Photoresponsive Dithienylethene-Containing Tris(8-hydroxyquinolinato)aluminum(III) Complexes with Photocontrollable Electron-Transporting Properties for Solution-Processable Optical and Organic Resistive Memory Devices,Journal of the American Chemical Society

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Photoresponsive Dithienylethene-Containing Tris(8-hydroxyquinolinato)aluminum(III) Complexes with Photocontrollable Electron-Transporting Properties for Solution-Processable Optical and Organic Resistive Memory Devices
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-07-02 , DOI: 10.1021/jacs.0c03057
Cheok-Lam Wong ₁ , Maggie Ng ₁ , Eugene Yau-Hin Hong ₁ , Yi-Chun Wong ₁ , Mei-Yee Chan ₁ , Vivian Wing-Wah Yam ₁

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The rational design of a new class of photoresponsive tris(8-hydroxyquinolinato)aluminum(III) (Alq3) complexes has been developed. By incorporating the photochromic dithienylethene units with different peripheral heterocycles into the Alq3 framework, the photochromic properties as well as photoswitching efficiency can be readily modulated, through effective photocyclization of the Al(III) complex. Such intrinsic photochromic behavior leads to the unprecedented enhancement in the electron-transporting properties as demonstrated by the as-fabricated electron-only device, rendering the realization of photoswitchable electron mobility. In addition, one of these complexes is capable of serving as an active layer for solution-processable resistive memory devices. Photocontrollable memory performance has been achieved with a binary memory behavior, with high ON/OFF ratio and long retention time. This work represents not only the first example of photoresponsive Alq3-based electron-transporting materials but also the solution-processable Alq3-based optical and resistive memory devices with photocontrollable performance.

中文翻译：

光响应性含二噻吩乙烯的三（8-羟基喹啉）铝（III）配合物具有光控电子传输特性，用于可溶液加工的光学和有机电阻存储器件

已开发出一类新型光响应性三（8-羟基喹啉）铝（III）（Alq3）配合物的合理设计。通过将具有不同外围杂环的光致变色二噻吩基乙烯单元结合到 Alq3 骨架中，可以通过 Al(III) 配合物的有效光环化轻松调节光致变色性能和光开关效率。这种固有的光致变色行为导致电子传输性能前所未有的增强，正如制造的纯电子器件所证明的那样，实现了光可切换电子迁移率。此外，这些复合物中的一种能够用作可溶液加工电阻存储器件的有源层。已通过二进制内存行为实现了光控内存性能，具有高开/关比和长保留时间。这项工作不仅代表了光响应 Alq3 基电子传输材料的第一个例子，而且代表了具有光控性能的可溶液加工的 Alq3 基光学和电阻存储器件。

更新日期：2020-07-02

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