Galvanic replacement mediated growth of dendritic gold nanostructures with a three-fold symmetry and their applications to SERS

被引：28

作者：

Bai, Xiangtao ^{[1
]}

Gao, Yanan ^{[1
]}

Zheng, Liqiang ^{[1
]}

机构：

[1] Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China

来源：

CRYSTENGCOMM | 2011年 / 13卷 / 10期

基金：

中国国家自然科学基金;

关键词：

NANOPARTICLES; AG; NANOCRYSTALS; SURFACTANT; HOLLOW; AU; TRANSFORMATION; ENHANCEMENT; FABRICATION; MORPHOLOGY;

D O I：

10.1039/c1ce05084b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hierarchical, three-fold symmetrical, single-crystalline gold dendrites are synthesized on different metal substrates including Al, Zn, and Ni in a mixture of ethanol and water with the assistance of an ionic liquid. Structural characterizations suggest that the obtained gold dendrites are grown along the < 211 > directions. Such < 211 >-oriented gold dendrites are seldom reported. Both the metal substrate and the volume ratio of ethanol and water have demonstrated a significant effect on the dendrite morphologies. The obtained gold dendrites are found to yield large SERS enhancement factors for rhodamine 6G (R6G) and the morphology of the branches is a key for the enhancement.

引用

页码：3562 / 3568

页数：7

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