Unraveling the Impact of Gold(I)-Thiolate Motifs on the Aggregation-Induced Emission of Gold Nanoclusters.

Wu, Zhennan; Yao, Qiaofeng; Chai, Osburg Jin Huang; Ding, Nan; Xu, Wen; Zang, Shuangquan; Xie, Jianping

Wu, Zhennan; Yao, Qiaofeng; Chai, Osburg Jin Huang; Ding, Nan; Xu, Wen; Zang, Shuangquan; Xie, Jianping.

Afiliação

Wu Z; Department of Chemical and Biomolecular and Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
Yao Q; Department of Chemical and Biomolecular and Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
Chai OJH; Department of Chemical and Biomolecular and Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
Ding N; State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China.
Xu W; State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China.
Zang S; College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China.
Xie J; Department of Chemical and Biomolecular and Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.

Angew Chem Int Ed Engl ; 59(25): 9934-9939, 2020 Jun 15.

Article em En | MEDLINE | ID: mdl-32011796

ABSTRACT

ABSTRACT

Aggregation-induced emission (AIE) provides an efficient strategy to synthesize highly luminescent metal nanoclusters (NCs), however, rational control of emission energy and intensity of metal NCs is still challenging. This communication reveals the impact of surface AuI -thiolate motifs on the AIE properties of Au NCs, by employing a series of water-soluble glutathione (GSH)-coordinated Au complexes and NCs as a model ([Au10 SR10 ], [Au15 SR13 ], [Au18 SR14 ], and [Au25 SR18 ]- , SR=thiolate ligand). Spectroscopic investigations show that the emission wavelength of Au NCs is adjustable from visible to the near-infrared II (NIR-II) region by controlling the length of the AuI -SR motifs on the NC surface. Decreasing the length of AuI -SR motifs also changes the origin of cluster luminescence from AIE-type phosphorescence to Au0 -core-dictated fluorescence. This effect becomes more prominent when the degree of aggregation of Au NCs increases in solution.

Palavras-chave

aggregation-induced emission; gold nanoclusters; luminescent nanomaterials; metal nanoclusters; surface motifs

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Texto completo: 1 Bases de dados: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Singapura