Stem-directed growth of highly fluorescent silver nanoclusters for versatile logic devices

被引：30

作者：

Li, Jing ^{[1
]}

Jia, Xiaofang ^{[1
,2
]}

Li, Dongyue ^{[1
,2
]}

Ren, Jiangtao ^{[1
,2
]}

Han, Yanchao ^{[1
,2
]}

Xia, Yong ^{[1
]}

Wang, Erkang ^{[1
]}

机构：

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

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

来源：

NANOSCALE | 2013年 / 5卷 / 13期

基金：

中国国家自然科学基金;

关键词：

ONE-POT SYNTHESIS; NUCLEIC-ACID; DNA; EMISSION; CLUSTERS; AG+;

D O I：

10.1039/c3nr00998j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This work described for the first time the stem-directed growth of silver nanoclusters (AgNCs) with high brightness using the well-chosen hairpin DNA structure. In comparison with the corresponding double-stranded (ds) DNA capped AgNCs, the fluorescence emission of hairpin DNA structure templated AgNCs were lighted up with 12.5-fold enhancement fluorescent intensity by sequence modification with T-loop. It provided a new prospect for precise placement of nanoscale optical elements onto DNA scaffolds. And these DNA protected AgNCs exhibited the base sequence, strand length and microenvironment-dependent fluorescent properties. Benefiting from these properties, versatile logic gates (OR, NOT, INHIBIT, XNOR, IMPLICATION) were constructed using different ions as inputs with AgNCs as signal transducer.

引用

页码：6131 / 6138

页数：8

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