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首页> 外文期刊>Electroanalysis >Mediated electron transfer across supported bilayer lipid membrane with TCNQ-based organometallic compounds
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Mediated electron transfer across supported bilayer lipid membrane with TCNQ-based organometallic compounds

机译：基于TCNQ的有机金属化合物介导的通过支撑的双层脂质膜的电子转移

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摘要

Supported bilayer lipid membrane (s-BLM) containing one-dimensional compound 1, TCNQ-based (TCNQ=7,7,8,8- tetracyanoquinodimethane) organometallic compound {(Cu_2(μ-Cl)(μ-dppm)_2)(μ_2-TCNQ)}_∞, was prepared and characterized on the self-assembled monolayer (SAM) of 1-octadecylmercaptan (C_(18)H_(37)SH) deposited onto Au electrode. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) results showed that the compound 1, dotted inside s-BLM, can act as mediator for electron transfer across the membrane. Two redox peaks and the charge-transfer resistance of 400 kΩ were observed for compound 1 inside s-BLM. The mechanism of the electron transfer across s-BLM by TCNQ is by electron hopping while TCNQ-based organometallic compound is by conducting. Further conclusion drawn from this finding is that the TCNQ-based organometallic compound embedded inside s-BLM exhibits excellent electron transfer ability than that of free TCNQ. This opens a new path for the development of s-BLM sensor and/or biosensor by incorporation with TCNQ-based organometallic compounds.
机译：包含一维化合物1，TCNQ基（TCNQ = 7,7,8,8-四氰基喹二甲烷）有机金属化合物{（Cu_2（μ-Cl）（μ-dppm）_2）（制备了μ_2-TCNQ）} _∞并对其进行了表征，并将其沉积在Au电极上的1-十八烷基硫醇（C_（18）H_（37）SH）的自组装单分子膜（SAM）上。循环伏安法（CV）和电化学阻抗谱（EIS）结果表明，点缀在s-BLM内部的化合物1可以充当电子跨膜传输的介质。对于s-BLM内部的化合物1，观察到两个氧化还原峰和400kΩ的电荷转移电阻。 TCNQ通过s-BLM转移电子的机理是通过电子跳跃，而TCNQ基有机金属化合物是通过传导。从该发现得出的进一步结论是，嵌入在s-BLM中的TCNQ基有机金属化合物比游离TCNQ具有优异的电子转移能力。通过与基于TCNQ的有机金属化合物的结合，这为s-BLM传感器和/或生物传感器的开发开辟了一条新途径。

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