title: Shedding Light on Structure-Property Relationships for Conjugated Microporous Polymers: The Importance of Rings and Strain.
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.
authors.affiliation: Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, U.K.
authors.forename: Martijn A
authors.initials: MA
authors.lastname: Zwijnenburg
authors.forename: Ge
authors.initials: G
authors.lastname: Cheng
authors.forename: Tom O
authors.initials: TO
authors.lastname: McDonald
authors.forename: Kim E
authors.initials: KE
authors.lastname: Jelfs
authors.forename: Jia-Xing
authors.initials: JX
authors.lastname: Jiang
authors.forename: Shijie
authors.initials: S
authors.lastname: Ren
authors.forename: Tom
authors.initials: T
authors.lastname: Hasell
authors.forename: Frédéric
authors.initials: F
authors.lastname: Blanc
authors.forename: Andrew I
authors.initials: AI
authors.lastname: Cooper
authors.forename: Dave J
authors.initials: DJ
authors.lastname: Adams