Issue 42, 2009

Supramolecular self-assembly nature of a novel thermotropic liquid crystalline polymer containing no conventional mesogens

Abstract

Two-dimensional correlation infrared spectroscopy (2DIR) and a newly developed perturbation correlation moving window (PCMW) technique was employed to study the precise supramolecular self-assembly nature of poly[di(butyl)vinyl terephthalate] (PDBVT), a novel thermotropic liquid crystalline polymer which can self-assemble into a two-dimensional hexagonal columnar (2D ΦH) phase without conventional mesogens. PCMW had found the weak phase transition temperature to be about 85 °C, and further divided the “S or anti-S” shaped spectral variations into three evolving stages. 2DIR results indicated that carbonyl groups acted as the starting point of molecular motions upon heating, and had a significant influence on the formation of the 2D ΦH phase. Based on the additional motion sequence of symmetric and asymmetric C–H stretching vibrations, the whole self-assembly process of PDBVT on the mesoscale, whose backbones experienced “extension–distortion–slight extension” consecutive motions was elucidated.

Graphical abstract: Supramolecular self-assembly nature of a novel thermotropic liquid crystalline polymer containing no conventional mesogens

Supplementary files

Article information

Article type
Paper
Submitted
19 May 2009
Accepted
29 Jun 2009
First published
04 Aug 2009

Phys. Chem. Chem. Phys., 2009,11, 9861-9870

Supramolecular self-assembly nature of a novel thermotropic liquid crystalline polymer containing no conventional mesogens

S. Sun, H. Tang, P. Wu and X. Wan, Phys. Chem. Chem. Phys., 2009, 11, 9861 DOI: 10.1039/B909914J

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