科学通报(英文版)2024，Vol.69Issue(1) ：40-48.DOI:10.1016/j.scib.2023.11.014

Biomimetic crystallization for long-pursued-COOH-functionalized gold nanocluster with near-infrared phosphorescence

Wei-Dong Tian Wei-Dan Si Shana Havenridge Chengkai Zhang Zhi Wang Christine M.Aikens Chen-Ho Tung Di Sun
科学通报(英文版)2024，Vol.69Issue(1) ：40-48.DOI:10.1016/j.scib.2023.11.014
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Biomimetic crystallization for long-pursued-COOH-functionalized gold nanocluster with near-infrared phosphorescence

Wei-Dong Tian 1Wei-Dan Si 1Shana Havenridge 2Chengkai Zhang 1Zhi Wang 1Christine M.Aikens 2Chen-Ho Tung 1Di Sun1
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作者信息

  • 1. School of Chemistry and Chemical Engineering,State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China
  • 2. Department of Chemistry,Kansas State University,Manhattan KS 66506,USA
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Abstract

As an interdisciplinary product,water-soluble gold nanoclusters(AuNCs)stabilized by ligands containing carboxyl(-COOH)group have garnered significant attention from synthetic chemists and biologists due to their immense potential for biomedical applications.However,revealing the crystallographic struc-tures of-COOH-functionalized AuNCs remains a bottleneck.Herein,we successfully applied the salting-out method to obtain a series of high-quality single crystals of-COOH-functionalized Au25 nan-oclusters and revealed their crystallographic structures.Particularly,K3Au25(2-Hmna)9(mna)6]-(Au25a)protected by 2-mercaptonicotinic acid features an unprecedented tetrameric Au4(SRS)3(SRS,N)2 staple motifs surrounding the icosahedral Au13 kernel,breaking the traditional perception on the structure of Au25(SR)18.Au25a exhibits a distinct near-infrared emission at 970 nm with long lifetime of 8690 ns,which have been studied by transient absorption spectroscopy and time-dependent density functional theory.This work compensates for the research gap in the experimental structure of-COOH-functionalized AuNCs and opens up a new avenue to explore their structure-property correlations.

Key words

Water-soluble gold nanoclusters/Near-infrared phosphorescence/Salting-out method

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基金项目

Analytical Center for Structural Constituent and Physical Property of Core Facilities Sharing Platform,Shandong University f(TAs)

Analytical Center for Structural Constituent and Physical Property of Core Facilities Sharing Platform,Shandong University f(2104573S)

National Natural Science Foundation of China(22201159)

National Natural Science Foundation of China(22171164)

National Natural Science Foundation of China(22325105)

National Natural Science Foundation of China(52261135637)

Fok Ying Tong Education Foundation(171009)

Natural Science Foundation of Shandong Province(ZR2019ZD45)

Natural Science Foundation of Shandong Province(ZR2020ZD35)

Natural Science Foundation of Shandong Province(JQ201803)

Natural Science Foundation of Shandong Province(ZR2017MB061)

Taishan Scholar Project of Shandong Province of China(tsqn201812003)

Taishan Scholar Project of Shandong Province of China(ts20190908)

National Postdoctoral Innovative Talents Support Program(BX2021171)

China Postdoctoral Science Foundation(2021M700081)

出版年

2024
科学通报(英文版)
中国科学院

科学通报(英文版)

CSTPCD
ISSN：1001-6538
参考文献量48
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