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将有机场效应晶体管用于传感和开关实际应用的主要阻碍之一是其破坏性传感机制产生的一系列问题.这里我们报道了一种智能的系统,用光致变色分子螺吡喃(SP)和聚甲基丙烯酸甲酯(PMMA)结合作为栅介电材料,得到的器件能以一种无损的方式,通过光可逆调控器件的导电性能.当螺吡喃分子发生可逆的光学异构时,器件的电容和导电性随之发生显著而可逆的变化.这种构象诱导电感耦合的作用机理提供了一种制备功能器件的新方法,可以推广为利用其它刺激响应型分子来制备特定功能器件的普适性方法.
One of the main obstacles to the practical use of organic field-effect transistors for sensing and switching is the series of problems that their destructive sensing mechanism creates, and here we report an intelligent system using photochromic molecular spiropyrans ( SP) and polymethylmethacrylate (PMMA) as a gate dielectric material, the obtained device can pass the photoreductive regulation of the conductivity of the device in a nondestructive manner. When the spiropyran molecule undergoes reversible optical isomerism , A significant and reversible change ensues in the capacitance and conductivity of the device.The mechanism of action of this conformation-induced inductive coupling provides a new way of making functional devices that can be generalized to the use of other stimuli-responsive molecules for the preparation of specific functions The universal method of the device.