Electrochemical Switching of Photoelectrochemical Processes at CdS QDs and Photosystem I-Modified Electrodes
Electrochemical Switching of Photoelectrochemical Processes at CdS QDs and Photosystem I-Modified Electrodes
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DOI：
10.1021/nn3037286
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发表时间：
2012-10-01
期刊：
影响因子：
17.1
通讯作者：
Willner, Itamar
中科院分区：
文献类型：
--
作者：
Efrati, Ariel;Yehezkeli, Omer;Willner, Itamar
将光敏无机CdS量子点（QD）或天然光系统I（PSI）固定到连接到Au电极的吡咯喹啉醌（PQQ）单层上以产生混合继电器/QD（或光系统）组装体。通过电极电势的电化学偏压，继电器单元保持在其氧化的PQQ或还原的PQQH（2）状态。继电器单元的氧化或还原状态决定了光电流的方向（阳极或阴极）。通过在值E >=-0.05 V和E之间的电极电势的循环偏置，
Photoactive inorganic CdS quantum dots (QDs) or the native photosystem I (PSI) is immobilized onto a pyrroloquinoline quinone (PQQ) monolayer linked to Au electrodes to yield hybrid relay/QDs (or photosystem) assemblies. By the electrochemical biasing of the electrode potential, the relay units are retained in their oxidized PQQ or reduced PQQH(2) states. The oxidized or reduced states of the relay units dictate the direction of the photocurrent (anodic or cathodic). By the cyclic biasing of the electrode potential between the values E >= - 0.05 V and E