作者: Richard A. Farrer , Brian J. Loughnane , John T. Fourkas
DOI: 10.1021/JP970510O
关键词: Chemistry 、 Surface layer 、 Molecule 、 Carbon disulfide 、 Kerr effect 、 Layer (electronics) 、 Chemical physics 、 Viscosity 、 Atmospheric temperature range 、 Spectroscopy
摘要: Optical-heterodyne-detected Raman-induced Kerr effect spectroscopy is used to study the dynamics of CS2 confined sol-gel glasses with 24-A pores, over entire temperature range at which a liquid. At all temperatures, data are consistent existence layer molecules pore surfaces that experiences higher effective viscosity than bulk Within this model, orientational correlation times and relative populations extracted for bulklike surface molecules. The found be less one molecule thick range, modest increase in thickness as lowered.