Photophysics and electrochemistry of a platinum-acetylide disubstituted perylenediimide

Ben A. Llewellyn, Anna G. Slater, Gudrun Goretzki, Timothy L. Easun, Xue-Zhong Sun, E. Stephen Davies, Stephen P. Argent, William Lewis, Andrew Beeby, Michael W. George, Neil R. Champness

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)85-94
Number of pages10
JournalDalton Transactions
Volume43
Issue number1
Early online date27 Sep 2013
DOIs
Publication statusPublished - 2014

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