Cu Nanoclusters with Aggregation Induced Emission Enhancement

被引：540

作者：

Jia, Xiaofang ^{[1
,2
]}

Li, Jing ^{[1
]}

Wang, Erkang ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

SMALL | 2013年 / 9卷 / 22期

基金：

中国国家自然科学基金;

关键词：

SIZED GOLD NANOCLUSTERS; ONE-POT SYNTHESIS; INTERFACIAL SYNTHESIS; QUANTUM CLUSTERS; COPPER CLUSTERS; AU-25; CLUSTERS; NANOPARTICLES; FLUORESCENCE; NANOCRYSTALS; AU;

D O I：

10.1002/smll.201300896

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

A facile and versatile method for preparing water-soluble, stable, luminescent Cu nanoclusters (NCs) via the process of size-focusing etching from nonluminescent nanocrystals is presented. Using glutathione as a model ligand, the smallest cluster, Cu-2, is selectively synthesized to form a nearly monodisperse product, eliminating the need for tedious size fractionation. Evolution of photoluminescence and absorption spectra reveal that the formation of stable cluster species occurs through surface etching. Intriguingly, the as-prepared CuNCs exhibit an aggregation-induced emission enhancement effect. The CuNCs emit a faint light when dispersed in aqueous solution, but generate a striking fluorescence intensity enhancement upon aggregation. Armed with these attractive properties, the emissive CuNCs are expected to open new opportunities for the construction of light-emitting diodes, chemosensors, and bioimaging systems.

引用

页码：3873 / 3879

页数：7

共 39 条

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