Highly Fluorescent Gold Cluster Assembly

被引：102

作者：

Chang, Hogeun ^{[1
,2
,3
]}

Karan, Niladri S. ^{[1
,2
,3
]}

Shin, Kwangsoo ^{[1
,2
,3
]}

Bootharaju, Megalamane S. ^{[1
,2
,3
]}

Nah, Sanghee ^{[4
]}

Chae, Sue In ^{[1
,2
,3
]}

Baek, Woonhyuk ^{[1
,2
,3
]}

Lee, Sanghwa ^{[1
,2
,3
]}

Kim, Junhee ^{[1
,2
,3
]}

Son, Young Ju ^{[1
,2
,3
]}

Kang, Taegyu ^{[1
,2
,3
]}

Ko, Giho ^{[1
,2
,3
]}

Kwon, Seung-Hae ^{[4
]}

Hyeon, Taeghwan ^{[1
,2
,3
]}

机构：

[1] Inst Basic Sci IBS, Ctr Nanoparticle Res, Seoul 08826, South Korea

[2] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 08826, South Korea

[3] Seoul Natl Univ, Inst Chem Proc, Seoul 08826, South Korea

[4] Korea Basic Sci Inst KBSI, Seoul Ctr, Seoul 02841, South Korea

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2021年 / 143卷 / 01期

关键词：

AGGREGATION-INDUCED EMISSION; ROOM-TEMPERATURE PHOSPHORESCENCE; AU(I)-THIOLATE COMPLEXES; METAL NANOCLUSTERS; QUANTUM YIELD; DIRECTED SYNTHESIS; ORGANIC MATERIALS; PHOTOLUMINESCENCE; NANOPARTICLES; LUMINESCENCE;

D O I：

10.1021/jacs.0c10907

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The photoluminescence (PL) of metal nanoclusters (NCs), originating from their molecule-like electronic structure, is one of the most intriguing properties of NCs. Although various strategies such as tailoring the size, structure, and chemical environment of NCs have shown to improve the PL, their quantum yields (QYs) are still lagging far behind those of conventional luminescent materials, including quantum dots and organic fluorophores. Herein, we report the synthesis of highly luminescent gold cluster assembly (GCA) from Zn2+-tion-mediated assembly of Au-4 (SRCOO-)(4) clusters using mercaptocarboxylic acid as a protective ligand and reductant as well as a growth suppressor. The synergetic combination of unique aurophilic interactions among Au(4)clusters and the rigidified chemical environment induced by metal ion chelation through carboxylate groups is responsible for the ultrabright greenish-blue fluorescence with a QY up to 90%. Furthermore, the unique flexibility of dis/reassembly and the aggregation-dependent strong fluorescence of GCA offer a great potential for applications in biodegradable and trackable drug delivery systems.

引用

页码：326 / 334

页数：9

共 86 条

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