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Homoconjugation enhances the photophysical and electrochemical properties of a new 3D intramolecular charge transfer iptycene displaying deep blue emission

Montanaro, Stephanie; Congrave, Daniel G.; Etherington, Marc K.; Wright, Iain A.

Homoconjugation enhances the photophysical and electrochemical properties of a new 3D intramolecular charge transfer iptycene displaying deep blue emission Thumbnail


Authors

Stephanie Montanaro

Daniel G. Congrave

Marc K. Etherington

Iain A. Wright



Abstract

A new structural class of 3D molecule capable of intramolecular charge transfer (ICT) is introduced, based upon an electron poor ring-fused triptycene core. Its photophysical and electrochemical properties are evaluated in comparison with an analogous molecule, representative of a single fin of the iptycene. Homoconjugation through the delocalised LUMO of the iptycene facilitates a great increase in transition probability both to and from the ICT state, while the deep blue photoluminescence of the single fin is retained. The peripherally distributed HOMO of the iptycene also permits reversible access to a tricationic state in a single step and at an oxidation potential lower than that of the single fin. This first example demonstrates great potential for this 3D design concept in producing new optoelectronic molecular materials.

Citation

Montanaro, S., Congrave, D. G., Etherington, M. K., & Wright, I. A. (2019). Homoconjugation enhances the photophysical and electrochemical properties of a new 3D intramolecular charge transfer iptycene displaying deep blue emission. Journal of Materials Chemistry C Materials for optical and electronic devices, 7(41), 12886-12890. https://doi.org/10.1039/c9tc03255j

Journal Article Type Article
Acceptance Date Sep 6, 2019
Online Publication Date Sep 9, 2019
Publication Date Nov 7, 2019
Deposit Date Sep 17, 2019
Publicly Available Date Sep 6, 2020
Journal Journal of Materials Chemistry C Materials for optical and electronic devices
Print ISSN 2050-7526
Electronic ISSN 2050-7534
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 7
Issue 41
Pages 12886-12890
DOI https://doi.org/10.1039/c9tc03255j
Public URL https://durham-repository.worktribe.com/output/1286350

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