In this study where the FTIR, Raman, 1H NMR and 13C NMR spectra of poly(N-vinylimidazole) which can
be abbreviated as poly(NVIM) are first reported, a comparison of the experimental and theoretical vibrational
spectral data of monomer NVIM and water-soluble poly(NVIM) has been given; such a comparison
over the vibrational modes and associated spectral data calculated at B3LYP/6-31+G(d) level of theory for
NVIM and its stable dimer forms provided significant contributions for getting a reliable interpretation of
the observed vibrational spectra of poly(NVIM). The obtained results revealed that the change from NVIM
to poly(NVIM) should be characterized by the disappearance of the CH2@CH bonds of the vinyl group and
the appearance of the aliphatic CAH and CH2 bonds. Besides this, the thermal properties of poly(NVIM)
were elucidated by thermogravimetric analyses such as TGA, DTA and DSC, while some electronic structure
parameters of the most stable dimers of NVIM were investigated through the structure calculations
performed by using B3LYP method and 6-31+G(d) basis set within the density functional theory (DFT)
methodology