Ultrabright Au@Cu14 nanoclusters: 71.3% phosphorescence quantum yield in non-degassed solution at room temperature

Yongbo Song, Yingwei Li, Meng Zhou, Xuan Liu, Hao Li, He Wang, Yuhua Shen, Manzhou Zhu, Rongchao Jin

Research output: Contribution to journalArticlepeer-review

Abstract

The photoluminescence of metal nanoclusters is typically low, and phosphorescence emission is rare due to ultrafast free-electron dynamics and quenching by phonons. Here, we report an electronic engineering approach to achieving very high phosphorescence (quantum yield 71.3%) from a [Au@Cu14(SPhtBu)12(PPh(C2H4CN)2)6]+ nanocluster (abbreviated Au@Cu14) in non-degassed solution at room temperature. The structure of Au@Cu14 has a single-Au-atom kernel, which is encapsulated by a rigid Cu(I) complex cage. This core-shell structure leads to highly efficient singlet-to-triplet intersystem crossing and suppression of nonradiative energy loss. Unlike the phosphorescent organic materials and organometallic complexes—which require de-aerated conditions due to severe quenching by air (i.e., O2)—the phosphorescence from Au@Cu14 is much less sensitive to air, which is important for lighting and biomedical applications.

Original languageEnglish (US)
Article numbereabd2091
JournalScience Advances
Volume7
Issue number2
DOIs
StatePublished - Jan 6 2021
Externally publishedYes

ASJC Scopus subject areas

  • General

Fingerprint

Dive into the research topics of 'Ultrabright Au@Cu<sub>14</sub> nanoclusters: 71.3% phosphorescence quantum yield in non-degassed solution at room temperature'. Together they form a unique fingerprint.

Cite this