Temperature is often not considered as a precision stimulus for artificial chemical systems in contrast to the host–guest interactions related to many natural processes. Similarly, mimicking multi‐state volatile memory operations using a single molecular system with temperature as a precision stimulus is highly laborious. Here we demonstrate how a mixture of iron(II) chloride and bipyridine can be used as a reversible color‐to‐colorless thermochromic switch and logic operators. The generality of the approach was illustrated using Co^II and Ni^II salts that resulted in color‐to‐color transitions. DMSO gels of these systems, exhibited reversible opaque‐transparency switching. More importantly, optically readable multi‐state volatile memory with temperature as a precision input has been demonstrated. The stored data is volatile and is lost instantaneously upon withdrawal or change of temperature. Simultaneous read‐out at multiple wavelengths results in single‐input/multi‐output sequential logic operations such as data accumulators (counters) leading to volatile memory states. The present system provides access to thermoresponsive materials wherein temperature can be used as a precision stimulus.

中文翻译：

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通过金属有机配合物和杂化凝胶将热致变色颜色切换到温度控制的易失性记忆并进行反操作。

与许多自然过程有关的宿主-客体相互作用相比，温度通常不被认为是人工化学系统的精确刺激。同样，使用温度作为精确刺激的单分子系统模拟多状态易失性存储操作也非常费力。在这里，我们演示了氯化铁（II）和联吡啶的混合物如何用作可逆的有色至无色热致变色开关和逻辑运算符。使用Co ^II和Ni ^II说明了该方法的一般性导致颜色向颜色过渡的盐。这些系统的DMSO凝胶表现出可逆的不透明透明性切换。更重要的是，已经证明了以温度作为精确输入的光学可读多态易失性存储器。所存储的数据是易失的，并且在撤回或温度变化时会立即丢失。在多个波长下同时读取会导致单输入/多输出顺序逻辑运算，例如数据累加器（计数器）会导致易失性存储器状态。本系统提供了对热响应材料的访问，其中温度可以用作精确的刺激。