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Updated: May 6, 2026

Monitoring the Effects of Illumination on the Structure of Conjugated Polymer Gels Using Neutron Scattering
Published on: December 21, 2017
Shedding Light on Structure-Property Relationships for Conjugated Microporous Polymers: The Importance of Rings and
Martijn A Zwijnenburg1, Ge Cheng, Tom O McDonald
1Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, U.K.
Abstract:
The photophysical properties of insoluble porous pyrene networks, which are central to their function, differ strongly from those of analogous soluble linear and branched polymers and dendrimers. This can be rationalized by the presence of strained closed rings in the networks. A combined experimental and computational approach was used to obtain atomic scale insight into the structure of amorphous conjugated microporous polymers. The optical absorption and fluorescence spectra of a series of pyrene-based materials were compared with theoretical time-dependent density functional theory predictions for model clusters. Comparison of computation and experiment sheds light on the probable structural chromophores in the various materials.
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