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Photophysics and electrochemistry of a platinum-acetylide disubstituted perylenediimide

Llewellyn, Ben A., Slater, Anna G., Goretzki, Gudrun, Easun, Timothy, Sun, Xue-Zhong, Davies, E. Stephen, Argent, Stephen P., Lewis, William, Beeby, Andrew, George, Michael W. and Champness, Neil R. 2014. Photophysics and electrochemistry of a platinum-acetylide disubstituted perylenediimide. Dalton Transactions 43 (1) , pp. 85-94. 10.1039/c3dt50874a

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The synthesis and photophysical study of a perylene diimide (PDI) functionalised with platinum acetylide units of the type, trans{–C[triple bond, length as m-dash]C–Pt(PBu3)2–C[triple bond, length as m-dash]C–Ph} and comparison with a phenylacetylide substituted model compound are reported. The model compound demonstrates typical perylene absorption and photoluminescence spectra characteristic of singlet excited state formation and decay. The Pt-substitution, however, appears to induce spin–orbit coupling into the chromophore and giving rise to a triplet excited state which was confirmed by transient absorption measurements. This excited state is quenched by oxygen, leading to the formation of singlet oxygen in dichloromethane, recorded by time-resolved near-infrared luminescence measurements.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Publisher: Royal Society of Chemistry
ISSN: 1477-9226
Date of First Compliant Deposit: 12 July 2016
Last Modified: 28 Jun 2019 05:09

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