Skip to Main content Skip to Navigation
Journal articles

Stability of hydrogen bonds upon polymerization and color transition of diacetylenes: An FTIR spectroscopy study

Abstract : FTIR spectra (400-7500 cm(-1)) have been recorded for polycrystalline films and single crystals of the diacetylene 4BCMU in the monomer, blue and red polymer states, and of 3BCMU monomer. Particular attention was paid to the amide bands associated to the urethanes in the side groups, which form one-dimensional H-bond linear chains quite similar to those found in peptides and proteins. The positions and strengths of these absorptions are practically unchanged by polymerization or blue to red polymer color transition. This suggests that the H-bond linear chains are the main constitutive interactions in these crystals, and that the conjugated parts must and do ``adapt'' to the unchanged H-bond lines. No evidence of side group disordering was observed at the irreversible blue to red transition in poly-4BCMU crystal. (C) 2013 Elsevier B.V. All rights reserved.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-01229142
Contributor : Gestionnaire Hal-Upmc <>
Submitted on : Monday, November 16, 2015 - 1:39:07 PM
Last modification on : Friday, November 6, 2020 - 3:56:41 AM

Identifiers

Citation

Sylvie Spagnoli, Manuel Rei Vilar, Michel Schott. Stability of hydrogen bonds upon polymerization and color transition of diacetylenes: An FTIR spectroscopy study. Vibrational Spectroscopy, Elsevier, 2014, 70, pp.89-99. ⟨10.1016/j.vibspec.2013.11.010⟩. ⟨hal-01229142⟩

Share

Metrics

Record views

514