Photophysics and electrochemistry of a platinum-acetylide disubstituted perylenediimide.
The synthesis and photophysical study of a perylene diimide (PDI) functionalised with platinum acetylide units of the type, trans{-C≡C-Pt(PBu3)2-C≡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.
School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK. Neil.Champness@nottingham.ac.uk Mike.George@nottingham.ac.uk.
Ben A
BA
Llewellyn
Anna G
AG
Slater
Gudrun
G
Goretzki
Timothy L
TL
Easun
Xue-Zhong
XZ
Sun
E Stephen
ES
Davies
Stephen P
SP
Argent
William
W
Lewis
Andrew
A
Beeby
Michael W
MW
George
Neil R
NR
Champness