ICCAS OpenIR
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
2007-09-01
Source PublicationJOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
ISSN1533-4880
Volume7Issue:9Pages:3089-3094
AbstractThe 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.
KeywordGold Nanoparticles Dispersity Carboxyl Alkanethiol Nonionic Surfactant Poly(Ethylene Glycol)
DOI10.1166/jnn.2007.637
Indexed BySCI
Language英语
WOS IDWOS:000250388400008
PublisherAMER SCIENTIFIC PUBLISHERS
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/62828
Collection中国科学院化学研究所
Corresponding AuthorLi, Junbai
Affiliation1.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
Recommended Citation
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.
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