In the search to obtain new and more efficient components of memory devices, we report the photochromic, dielectric and electrochemical response of a light-responsive organic compound, and its memory performance under electrical fields. The so-called N(1)-[12-(4-(4′-isobutyloxyphenyldiazo)phenoxy)dodecyloxy)]thymine, tAZOi, molecule contains one azobenzene group, which provides with photochromic character, and one terminal thymine group, capable to form hydrogen bonds and assemble supramolecular dimers, (tAZOi)₂. We have calculated the optical absorption coefficient, extinction coefficient and refractive index of tAZOi, which obeys the single oscillator Wemple–DiDomenico model. An ITO/tAZOi/Al device has been prepared and presents two switchable conductance states with preservation of memory performance. The mechanism linked to the resistive random-access memory (RRAM) has been evaluated by molecular modelling and is controlled by p-type conduction, possibly involving hydrogen-bonding. Upon UV irradiation at $\sim$ 365 nm, tAZOi displays an increase in the complex permittivity driven by trans-to-cis (E-to-Z) isomerisation of the azobenzene groups. Molecular simulations suggest that conductivity and device performance can be enhanced (and controlled) by light exposure through the formation of activated Z isomers that could transfer charge to other neighbouring molecules, resulting in photo-electric responsive devices.

为了获得新的和更有效的存储设备组件，我们报告了光响应有机化合物的光致变色，介电和电化学响应，以及其在电场下的存储性能。所谓的N（1）-[12-（4-（4'-异丁氧基苯基重氮）苯氧基）十二烷氧基）]胸腺嘧啶tAZOi分子包含一个具有光致变色特性的偶氮苯基和一个末端胸腺嘧啶基形成氢键并组装超分子二聚体（tAZOi）₂。我们已经计算出了tAZOi的光吸收系数，消光系数和折射率，这符合单振荡器Wemple–DiDomenico模型。已经准备了ITO / tAZOi / Al器件，该器件具有两种可切换的电导状态，并能保持存储性能。与电阻式随机存取存储器（RRAM）链接的机制已通过分子建模进行了评估，并受p型传导（可能涉及氢键）控制。在紫外线照射下$〜$365纳米，tAZOi显示在复介电常数由驱动的增加的反式-到-顺式（Ë -到- Ž偶氮苯基团）异构化。分子模拟表明，通过形成活化的Z异构体，可以将电荷转移到其他相邻分子上，从而形成光电响应器件，通过曝光可以增强（和控制）导电性和器件性能。