Theory of electric characteristics of the lipid/PVC/DOPP membrane and PVC/DOPP membrane in response to taste stimuli
Theory of electric characteristics of the lipid/PVC/DOPP membrane and PVC/DOPP membrane in response to taste stimuli
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DOI：
10.1016/0301-4622(96)00026-9
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发表时间：
1996-08-30
影响因子：
3.8
通讯作者：
Toko, K
中科院分区：
文献类型：
--
作者：
Oohira, K;Toko, K
从理论上研究了聚氯乙烯(PVC)/二辛基苯基膦酸脂/聚氯乙烯/聚氯乙烯/二辛基苯基膦酸脂复合膜对氯化钠和奎宁的电学响应特性。我们发展了一种同时考虑膜表面电势和膜内扩散势的理论，并成功地解释了观测数据。随着氯化钠浓度的增加，脂膜/聚氯乙烯/掺杂膜通过H+的解离从弱电荷态转变为全电荷态。奎宁与聚氯乙烯/多普膜之间的疏水相互作用足以克服电斥力。
Electric characteristics of two kinds of membranes in response to NaCl and quinine were theoretically studied; one membrane composed of polyvinyl chloride (PVC) and dioctylphenylphosphonate (DOPP), and the other a lipid/PVC/DOPP membrane containing PVC, DOPP and a negatively charged lipid. We develop a theory by taking into account both the surface electric potential and the diffusion potential within the membrane and succeed in interpreting the observed data. On increasing the NaCl concentration, the lipid/PVC/DOPP membrane changes from weakly charged state to fully charged state by dissociation of H+ from the lipids. The hydrophobic interaction between quinine and the PVC/DOPP membrane was strong enough to overcome the electric repulsion.