Self-assembled epoxy-modified polymer coating on a poly(dimethylsiloxane) microchip for EOF inhibition and biopolymers separation

	Self-assembled epoxy-modified polymer coating on a poly(dimethylsiloxane) microchip for EOF inhibition and biopolymers separation
	Wu, Dapeng ; Qin, Jianhua ; Lin, Bingcheng
刊名	lab on a chip
	2007
卷号	7 期号:11 页码:1490-1496
英文摘要	a straightforward approach to generate a stable and protein- resistant poly(dimethylsiloxane) (pdms) surface using self- assembled hydrophilic polymers is demonstrated in this work. epoxy-modified polymers were directly adsorbed from aqueous solution onto plasma oxidized pdms based on h-bond interaction, and epoxies of polymer and silanols on oxidized pdms surface were crosslinked by heating at 110 degrees c. the coating process could be completed within half hour. poly(dimethylacrylamide-co-glycidyl methacrylate) (pdma-co-gma), poly(vinyl pyrrolidone)g-glycidyl methacrylate (pvp-g-gma) and poly(vinyl alcohol)-g-glycidyl methacrylate (pvaggma) (d. p. wu, b. x. zhao, z. p. dai, j. h. qin and b. c. lin, lab chip, 2006, 6, 942) were employed as examples here. unlike pdma, pvp, and pva themselves, these epoxy-modified hydrophilic polymers could be directly used as static surface coatings on oxidized pdms, and inhibited electroosmotic flow (eof) within ph 3 - 11. it was also found that hard baking of pdms at 150 degrees c for 24 hours before surface coating could greatly retard surface hydrophobicity recovery after oxygen plasma exposure, which strengthened epoxy-modified polymer coatings on oxidized pdms surface, and resulted in eof less than 0.2 x 10(-4) cm(2) v-1 s(-1) (ph 9.0) within two weeks. on epoxy-modified polymer coated pdms microchips, basic proteins, peptides and dna fragments could be separated satisfactorily, in which more than 2610 4 plates per 2 cm and less than 3% rsd (>8 runs) for migration time were obtained for lysozyme.
WOS标题词	science & technology ; life sciences & biomedicine ; physical sciences
类目[WOS]	biochemical research methods ; chemistry, multidisciplinary ; nanoscience & nanotechnology
研究领域[WOS]	biochemistry & molecular biology ; chemistry ; science & technology - other topics
关键词[WOS]	nonspecific protein adsorption ; capillary-zone-electrophoresis ; fused-silica capillaries ; large-scale integration ; microfluidic devices ; surface modification ; graft-polymerization ; mass-spectrometry ; pdms surface ; chips
收录类别	SCI
语种	英语
WOS记录号	WOS:000250428200022
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/140437]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Dalian, Peoples R China
推荐引用方式 GB/T 7714	Wu, Dapeng,Qin, Jianhua,Lin, Bingcheng. Self-assembled epoxy-modified polymer coating on a poly(dimethylsiloxane) microchip for EOF inhibition and biopolymers separation[J]. lab on a chip,2007,7(11):1490-1496.
APA	Wu, Dapeng,Qin, Jianhua,&Lin, Bingcheng.(2007).Self-assembled epoxy-modified polymer coating on a poly(dimethylsiloxane) microchip for EOF inhibition and biopolymers separation.lab on a chip,7(11),1490-1496.
MLA	Wu, Dapeng,et al."Self-assembled epoxy-modified polymer coating on a poly(dimethylsiloxane) microchip for EOF inhibition and biopolymers separation".lab on a chip 7.11(2007):1490-1496.