Excitation of the ligand-to-metal charge transfer band induces electron tunnelling in azurin
Excitation of the ligand-to-metal charge transfer band induces electron tunnelling in azurin
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DOI：
10.1063/1.4867884
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发表时间：
2014-03-03
影响因子：
4
通讯作者：
Cannistraro, Salvatore
中科院分区：
文献类型：
--
作者：
Baldacchini, Chiara;Bizzarri, Anna Rita;Cannistraro, Salvatore
固定在铟锡氧化物上的天青蓝铜蛋白质的光激发与其配体-金属电荷转移吸收带共振，导致蛋白质环境内的光诱导电流隧穿。相关的电子传递速率估计约为10（5）s（-1）。提出了一个基于天青激发态的共振隧穿模型。通过光脉冲控制电子转移过程的能力为天青蛋白在生物纳米光电器件中的应用开辟了有趣的前景。(C)2014 AIP Publishing LLC.
Optical excitation of azurin blue copper protein immobilized on indium-tin oxide, in resonance with its ligand-to-metal charge transfer absorption band, resulted in a light-induced current tunnelling within the protein milieu. The related electron transport rate is estimated to be about 10(5) s(-1). A model based on resonant tunnelling through an azurin excited molecular state is proposed. The capability of controlling electron transfer processes through light pulses opens interesting perspectives for implementation of azurin in bio-nano-opto-electronic devices. (C) 2014 AIP Publishing LLC.