Two-Step Synthesis of Narrow Size Distribution Nanoflowers Using a Tree-Type Multi-Amine-Head Surfactant as a Template

doi:10.1021/cg2003589

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	Two-Step Synthesis of Narrow Size Distribution Nanoflowers Using a Tree-Type Multi-Amine-Head Surfactant as a Template
	Jia, Wenfeng; Li, Jinru; Lin, Guanhua; Jiang, Long
刊名	CRYSTAL GROWTH & DESIGN
	2011-09-01
卷号	11 期号:9 页码:3822-3827
ISSN号	1528-7483
DOI	10.1021/cg2003589
英文摘要	Unique, narrow polydispersity, hierarchical gold nanoflowers were synthesized by a two-step method using a tree-type multi-amine surfactant (C18N3) as the template and ascorbic acid (AA) as the reductant. Upon the addition of a stronger reductant AA, the C18N3-HAuCl4 composite changed to a black color, due to the gold nanoflower formation. Under a specific concentration ratio of C18N3, HAuCl4, and AA, narrow polydispersity flower-like gold structures were obtained. These nanoflowers were stable as an aqueous solution for months, with no deformation to particle size and no obvious change in the surface morphology. The experimental results demonstrated that thecomplexation between C18N3 and HAuCl4 is essential for the formation of gold nanoflowers with a narrow size distribution. The morphology and size of the composites can be easily adjusted by changing the concentration of C18N3, HAuCl4, and AA. The growth of nanoflowers is discussed in terms of two steps: the formation of complexes between C18N3 and HAuCl4, which determines the core size of the nanoflowers, and the surface nanocrystal growth, due to the reduction of HAuCl4 by AA, which determines the thickness and morphology of nanoflower surface layers. In the measurement of surface-enhanced Raman scattering (SERS) using rhodamine 6G, the gold nanoflowers exhibited a significant enhancement factor, indicating their potential in biosensing and nanodevice applications.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000294647600025
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/71499]
专题	中国科学院化学研究所
通讯作者	Jiang, Long
作者单位	Chinese Acad Sci, Inst Chem, Key Lab Colloids & Surfaces, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Jia, Wenfeng,Li, Jinru,Lin, Guanhua,et al. Two-Step Synthesis of Narrow Size Distribution Nanoflowers Using a Tree-Type Multi-Amine-Head Surfactant as a Template[J]. CRYSTAL GROWTH & DESIGN,2011,11(9):3822-3827.
APA	Jia, Wenfeng,Li, Jinru,Lin, Guanhua,&Jiang, Long.(2011).Two-Step Synthesis of Narrow Size Distribution Nanoflowers Using a Tree-Type Multi-Amine-Head Surfactant as a Template.CRYSTAL GROWTH & DESIGN,11(9),3822-3827.
MLA	Jia, Wenfeng,et al."Two-Step Synthesis of Narrow Size Distribution Nanoflowers Using a Tree-Type Multi-Amine-Head Surfactant as a Template".CRYSTAL GROWTH & DESIGN 11.9(2011):3822-3827.