Amide-based polymer liquids are important for developing biological and optical colloids or nanofluids. Functionalized properties arise from specific molecular structures. In this investigation, we report model molecular configurations of a polymer liquid, 0.3 g/L poly(vinylidene fluoride) (PVF₂) dissolved in liquid N,Ndimethylformamide (DMF), based on the characteristic IR vibration bands. Peculiarly, a ferroelectric β-PVF₂ phase reorders on a linear configuration in support with the DMF molecules, showing a characteristic band 840 cm⁻¹ (CH₂ rocking and CF₂ asymmetric stretching) with the trans band at 1275 cm⁻¹. Four C_O stretching bands ν₁⁰, ν₁¹, ν₁², and ν₁³ of 1650, 1675, 1725, and 1760 cm⁻¹ (bandwidth Δν½=180 cm⁻¹ in the four bands) arise in four major configurations of DMF–PVF₂ pairs (or derivatives). Only one prominent ν₁⁰ band 1660 cm⁻¹ (Δν½=75 cm⁻¹) incurs with a shoulder ν1 1 of 1725 cm⁻¹ (Δν½=25 cm⁻¹) in two DMF configurations. A ferroelectric field cased in presence of β-PVF₂ leads to enhance IR absorption by as much as an order of magnitude. It leads to converging non-bonding electron density on the amide moiety.