Characterization of n -butyl acrylate centered triads in poly( n -butyl acrylate- co -carbon monoxide- co -ethylene) by isotopic labeling and two dimensional NMR

Abstract

Supplementary material (1D 13C NMR spectra of the 13C-labeled and unlabeled polymers) is available in the online version of this article at http://dx.doi.org/100.1007/s00216-003-2402-3.

A suite of 3D NMR methods for characterizing complex hydrocarbon structure fragments

“…The synthesis of the labeled polymer and thorough characterization of the sample have been reported elsewhere [10]. Crystals of 1,4-dichlorobenzene-d 4 were melted and 20 mg of the polymer were dissolved in 0.7 ml of the melt to produce 3% (w/v) polymer solutions.…”

“…For complete characterization, two polymers selectively labeled in different monomer fragments were prepared so that C-and B-centered pentad structures could be studied separately. Even with this simplification 2D-NMR methods provided only a limited number of additional assignments [10]. Fig.…”

Comprehensive analysis of stereoregularity and sequence distribution in 2-N-carbazolylethyl acrylate and methyl methacrylate copolymers by 2D NMR spectroscopy and their thermal studies

“…6(b) and (c)). CMrMM tetrad gives a cross-peak lying in between 40 and 41 at 52.01/1.69 ppm (42). A cross-correlation peak at 1.96/1.35 ppm (H) in 2D TOCSY NMR spectra (Fig.…”

“…Brar et al has studied extensively the microstructure of various (meth) acrylate copolymer systems by various NMR techniques [36][37][38]. In this article, we report the microstructure of poly(2-N-carbazolylethyl acrylate-co-methyl methacrylate) using high-resolution 1D ( 1 H, 13 C{ 1 H}, 90,45) and 2D (HSQC, TOCSY, HMBC) [35][36][37][38][39][40][41][42][43] NMR spectroscopy techniques. A comprehensive analysis of the complex and overlapped regions of 13 C{ 1 H} NMR spectra was done with the aid of various 2D NMR techniques.…”

One- and two-dimensional NMR studies of methyl acrylate/vinyl acetate/N-vinyl carbazole terpolymers

“…Various coworkers [18][19][20][21][22] have investigated the microstructure of N-vinyl carbazole based copolymers with different monomers. The stereosequence of different triads in various carbazole copolymers and terpolymers have earlier been reported using various 2D NMR techniques [23][24][25][26][27].…”