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Al-Yasari, Ahmed 
ORCID: https://orcid.org/0000-0001-8768-1248, El Moll, Hani, Purdy, Ryan, Vincent, Kevin B., Spence, Philip, Malval, Jean-Pierre and Fielden, John ORCID: https://orcid.org/0000-0001-5963-7792
(2021)
Optical, third order non-linear optical and electrochemical properties of dipolar, centrosymmetric and C2v organoimido polyoxometalate derivatives.
Physical Chemistry Chemical Physics, 23 (20).
pp. 11807-11817.
ISSN 1463-9076
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Abstract
A family comprising seven arylimido-polyoxometalate (POM) hybrid chromophores (three of which are new), with linear dipolar,C 2vand linear centrosymmetric geometries have been synthesised and studied by electronic absorption spectroscopy, electrochemistry, Z-scans (two photon absorption, TPA) and computation (DFT/TD-DFT). These reveal that POM acceptor units are an effective basis for TPA materials: the centrosymmetric bis-POM chromophores produce significant cross sections (δup to 82 GM) from a single aryl bridge, a similar performance to larger dipolar π-systems combining carbazole or diphenylamino donors with the imido-POM acceptor. DFT/TD-DFT calculations indicate strong communication between POM and organic components is responsible for the linear and non-linear optical behaviour of these compounds, while electrochemical measurements reveal class II mixed valence behaviour resulting from an interplay of through-bond and through-space effects.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | physics and astronomy(all),physical and theoretical chemistry ,/dk/atira/pure/subjectarea/asjc/3100 |
| Faculty \ School: | Faculty of Science > School of Chemistry |
| UEA Research Groups: | Faculty of Science > Research Groups > Chemistry of Light and Energy Faculty of Science > Research Groups > Chemistry of Materials and Catalysis Faculty of Science > Research Groups > Energy Materials Laboratory |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 08 May 2021 00:04 |
| Last Modified: | 21 Dec 2022 04:37 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/79956 |
| DOI: | 10.1039/D0CP06610A |
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