Electrochemically-Switched 2nd Order Non-Linear Optical Response in an Arylimido-Polyoxometalate with High Contrast and Cyclability
Electrochemically-Switched 2nd Order Non-Linear Optical Response in an Arylimido-Polyoxometalate with High Contrast and Cyclability
复制标题
具有高对比度和可循环性的芳基酰亚胺多金属氧酸盐中的电化学切换二阶非线性光学响应
DOI：
10.1002/ange.202215537
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发表时间：
2022
影响因子：
--
通讯作者：
Hood B
中科院分区：
文献类型：
--
作者：
Hood B
首次在多金属氧酸盐(POMS)中发现了电化学开关二阶非线性光学响应，芳亚胺基衍生物表现出高开关对比度(94 %)、高可见透明度和可循环性的领先组合。光谱电化学和TD-DFT研究表明，这种关断是由于还原状态下电子跃迁的电荷转移(CT)特性减弱所致。这是对亚胺-POM还原状态的首次研究，并展示了POM杂化作为电化学激活的分子开关的潜力。
Electrochemically switched 2ndorder non‐linear optical responses have been demonstrated for the first time in polyoxometalates (POMs), with an arylimido‐derivative showing a leading combination of high on/off contrast (94 %), high visible transparency, and cyclability. Spectro‐electrochemical and TD‐DFT studies indicate that the switch‐off results from weakened charge transfer (CT) character of the electronic transitions in the reduced state. This represents the first study of an imido‐POM reduced state, and demonstrates the potential of POM hybrids as electrochemically activated molecular switches.