Fluorescence relaxation and rotational dynamics of 3,3’-NBC-one in polar protic solvents

Abstract

At room temperature rotational reorientation dynamics of 3,3'-NBC-Onehas been studied in polar protic solvents using picosecond time resolved spectroscopy.Experimental rotational reorientationtime shows 3,3'-NBC-Onerotates slower when viscosity of solvent increases. Qualitative analysis using Stokes-Einstein-Debye (SED), Geirer-Wirtz (GW) and DoteKivelson-Schwartz (DKS)mechanical frictions theories has been performed. The measured reorientation times of 3,3'-NBCOne is in close agreement with slip boundary condition as predicted by SED theory.