QIBEBT-IR
Preparation of phase diagram of gold nanorods in mixture solvent of DMSO and water and its application for efficient surface-modification
Shou, Qinghui1; Ebara, Mitsuhiro2; Wang, Jiaqi1; Wang, Qinggang1; Liang, Xiangfeng1; Liu, Huizhou1; Aoyagi, Takao2,3,4
2018-11-01
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
Volume457Pages:264-270
AbstractGold nanorods (AuNRs) have been widely studied in various biological and biomedical fields. The complete removal of a cationic binary surfactant cetyltrimethyl ammonium bromide (CTAB), which is strongly bound to prepared AuNRs, is necessary due to their cytotoxicity as well as further functionalization of the surface. Here, we report an appropriate procedure which can remove CTAB and modify the surface by omega-mercaptocarboxylic acid efficiently. The detachment mechanism of CTAB from AuNR surface varying with the volume ratio of dimethylsulfoxide (DMSO)/water (V-DMSO:V-Au(NRs)) and the concentration of CTAB was also studied. For samples after twice-centrifugation (C-CTAB = 15 mu M), CTAB thoroughly detached from AuNRs under the condition of V-D(MSO):V-AuNRs = 0.3-0.5, while AuNRs attained colloidal stability at either V-DMSO:V-AuNR(s) = 0-0.2 or 0.6-0.9. Especially, the complete removal of interdigitated CTAB bilayer was confirmed at V-DMSO:V-AuNRs = 0.5 by X-ray photoelectron spectroscopy surface composition analysis. Based on the colloidal stability of AuNRs related with the volume ratios of DMSO/water and CTAB concentration, the phase diagram of AuNRs was further drawn. Both the minimal and maximum DMSO-fraction thresholds for efficient removal of CTAB are generally increased with the increase of CTAB concentration. After the removal of CTAB, mercaptohexadecanoic acid (16-MHDA) was utilized for the further modification of AuNRs. In a wide range of CTAB concentration and with high DMSO fraction, there is no aggregation after the modification. This technique may be used to functionalize the surface of AuNRs for use in a diverse range of applications.
KeywordGold nanorods CTAB DMSO Phase-diagram Thiols Ligand-exchange
DOI10.1016/j.apsusc.2018.06.261
WOS KeywordREFRACTIVE-INDEX ; AQUEOUS-SOLUTION ; ASPECT-RATIO ; MICELLIZATION ; EXCHANGE ; GROWTH
Language英语
Funding ProjectMinistry of Education, Culture, Sports, Science and Technology (MEXT) Japan[23651142] ; Japan Society for the Promotion of Science (JSPS) through the "Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program)" ; Council for Science and Technology Policy (CSTP) ; National Natural Science Foundation of China[21676283]
WOS Research AreaChemistry ; Materials Science ; Physics
Funding OrganizationMinistry of Education, Culture, Sports, Science and Technology (MEXT) Japan ; Japan Society for the Promotion of Science (JSPS) through the "Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program)" ; Council for Science and Technology Policy (CSTP) ; National Natural Science Foundation of China
WOS SubjectChemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000441872300031
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/11988
Collection中国科学院青岛生物能源与过程研究所
Corresponding AuthorShou, Qinghui; Aoyagi, Takao
Affiliation1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol QIBEBT, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China
2.Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton MANA, Tsukuba, Ibaraki 3050044, Japan
3.Univ Tsukuba, Grad Sch Pure & Appl Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058577, Japan
4.Nihon Univ, Coll Sci & Technol, Dept Mat & Appl Chem, Chiyoda Ku, Tokyo 1018308, Japan
Recommended Citation
GB/T 7714
Shou, Qinghui,Ebara, Mitsuhiro,Wang, Jiaqi,et al. Preparation of phase diagram of gold nanorods in mixture solvent of DMSO and water and its application for efficient surface-modification[J]. APPLIED SURFACE SCIENCE,2018,457:264-270.
APA Shou, Qinghui.,Ebara, Mitsuhiro.,Wang, Jiaqi.,Wang, Qinggang.,Liang, Xiangfeng.,...&Aoyagi, Takao.(2018).Preparation of phase diagram of gold nanorods in mixture solvent of DMSO and water and its application for efficient surface-modification.APPLIED SURFACE SCIENCE,457,264-270.
MLA Shou, Qinghui,et al."Preparation of phase diagram of gold nanorods in mixture solvent of DMSO and water and its application for efficient surface-modification".APPLIED SURFACE SCIENCE 457(2018):264-270.
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