Electroswitchable optical device enabling both luminescence and coloration control consisted of fluoran dye and 1,4-benzoquinone
Electroswitchable optical device enabling both luminescence and coloration control consisted of fluoran dye and 1,4-benzoquinone
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DOI：
10.1016/j.solmat.2015.06.061
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发表时间：
2016-02
影响因子：
6.9
通讯作者：
K. Kanazawa;Kazuki Nakamura;Norihisa Kobayashi
中科院分区：
文献类型：
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作者：
K. Kanazawa;Kazuki Nakamura;Norihisa Kobayashi
通过将氟分子(黄-1)和1，4-苯二酚(BQ)的发光/电致变色(EC)分子结合在一起，得到了一种能够同时调制发射和着色的电开关器件。在黄-1中，通过可逆的电化学诱导内酯环的闭合和打开，实现了发光和着色的电开关。中性黄-1是无色的，没有任何荧光，而氧化黄-1(内酯开环形式)是黄色的，由于它的延伸、平面和共轭体系而显示绿色荧光。为了获得快速响应时间和高可逆性的电致发光和着色调制光学器件，引入了BQ分子作为双功能材料。在辅助电极上加入氧化还原活性部分，维持了电荷平衡，并作为EC分子(中性/还原状态下分别为透明/黄色)；BQ作为双功能分子，导致发射和着色的快速稳定切换。
An electroswitching device that enables modulation of both emission and coloration was obtained by combining luminesncent/electrochromic (EC) molecules of afluoran molecule(Yellow-1) and1,4-benzoquinone(BQ). Electroswitching of emission and coloration was achieved by the reversible electrochemically induced closing and opening of the lactone ring inYellow-1. Neutral Yellow-1was colorless and did not exhibit any fluorescence, whileoxidized Yellow-1 (lactone ring-opened form)was yellow and displayed green fluorescence because of its extended, planar, and conjugated system. In order to achieve quick response time and high reversibility of the electroswitching optical device for modulating both emission and coloration, aBQmolecule was introduced as a bifunctional material. The inclusion of a redox-active moiety on the auxiliary electrode maintained the charge balance and acted as an EC molecule (transparent/yellow in neutral/reduced state, respectively).BQacted as a bifunctional molecule, leading to quick and stable switching of both emission and coloration.