全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电化学  2007 

直流偏压对于在玻碳电极上双层类脂膜成膜过程的影响

, PP. 6-11

Keywords: 双层类脂膜,循环伏安,电化学阻抗谱,直流偏压

Full-Text   Cite this paper   Add to My Lib

Abstract:

应用循环伏安法和电化学阻抗谱研究了直流偏压对卵磷脂在玻碳电极表面自组装成膜过程及其结构的影响.实验发现:无论在正偏压还是负偏压条件下,卵磷脂在玻碳电极上均可组装成膜.施加正偏压时,由于玻碳电极表面所带的正电荷与卵磷脂端基之间的静电作用,使得卵磷脂在电极表面倾向于形成双层的类脂膜,并在0.4V偏压下电极阻抗达到最大值.继续增大电极正向偏压,s-BLM缺陷增加,以至趋于被击穿.提出了适宜的等效电路,并据此非线性拟合电极过程,求得部分阻抗的模型参数.研究发现:膜电容和电荷传递电阻呈现良好的互补效应.

References

[1]  Tien HT,Salamon Z.Formation of self-assembled lipidbilayers on solid substrates[J].Bioelectrochem Bioen-erg,1989,22:211.
[2]  Salmon Z,Tollin G.Interfacial electrochemistry of cyto-chrome c at a lipid bilayer modified electrode:Effect ofincorporation of negative charges into the bilayer on cy-clic voltammetric parameters[J].BioelectrochemBioenerg,1991,26:321.
[3]  Cai H(蔡红),Wang B(王斌),Zhang Z J(张占军),et al.Electrochemical studies and applications of ionicsensor based on the solid supported bilayer lipid mem-brans[J].Chin J Appl Chem(应用化学),2003,4:307.
[4]  Cai H(蔡红),Zhang Z J(张占军),Wang B(王斌),et al.Studies of electrochemical sensoral behavior ofhistamine based on the solid supported bilayer lipidmembrane[J].Chin J Chem Phys(化学物理学报),2004,2:206.
[5]  Siontorou C G,Oliveira Brett A M,Nikolelis D P.E-valuation of a glassy carbon electrode modified by a bi-layer lipid membrane with incorporated DNA[J].Talan-ta,1996,43:1137.
[6]  Castillo J D,Rodriguez A,Roome C A,et al.Lipidfilms as transducers for detection of antigen-antibody andenzyme-substrate reactions[J].Science,1966,153:185.
[7]  Toro-goyco E,Rodriguez A,Castillo J D.Detection ofanti-insulin antibodies with a new electrical technique:Lipid membrane conductometry[J].Biochem BiophysRes Commun,1996,23:341.
[8]  Tong Yuehong,Han Xiaojun,Song Yonghai,et al.Characterization and property of DNAincorporated bilay-er lipid membranes[J].Biophys Chem,2003,105:1.
[9]  Liu Xiaohua,Huang Weimin,Wang Erkang.An elec-trochemical study on the interaction of surfactin with asupported bilayer lipid membrane on a glassy carbon e-lectrode[J].Electroanal Chem,2005,577:349.
[10]  Dimitrios P Nikolelis,Spyros Pantoulias,Ulrich J Krull,et al.Electrochemical transduction of the interactions ofthe sweeteners acesulfame-K,saccharin and cyclamatewith bilayer lipid membranes(BLMs)[J].Electro-chimica Acta,2001,46:1025.
[11]  Wang Jianguo,Wang Li,Liu Shaoqin,et al.Interactionof K7Fe3+P2W17O62H2with supported bilayer lipidmembranes on platinum electrode[J].BiophysicalChemistry,2003,106:31.
[12]  Diao Peng,Jiang Dianlu,Cui Xiaoli,et al.Cyclic vol-tammetry and a.c.impe dance studies of Ca2+-inducedion channels on Pt-BLM[J].Bioelectrochem Bioenerg,1998,45:173.
[13]  Bordi F,Cametti C,Gliozzi A.Impedance measure-ments of self-assembled lipid bilayer membranes on thetip of an electrode[J].Bioelectrochemistry,2002,57:39.
[14]  Gerald Wiegand,Noah Arribas-Layton,Heiko Hille-brandt,et al.Electrical properties of supported lipid bi-layer membranes[J].J Phys Chem B,2002,106:4245.
[15]  Zhang Z J,Huang J,Wu X Z,et al.Impedance spec-tra of the reduction of adrenochrome[J].J ElectrochemSoc,1999,146:256.
[16]  Plant A L.Supported hybrid bilayer membranes as rug-ged cell membrane mimics[J].Langmuir,1999,15:5128.
[17]  Boubour E,Lennox R B.Insulating properties of self-assembled monolayers monitored by impedance spec-troscopy[J].Langmuir,2000,16:4222.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133