Electron transport through a (terpyridine)ruthenium metallo-surfactant containing a redox-active aminocatechol derivative

Electron transport through a (terpyridine)ruthenium metallo-surfactant containing a redox-active aminocatechol derivative
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通过含有氧化还原活性氨基儿茶酚衍生物的(三联吡啶)钌金属表面活性剂进行电子传输

DOI:
10.1039/d2dt00938b
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发表时间:
2022
影响因子:
4
通讯作者:
Verani, Cláudio N.
Verani, Cláudio N.
中科院分区:
化学2区
文献类型:
--
作者:
Amunugama, Samudra;Asempa, Eyram;Tripathi, Ramesh Chandra;Wanniarachchi, Dakshika;Baydoun, Habib;Hoffmann, Peter;Jakubikova, Elena;Verani, Cláudio N.

文献摘要

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为了开发一类具有单向电子转移性能的新型金属表面活性剂,合成了一种含半醌衍生物L2的三联吡啶钌配合物[RuIII(Lterpy)(L2)Cl] PF 6(1),并对其固体和溶液结构进行了表征.通过实验以及DFT方法研究了1的电子和氧化还原行为,表明金属和配体之间存在显着的轨道混合和重叠。该配合物在空气-水界面形成稳定的Pockels-Langmuir膜,并允许在金电极上形成薄膜以制备纳米级Au| LB 1|用于电流-电压(I/V)分析的Au结。复合物1显示出不对称的电子转移与最大整流比为32的基础上通过MO的氨基儿茶酚衍生物的隧道效应。
Aiming to develop a new class of metallosurfactants with unidirectional electron transfer properties, a (terpyridine) ruthenium complex containing a semiquinone derivative L2, namely [RuIII(Lterpy)(L2)Cl]PF6 (1), was synthesized and structurally characterized as a solid and in solution. The electronic and redox behaviour of 1 was studied experimentally as well as by means of DFT methods, and is indicative of significant orbital mixing and overlap between metal and ligands. The complex forms stable Pockels–Langmuir films at the air-water interface and allows for the formation of thin films onto gold electrodes to prepare nanoscale Au|LB 1|Au junctions for current–voltage (I/V) analysis. Complex 1 shows asymmetric electron transfer with a maximum rectification ratio of 32 based on tunnelling through MOs of the aminocatechol derivative.