Unknown

Dataset Information

0

Reverse Intersystem Crossing of Single Deuterated Perylene Molecules in a Dibenzothiophene Matrix.


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.

SUBMITTER: Smit R 

PROVIDER: S-EPMC9299031 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC7411052 | biostudies-literature
| S-EPMC8167092 | biostudies-literature
| S-EPMC6014720 | biostudies-literature
| S-EPMC5096030 | biostudies-literature
| S-EPMC5866054 | biostudies-literature
| S-EPMC7613666 | biostudies-literature
| S-EPMC5500583 | biostudies-literature
| S-EPMC8715495 | biostudies-literature
| S-EPMC5477835 | biostudies-other
| S-EPMC5947663 | biostudies-literature