Conducting polymers as antennas for probing biophysical activities.
Conducting polymers as antennas for probing biophysical activities.
复制标题
导电聚合物作为探测生物物理活动的天线。
DOI：
10.1021/jp077084j
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
K. S. Narayan
中科院分区：
文献类型：
--
作者：
N. Arun;K. S. Narayan
导电聚合物可以作为软电极基板锚定和定向功能膜蛋白。我们利用这种可能性来定向细菌视紫红质（bR），膜蛋白，作为光驱动的质子泵，在这些基板上的功能。下面的聚合物基板变得光电活性的光谱和时间特性对应于相邻的bR分子层。我们证明了被动和主动的生物分子信号转导模型导电聚合物的概念。导电聚合物层中的光致电流调制可以用近端bR层内的电荷位移或跨界面的电荷转移过程来解释。我们探讨的影响，这种强耦合的bR和导电聚合物层中的电过程之间的物理过程。
Conducting polymers can serve as soft electrode substrates for anchoring and orientating functional membrane proteins. We utilize this possibility to orient bacteriorhodopsin (bR), a membrane protein that functions as a light-driven proton pump, on these substrates. The underlying polymer substrate becomes optoelectronically active with the spectral and temporal characteristics corresponding to that of the adjacent bR molecular layer. We demonstrate the concept of passive and active biomolecular signal transduction using model conducting polymers. The photoinduced current modulation in the conducting polymer layer can be explained in terms of the charge displacements within the proximal bR layer or charge-transfer processes across the interface. We explore the implications of this strong coupling between the photophysical processes in bR and electrical processes in the conducting polymer layer.