Photophysics and electrochemistry of a platinum-acetylide disubstituted perylenediimide

Research output: Contribution to journalArticlepeer-review

Authors

  • 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

Colleges, School and Institutes

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.

Details

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