State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, China.
ACS Nano. 2011 Jun 28;5(6):5249-53. doi: 10.1021/nn201455a. Epub 2011 May 24.
In this study, we fabricated a novel hybrid film system, in which reversible electroswitching quantum dot (QD) luminescence was realized in aqueous solution for the first time. On the basis of an electrochromic material, poly(methylene blue) (PMB), QD luminescence could be switched effectively in a narrow potential range of -0.4 to 0 V via the corresponding luminescence quenching effect. The luminescence switching operation was reversible and reproducible, and no noticeable changes in both "on" and "off" luminescence intensities were observed in 20 cycles. This simple system not only effectively overcame the harsh operation environment that generally existed in previous reports but also provided an easy method for the design and fabrication of other novel QD electroswitchable hybrid components.
在这项研究中，我们制造了一种新型混合膜系统，首次在水溶液中实现了可逆电致变色量子点（QD）发光。基于电致变色材料聚亚甲蓝（PMB），通过相应的发光猝灭效应，QD 发光可以在-0.4 到 0 V 的窄电位范围内有效切换。发光开关操作是可逆和可重复的，在 20 个循环中，“开”和“关”发光强度都没有明显变化。这个简单的系统不仅有效地克服了以前报道中普遍存在的苛刻操作环境，而且为设计和制造其他新型 QD 电致变色混合组件提供了一种简单的方法。
