White-Emitting Gold Nanocluster Assembly with Dynamic Color Tuning.

Zhong, Yuan; Wang, Xue; Li, Tingting; Yao, Qiaofeng; Dong, Weinan; Lu, Min; Bai, Xue; Wu, Zhennan; Xie, Jianping; Zhang, Yu

Zhong, Yuan; Wang, Xue; Li, Tingting; Yao, Qiaofeng; Dong, Weinan; Lu, Min; Bai, Xue; Wu, Zhennan; Xie, Jianping; Zhang, Yu.

Affiliation

Zhong Y; State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.
Wang X; State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.
Li T; College of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130012, China.
Yao Q; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Key Laboratory of Organic Integrated Circuits, Ministry of Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China.
Dong W; State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.
Lu M; State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.
Bai X; State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.
Wu Z; State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.
Xie J; Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585.
Zhang Y; State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.

Nano Lett ; 24(23): 6997-7003, 2024 Jun 12.

Article in En | MEDLINE | ID: mdl-38721805

ABSTRACT

ABSTRACT

We report that constructed Au nanoclusters (NCs) can afford amazing white emission synergistically dictated by the Au(0)-dominated core-state fluorescence and Au(I)-governed surface-state phosphorescence, with record-high absolute quantum yields of 42.1% and 53.6% in the aqueous solution and powder state, respectively. Moreover, the dynamic color tuning is achieved in a wide warm-to-cold white-light range (with the correlated color temperature varied from 3426 to 24â¯973 K) by elaborately manipulating the ratio of Au(0) to Au(I) species and thus the electron transfer rate from staple motif to metal kernel. This study not only exemplifies the successful integration of multiple luminescent centers into metal NCs to accomplish efficient white-light emission but also inspires a feasible pathway toward customizing the optical properties of metal NCs by regulating electron transfer kinetics.

Key words

color temperature tuning; gold nanoclusters; high quantum efficiency; white-light emission

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