Microstructure characterization of poly(2-N-carbazolylethyl acrylate) by two-dimensional NMR spectroscopy

Abstract

Poly(2-N-carbazolylethyl acrylate) has been synthesized by solution polymerization of 2-N-carbazolyethyl acrylate with 2,2'-azobisisobutyronitrile as free radical initiator. Di stortionless Enhancement by Polarization Transfer has been used to distinguish between the overlapping main-chain methine and side-chain methylene resonances in ¹³C {¹H} NMR spectrum. Configurational assignments of carbon and proton resonances of main-chain methylene group have been done using two-dimensional Heteronuclear Single Quantum Correlation spectroscopy and two-dimensional Total Correlation Spectroscopy. Two and three bond order carbon/proton couplings have been investigated using Heteronuclear Multiple Bond Correlation studies.