Enhanced dispersity of gold nanoparticles modified by omega-carboxyl alkanethiols under the impact of poly(ethylene glycol)s

doi:10.1166/jnn.2007.637

CORC > 化学研究所 > 中国科学院化学研究所

	Enhanced dispersity of gold nanoparticles modified by omega-carboxyl alkanethiols under the impact of poly(ethylene glycol)s
	Li, Dongxiang ; He, Qiang ; Zhu, Haifeng ; Tao, Cheng ; Li, Junbai
刊名	JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
	2007-09-01
卷号	7 期号:9 页码:3089-3094
关键词	Gold Nanoparticles Dispersity Carboxyl Alkanethiol Nonionic Surfactant Poly(Ethylene Glycol)
ISSN号	1533-4880
DOI	10.1166/jnn.2007.637
英文摘要	The physisorption of nonionic surfactant poly(ethylene glycol) (PEG) series and the chemisorption of carboxyl-terminated alkanethiols on surface of gold nanoparticles (AuNPs) were investigated. The physical adsorption of oligo(ethylene glycol) moieties introduced a tiny red shift of surface plasmon resonance (SPR) of AuNPs, indicating the formation of a protective layer of PEG molecules around gold surface. The subsequent chemisorption of to-carboxyl alkanethiols was performed under the protection of PEG molecules, and the aggregation of metal nanoparticles did not appear by TEM observation. The successful adsorption of (omega-carboxyl alkanethiol on gold surface was demonstrated according to FT-IR spectrum and the prior adsorbed PEG molecules could be washed out by centrifugation. Furthermore, the presence of nonionic surfactant even displayed a protective role in centrifugal process. The dispersity of modified AuNPs with peripheral functional groups was enhanced under the protection of PEG molecules as an important advantage in further biological applications.
语种	英语
出版者	AMER SCIENTIFIC PUBLISHERS
WOS记录号	WOS:000250388400008
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/62827]
专题	中国科学院化学研究所
通讯作者	Li, Junbai
作者单位	1.CAS, Key Lab Colloid & Interface Sci, Inst Chem, Int Joint Lab,Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China 2.Max Planck Inst Colloids & Interfaces, D-14476 Golm, Germany
推荐引用方式 GB/T 7714	Li, Dongxiang,He, Qiang,Zhu, Haifeng,et al. Enhanced dispersity of gold nanoparticles modified by omega-carboxyl alkanethiols under the impact of poly(ethylene glycol)s[J]. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,2007,7(9):3089-3094.
APA	Li, Dongxiang,He, Qiang,Zhu, Haifeng,Tao, Cheng,&Li, Junbai.(2007).Enhanced dispersity of gold nanoparticles modified by omega-carboxyl alkanethiols under the impact of poly(ethylene glycol)s.JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,7(9),3089-3094.
MLA	Li, Dongxiang,et al."Enhanced dispersity of gold nanoparticles modified by omega-carboxyl alkanethiols under the impact of poly(ethylene glycol)s".JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 7.9(2007):3089-3094.