Investigation of Solvation Power Parameter of Nicotinamide in Binary Solvent Mixture Using Ftir Spectroscopy
No Thumbnail Available
Date
2018-05-05
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
The chromic behavior of a compound is due to photochromism, thermochromisim,
electrochromism, solvatochromism, Ionochromism, halochromism, tribichromism and
Piezochromism. The term solvatochromism is used to describe changes in Infrared
vibrational band followed a change in the polarity of the media. Solvent effects on the
vibrational absorption band of nicotinamide in different concentration of binary mixture
of solvents were determined. In varying the mole fraction of binary mixture of solvents
positive and negative solvatochromism were observed according to the solvation
energy of the molecule at the ground states and excited states. The wavenumber
functionality on mole fraction were obtained from the correlation graph. Solvent
dependent solvation dielectric constant was determined from the correlation plots of
wavenumber as the function of dielectric constant mixture of binary solvents as solvent
polarity parameter.
Description
Keywords
Vibrational Spectra, Solvent Polarity, Spectral Shifts, Nicotinamide, Solvatochromism, Dielectric Constant