电致变色
材料科学
电解质
普鲁士蓝
锂(药物)
金属有机骨架
金属锂
电致变色装置
纳米技术
光电子学
电极
电化学
吸附
有机化学
化学
物理化学
内分泌学
医学
作者
Issam Mjejri,Cara M. Doherty,Marta Rubio-Martínez,Glenna L. Drisko,Aline Rougier
标识
DOI:10.1021/acsami.7b13647
摘要
Devices displaying controllably tunable optical properties through an applied voltage are attractive for smart glass, mirrors, and displays. Electrochromic material development aims to decrease power consumption while increasing the variety of attainable colors, their brilliance, and their longevity. We report the first electrochromic device constructed from metal organic frameworks (MOFs). Two MOF films, HKUST-1 and ZnMOF-74, are assembled so that the oxidation of one corresponds to the reduction of the other, allowing the two sides of the device to simultaneously change color. These MOF films exhibit cycling stability unrivaled by other MOFs and a significant optical contrast in a lithium-based electrolyte. HKUST-1 reversibly changed from bright blue to light blue and ZnMOF-74 from yellow to brown. The electrochromic device associates the two MOF films via a PMMA-lithium based electrolyte membrane. The color-switching of these MOFs does not arise from an organic-linker redox reaction, signaling unexplored possibilities for electrochromic MOF-based materials.
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