DNMR investigation of site dependence of field induced molecular dynamics

Abstract

Molecular dynamics of a fully deuteriated 4-n-pentyl-4'-cyanobiphenyl (5CB-dl_<19>) has been investigated using deuterium nuclear magnetic resonance spectroscopy. Time resolved deuterium NMR spectra, which are originated from C-D bonds on a flexible alkyl chain and rigid biphenyl core of 5CB-d<19>, have been measured to investigate dynamic processes of individual sites of a molecular by an application and removal of the voltage to the cell. It has been clear that each C-D bond sites of 5CB-d<19> rotate simultaneously in a dynamic process in the present measured time region.