Optical-switched proton logic gate:Indocyanine green decorated HSB-W5 MOFs nanosheets

光控质子逻辑门:吲哚菁绿修饰的HSB-W5纳米片薄膜

Proton conduction controlled by light is important for advanced applications in sensors and information processing devices.We herein report a metal-organic framework(MOF)thin film by introducing indocyanine green dye into HSB-W5(HSB=hydrogenated Schiff base)matrix(ICG@HSB-W5)to construct a series of basic logic gates(NOT,NAND,and NOR)on account of its good photothermal conversion ability and photo-controlled proton conductivity.The proton conductivity of ICG@HSB-W5 thin film is 25 times higher than that of the pristine HSB-W5 thin film and responses efficiently to lasers.In addition,the change of proton conductivity is very large with an ON/OFF ratio above1000 and enough to be distinguished to build logic gates.In this logic gate system,808-and 405-nm lasers are used as inputs and the proton conductivity is used as output signal with different thresholds.The electrical output signal is convenient and available to be received and detected.It offers a new route for the design of molecular logic gates based on MOF and facilitates the construction of proton-based logic gate or more complicated logic devices.

光控质子传导在先进传感器和信息处理设备中有重要的应用前景.本文通过将吲哚菁绿(ICG)引入HSB-W5基体中,制备出一种利用光热转换实现光控质子传导性能的金属有机骨架(MOFs)薄膜(ICG@HSB-W5),并以此为基础构建了NOT、NAND和NOR逻辑门.ICG@HSB-W5薄膜的质子电导率是HSB-W5薄膜的25倍;而且该薄膜的质子电导率对激光具有高效快速的响应,开关比超过1000,可以形成不同的电导状态来构建逻辑门.在这个逻辑门系统中,808-和405-nm的激光作为输入信号,质子电导率作为输出信号.质子电导率作为一种电信号可根据实际需求调节阈值,也能方便地被接收和检测.本文为MOF基分子逻辑门的设计提供了一种新的途径并有助于质子逻辑门甚至更复杂的逻辑器件的发展.