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Structural distortion and electron redistribution in dual-emitting gold nanoclusters.

ABSTRACT: Deciphering the complicated excited-state process is critical for the development of luminescent materials with controllable emissions in different applications. Here we report the emergence of a photo-induced structural distortion accompanied by an electron redistribution in a series of gold nanoclusters. Such unexpected slow process of excited-state transformation results in near-infrared dual emission with extended photoluminescent lifetime. We demonstrate that this dual emission exhibits highly sensitive and ratiometric response to solvent polarity, viscosity, temperature and pressure. Thus, a versatile luminescent nano-sensor for multiple environmental parameters is developed based on this strategy. Furthermore, we fully unravel the atomic-scale structural origin of this unexpected excited-state transformation, and demonstrate control over the transition dynamics by tailoring the bi-tetrahedral core structures of gold nanoclusters. Overall, this work provides a substantial advance in the excited-state physical chemistry of luminescent nanoclusters and a general strategy for the rational design of next-generation nano-probes, sensors and switches.

SUBMITTER: Li Q

PROVIDER: S-EPMC7283347 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Structural distortion and electron redistribution in dual-emitting gold nanoclusters.

Li Qi Q Zhou Dongming D Chai Jinsong J So Woong Young WY Cai Tong T Li Mingxing M Peteanu Linda A LA Chen Ou O Cotlet Mircea M Wendy Gu X X Zhu Haiming H Jin Rongchao R

Nature communications 20200609 1

Deciphering the complicated excited-state process is critical for the development of luminescent materials with controllable emissions in different applications. Here we report the emergence of a photo-induced structural distortion accompanied by an electron redistribution in a series of gold nanoclusters. Such unexpected slow process of excited-state transformation results in near-infrared dual emission with extended photoluminescent lifetime. We demonstrate that this dual emission exhibits hig ...[more]

PMID: 32518297

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Dataset Information

Structural distortion and electron redistribution in dual-emitting gold nanoclusters.

Publications

Structural distortion and electron redistribution in dual-emitting gold nanoclusters.

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