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Issue 6, 2012
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Molecular design, synthesis and characterization of aromatic polythioester and polydithioester

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Abstract

Molecular design of poly(ethylene dithioterephthalate) (PETS2) and poly(ethylene tetrathioterephthalate) (PETS4) has been carried out by molecular orbital calculations, NMR experiments, and single crystal X-ray structure analysis for their model compounds and refined rotational isomeric state calculations for the two polymers, and their conformational characteristics, crystal conformations, configurational properties, solubilities, crystallization behaviors, and thermal properties were predicted. For the purpose of the experimental verification, PETS2 and PETS4 were actually prepared and fully characterized. The new polymer, PETS4, was synthesized by an ionic polycondensation reaction using a complex of tetrathioterephthalic acid and piperidinium. The two polymers were characterized by elementary analysis, IR, solubility test, X-ray diffraction, thermal analysis, and solid-state NMR to yield experimental results satisfactorily consistent with the theoretical predictions. Through the actual examples, molecular design of polymers has been proved to be feasible.

Graphical abstract: Molecular design, synthesis and characterization of aromatic polythioester and polydithioester

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Supplementary files

Article information


Submitted
01 Mar 2012
Accepted
22 Mar 2012
First published
03 Apr 2012

Polym. Chem., 2012,3, 1576-1587
Article type
Paper

Molecular design, synthesis and characterization of aromatic polythioester and polydithioester

D. Abe and Y. Sasanuma, Polym. Chem., 2012, 3, 1576
DOI: 10.1039/C2PY20118F

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