ArticleChemphyschem : a European journal of chemical physics and physical chemistry2022
Reverse Intersystem Crossing of Single Deuterated Perylene Molecules in a Dibenzothiophene Matrix.
Article in Chemphyschem : a European journal of chemical physics and physical chemistry, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Future Paths in Cryogenic Single-Molecule Fluorescence Spectroscopy.The journal of physical chemistry. C, Nanomaterials and interfaces · 2024Review
- Reverse Intersystem Crossing of Single Deuterated Perylene Molecules in a Dibenzothiophene Matrix.Chemphyschem : a European journal of chemical physics and physical chemistry · 2022Article
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Authors and funding
4 authors.
Funding
Abstract
Intersystem crossing to the long-lived metastable triplet state is often a strong limitation on fluorescence brightness of single molecules, particularly for perylene in various matrices. In this paper, we report on a strong excitation-induced reverse intersystem crossing (rISC), a process where single perylene molecules in a dibenzothiophene matrix recover faster from the triplet state, turning into bright emitters at saturated excitation powers. With a detailed study of single-molecule fluorescence autocorrelations, we quantify the effect of rISC. The intrinsic lifetimes found for the two effective triplet states (8.5±0.4 ms and 64±12 ms) become significantly shorter, into the sub-millisecond range, as the excitation power increases and fluorescence brightness is ultimately enhanced at least fourfold. Our results are relevant for the understanding of triplet state manipulation of single-molecule quantum emitters and for markedly improving their brightness.
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