Exploring the dark: detecting long-lived Nile Red 3 ILCT states in Ru( ii ) polypyridyl photosensitisers

Exploring the dark: detecting long-lived Nile Red 3 ILCT states in Ru( ii ) polypyridyl photosensitisers

Two novel Ru( ii ) photosensitisers sporting ethynyl-Nile Red chromophores are shown to absorb strongly in the visible region, and to have two distinct but weakly emissive states ( 1 ILCT* and 3 MLCT*). In addition a long-lived, lower energy ‘dark’ (non-emissive) triplet excited state is identified...

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Veröffentlicht in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2021-10, Vol.9 (41), p.14573-14577
Hauptverfasser: Condon, Claire, Conway-Kenny, Robert, Cui, Xiaoneng, Hallen, Lukas J., Twamley, Brendan, Zhao, Jianzhang, Watson, Graeme W., Draper, Sylvia M.
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Sprache:eng
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Zusammenfassung:Two novel Ru( ii ) photosensitisers sporting ethynyl-Nile Red chromophores are shown to absorb strongly in the visible region, and to have two distinct but weakly emissive states ( 1 ILCT* and 3 MLCT*). In addition a long-lived, lower energy ‘dark’ (non-emissive) triplet excited state is identified ( 3 ILCT*) and successfully exploited for singlet oxygen generation.
ISSN:2050-7526
2050-7534
DOI:10.1039/D1TC02830H