摘要
In the TCNQ-modified BLM, the voltammetric response is different due to the dif-ferent methods used to prepare the membrane forming solution. The direct and indirect dissolved methods result in irreversible and reversible responses respectively. These results can be explained by the different styles of the orientation of TCNQ in the membrane. The reversible response is controlled by the diffusion of electroactive species in the interior of the membrane. When MB is used to modify the BLM, very complex voltammograms are obtained. The intersection of the voltammetric curves can be regarded to be owing to the appearance of new phase in the membrane caused by MB. But it disappears at lower scan rate. Peak current increases with decreasing scan rate. This indicates that the resistance of the membrane at lower scan rate is lower than that at higher scan rate. Asymmetric curve of MB incorporated BLM is ascribed to the different rates of redox reaction at the two membrane/solution interfaces.
In the TCNQ-modified BLM, the voltammetric response is different due to the dif-ferent methods used to prepare the membrane forming solution. The direct and indirect dissolved methods result in irreversible and reversible responses respectively. These results can be explained by the different styles of the orientation of TCNQ in the membrane. The reversible response is controlled by the diffusion of electroactive species in the interior of the membrane. When MB is used to modify the BLM, very complex voltammograms are obtained. The intersection of the voltammetric curves can be regarded to be owing to the appearance of new phase in the membrane caused by MB. But it disappears at lower scan rate. Peak current increases with decreasing scan rate. This indicates that the resistance of the membrane at lower scan rate is lower than that at higher scan rate. Asymmetric curve of MB incorporated BLM is ascribed to the different rates of redox reaction at the two membrane/solution interfaces.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1997年第4期362-365,共4页
Acta Physico-Chimica Sinica
基金
国家自然科学基金
关键词
双层类脂膜
磷脂膜
BLM
伏安行为
染料
TCNQ
Bilayer lipid membranes (BLM), Cyclic voltammetry, Electron transfer,Dye, TCNQ
