， 各种有机溶剂。 他们的目标是（i）确定 化学位移各向异性（CSA）和自旋旋转（SR） 对自旋晶格弛豫速率的贡献 巴克敏斯特富勒烯（C60）在各种溶剂中;（ii）以确定 溶质-溶剂相互作用和无溶剂的相对重要性 （三）对国家安全和社会责任贡献的大小进行建模; C60在各种溶剂中的溶解度;以及（iv）将这些研究扩展到C70。 核磁共振（NMR）弛豫测量是其中一个 研究各种凝聚相的最有力的技术 现象。 巴克敏斯特富勒烯的发现和其他相关的 富勒烯已经引起了人们对其研究的极大兴趣。 化学和物理性质。 虽然一些 研究人员一直致力于研究固态核磁共振特性 对于这种分子，有关凝聚态的细节知之甚少 13相碳自旋-晶格弛豫速率及其影响因素 放松的方式。

The Experimental Physical Chemistry Program supports Art Rodriguez of East Carolina University and Ned H. Martin of The University of North Carolina at Wilmington in their ongoing measurements of spin-lattice relaxation rates as a function of temperature and field strength, in various organic solvents. Their goals are (i) to determine the magnitude of the chemical shift anisotropy (CSA) and spin rotation (SR) contributions to the spin-lattice relaxation rate of buckminsterfullerene(C60) in various solvents; (ii) to determine the relative importance of solute-solvent interactions and solvent free volume on the magnitude of the CSA and SR contributions; (iii) to model C60 in the various solvents; and (iv) to extend these studies to C70. Nuclear magnetic resonance (NMR) relaxation measurements are one of the most powerful techniques for investigating a variety of condensed phase phenomena. The discovery of buckminsterfullerene and other related fullerenes has generated a great deal of interest into the study of its chemical as well as its physical properties. While a number of researchers have focused on investigating the solid state NMR properties of this molecule, very few details are known concerning the condensed phase carbon-13 spin-lattice relaxation rate and factors affecting this mode of relaxation.