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题名: Open-tubular capillary electrochromatography using a capillary coated with octadecylamine-capped gold nanoparticles
作者: Qu, Qishu1, 2;  Zhang, Xinxin1;  Shen, Ming1;  Liu, Yin1;  Hu, Xiaoya1;  Yang, Gongjun1;  Wang, Chengyin1;  Zhang, Yukui2;  Yan, Chao2, 3
关键词: gold nanoparticle ;  octaclecylamine ;  open-tubular capillary electrochromatography
刊名: ELECTROPHORESIS
发表日期: 2008-02-01
DOI: 10.1002/elps.200700409
卷: 29, 期:4, 页:901-909
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine ;  Physical Sciences
类目[WOS]: Biochemical Research Methods ;  Chemistry, Analytical
研究领域[WOS]: Biochemistry & Molecular Biology ;  Chemistry
英文摘要: octadecylamine-capped gold nanoparticles (ODA-Au-NPs) were prepared and characterized by using UV-Vis adsorption spectrum, transmission electron chromatography (TEM), SEM, and FT-IR. A simple but robust hydrophobic coating was easily developed by flushing a capillary with a solution of ODA-Au-NPs, because the positive charges were carried by the nanoparticles which strongly adsorb to the negatively charged inner surface of a fused-silica capillary via electrostatic and hydrophobic interactions. The chromatographic characteristics of the coated capillary was investigated by varying the experimental parameters such as buffer pH, buffer concentration, and percentage of organic modifier in the mobile phase. The results show that (i) resolution between thiourea and naphthalene is almost the same when comparing the electrochromatograms obtained using pH 7 buffer as mobile phase after and before the capillary column was operated using pH 11 and 3 mobile phase; (ii) no significant changes in retention time and deterioration in peak efficiency were found after 60 runs of test aromatic mixtures; and (iii) column efficiency up to 189 000 theoretical plates/meter for testosterone was obtained. All of the results indicated that the coating could act as a stable stationary phase for open tubular CEC as well as for bioanalysis.
关键词[WOS]: TITANIUM-DIOXIDE NANOPARTICLES ;  ADSORBED STATIONARY PHASES ;  DOUBLE-STRANDED DNA ;  ELECTROKINETIC CHROMATOGRAPHY ;  ELECTROOSMOTIC FLOW ;  PSEUDOSTATIONARY PHASE ;  LIQUID-CHROMATOGRAPHY ;  SILICA NANOPARTICLES ;  COLUMN EFFICIENCY ;  SEPARATION
语种: 英语
WOS记录号: WOS:000253575200019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140943
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Yangzhou Univ, Coll Chem & Chem Engn, Jiangsu Key Lab Environm Mat & Environm Engn, Yangzhou 225002, Peoples R China
2.Chinese Acad Sci, Natl Chromatog R&A Ctr, Dalian Inst Chem Phys, Dalian, Peoples R China
3.Shanghai Jiao Tong Univ, Sch Pharm, Shanghai, Peoples R China

Recommended Citation:
Qu, Qishu,Zhang, Xinxin,Shen, Ming,et al. Open-tubular capillary electrochromatography using a capillary coated with octadecylamine-capped gold nanoparticles[J]. ELECTROPHORESIS,2008,29(4):901-909.
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