应用电化学方法在玻碳电极上修饰聚L-赖氨酸膜,以1-乙基-(3-二甲基氨基丙基)碳二亚胺盐酸盐做交联剂,固定氯过氧化物酶.修饰电极的循环伏安曲线呈现一对可逆的氧化还原峰,表明聚L-赖氨酸能够很好地促进氯过氧化物酶在电极表面的直接电子传递,这是一个受吸附控制并伴随有质子转移的准可逆电子传递过程.该电极有很好的稳定性,并能显著地电催化氧的电化学还原反应.
赵雯
,
吴霞琴
,
陆中庆
,
后雯璟
,
李和兴
. 氯过氧化物酶-聚L-赖氨酸/GC电极的电化学特性[J]. 电化学, 2010
, 16(1)
: 65
-69
.
DOI: 10.61558/2993-074X.2040
Poly-L-lysine(PLL) was electropolymerized onto the surface of glassy carbon(GC) electrode.1[(3-dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride(EDC) was used as a Cross-linking agent to immobilized Chloroperoxidase(CPO) onto the PLL/GC electrode.A pair of well-defined redox peaks was observed at CPO-PLL/GC electrode,which clearly suggested that PLL can promote the direct electron transfer between the CPO and the GC electrodes.The cyclic voltammetry results also showed that the electron transfer at CPO-PLL/GC is a surface adsorption-controlled quasi-reversible process,which is accompanied with proton transfer.The CPO-PLL/GC electrode exhibited a good electrochemical stability and excellently electrocatalytic activity for electrochemical reduction of O2.
[1]Cao Shu-yu(曹树煜),Liu Jun-hong(刘均洪).Bio-technology progress on applications of peroxidase[J].Journal of Chemical Industry&Engineering(化学工业与工程技术),2003,24(5):28-32.
[2]Lowell P Hager,David R Morris,Frederick S Brown,et al.ChloroperoxidaseⅡ.Utilization of halogen anions[J].Biological Chem,1966,241(8):1769-1777.
[3]Robert L Osborne,Gregory M Raner,Lowell P Hager,etal.C.fumago chloroperoxidase is also a dehaloperoxi-dase:oxidative dehalogenation of halophenols[J].J Am Chem Soc,2006,128(4):1036-1037.
[4]John H Dawson,Masanori Sono.Cytochrome P-450and chloroperoxidase:thiolate-ligated heme enzymes.Spec-troscopic determination of their active site structures and mechanistic implications of thiolate ligation[J].Chem Rev,1987,87(5):1255-1276.
[5]Lu Zhong-qing,Hou Wen-jing,Wu Xia-qin,et al.Elec-trochemistry of self-assembled ultra-thin films composed of chloroperoxidase and polyions[J].Chem Lett,2007,36(4):564-565.
[6]Zhang Hong-xia(张红霞),Wu Xia-qin(吴霞琴),Hou Wen-jing(后雯瞡),et al.Catalytic chlorination of MCD using chloroperoxidase coated single-wall carbon nano-tubes films on GC electrodes[J].Chemical J of Chinese University(高等学校化学学报),2008,29(9):1863-1865.
[7]Zhang Hong-xia(张红霞),Wu Xia-qin(吴霞琴),Hou Wen-jing(后雯瞡),et al.Direct electrochemistry of chloroperoxidase at GC electrode modified with SWNTs(in Chinese)[J].Electrochemistry(电化学),2008,14(4):383-387.
[8]Yang Liu(杨柳),Wu Xia-qin(吴霞琴),Wang Rong(王荣),et al.Ionic liquid modified GC electrode for the direct electrochemistry of chloroperoxidase[J].Chi-nese Chemical Letters(中国化学快报),2008,19(12):1483-1486.
[9]Sun Deng-ming(孙登明),Ma Wei(马伟),Zhang Zhen-xin(张振新).Cyclic voltammetric determination of do-pamine in drug using poly(L-lysine)modified electrode[J].Chinese Journal of Analytical Chemistry(分析化学),2006,34(5):668-670.
[10]Zhao Yan-xia(赵艳霞),Ma Xin-ying(马心英),Wang Qi(王琦),et al.Electrocatalytic oxidation to norepi-nephrine at a poly(L-lysine)modified electrode[J].Chinese Journal of Analysis Laboratory(分析实验室),2005,24(3):71-74.
[11]Wang Xiu-wen(王秀文),Yu Fen(余芬),Zhao Zhi-jie(赵志杰),et al.Electrochemical behavior of acet-aminophen at poly L-lysine-modified electrode and its detection[J].Chemistry&Bioengineering(化学与生物工程),2008,25(1):68-72.
[12]Peterson M Guto,Challa V Kumar,James F Rusling.Thermostable peroxidase-polylysine films for biocataly-sis at90℃[J].J Phys Chem B,2007,111(30):9125-9131.
[13]Abhay Vaze,Michael Parizo,James F Rusling.Enhanc-ed rates of electrolytic styrene epoxidation catalyzed by cross-linked myoglobin-poly(L-lysine)films in bicon-tinuous microemulsions[J].Langmuir,2004,20(25):10943-10948.
[14]Peterson M Guto,James F Rusling.Enzyme-like kinet-ics of ferryloxy myoglobin formation in films on elec-trodes in microemulsions[J].J Phys Chem B,2005,109(51):24457-24464.
[15]Abhay Vaze,James F Rusling.Microemulsion-controll-]ed reaction sites in biocatalytic films for electrochemi-cal reduction of vicinal dibromides[J].Langmuir,2006,22(25):10788-10795.
[16]Zhang Zhe,Salem Chouchane,Richard S Magliozzo,et al.Direct voltammetry and catalysis with mycobacteri-um tuberculosis catalase-peroxidase,peroxidases,and catalase in lipid films[J].Anal Chem,2002,74(1):163-170.
[17]Alan P Brown,Fred C Anson.Electron transfer kinetics with both reactant and product attached to the electrode surface[J].Journal of Electroanalytical Chemistry,1978,92(2):133-145.
