Issue 22, 2022

Evidence for triplet-state-dominated luminescence in biicosahedral superatomic molecular Au25 clusters

Abstract

In photoluminescence (PL) quenching and triplet fusion upconversion experiments with fluorescent organic-molecule quenchers, it was revealed that a rod-shaped, phosphine- and thiolate-protected biicosahedral Au25 cluster (a representative di-superatomic molecule) exhibits only phosphorescence, not fluorescence, at room temperature with an intersystem crossing quantum yield of almost 100%. By virtue of these photophysical properties, this cluster can be used as a triplet sensitizer that undergoes direct singlet–triplet transitions in the near-infrared (NIR) region (730–900 nm), inducing photon upconversion from NIR to visible light.

Graphical abstract: Evidence for triplet-state-dominated luminescence in biicosahedral superatomic molecular Au25 clusters

Supplementary files

Article information

Article type
Communication
Submitted
11 Febr. 2022
Accepted
05 Apr. 2022
First published
26 Apr. 2022

Nanoscale, 2022,14, 7974-7979

Evidence for triplet-state-dominated luminescence in biicosahedral superatomic molecular Au25 clusters

M. Mitsui, Y. Wada, R. Kishii, D. Arima and Y. Niihori, Nanoscale, 2022, 14, 7974 DOI: 10.1039/D2NR00813K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements