Photophysics and electrochemistry of a platinum-acetylide disubstituted perylenediimide.
Photophysics and electrochemistry of a platinum-acetylide disubstituted perylenediimide.
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DOI：
10.1039/c3dt50874a
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发表时间：
2014-01
影响因子：
4
通讯作者：
Ben A Llewellyn;A. Slater;G. Goretzki;T.P. Sun;Xue-Zhong Davies;E. Stephen;Stephen P Lewis;W. Beeby;A. George;Michael W;A. Beeby;M. George;N. Champness
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文献类型：
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作者：
Ben A Llewellyn;A. Slater;G. Goretzki;T.P. Sun;Xue-Zhong Davies;E. Stephen;Stephen P Lewis;W. Beeby;A. George;Michael W;A. Beeby;M. George;N. Champness
本文报道了一种以乙酰化铂为官能基的苝酰二亚胺（PDI）的合成和光物理性质的研究，并与苯乙酰基取代的模型化合物进行了比较。模型化合物具有典型的苝吸收和单线态激发态形成和衰变的光致发光光谱特征。然而，pt取代似乎诱导自旋轨道耦合进入发色团，并产生三重态激发态，这被瞬态吸收测量证实。这种激发态被氧淬灭，导致二氯甲烷中单线态氧的形成，这是由时间分辨近红外发光测量记录的。
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.