Dipartimento di Chimica, Università di Perugia, 06123 Perugia, Italy.
Phys Chem Chem Phys. 2011 Dec 7;13(45):20335-44. doi: 10.1039/c1cp21782h. Epub 2011 Oct 13.
1,3-Dihydro-1,3,3-trimethyl-8'-nitro-spiro[2H-indole-2,3'-[3H]naphth[2,1-b][1,4]oxazine] (SpO) is a photochromic, acidichromic and metallochromic compound. Its chromogenic properties are characterized in acetonitrile, at room temperature. They are exploited to process both boolean and Fuzzy logic. By using HClO(4), AlCl(3) and Cu(ClO(4))(2) as chemical inputs, UV radiation as power supply, and the absorbance at specific wavelengths in the visible as optical output, SpO results in a five-states molecular switch whereby some complex boolean logic circuits are implemented. If the chemical inputs are varied in an analog manner, the solution of SpO assumes an infinite number of colours. Therefore, by choosing the RGB colour coordinates as optical outputs, the fundamental operators of the "infinite-valued" Fuzzy logic are implemented. Particularly, two Fuzzy logic systems are built upon a new defuzzification procedure imitating the way humans perceive colours.
1,3-二氢-1,3,3-三甲基-8'-硝基螺[2H-吲哚-2,3'-[3H]萘[2,1-b][1,4]恶嗪]（SpO）是一种光致变色、酸致变色和金属变色化合物。其显色性质在乙腈中于室温下进行表征。这些性质被用于处理布尔逻辑和模糊逻辑。通过使用 HClO(4)、AlCl(3)和 Cu(ClO(4))(2) 作为化学输入、UV 辐射作为电源，以及在可见光谱中特定波长的吸光度作为光学输出，SpO 实现了一个五态分子开关，其中实现了一些复杂的布尔逻辑电路。如果以模拟方式改变化学输入，则 SpO 的溶液将呈现出无数种颜色。因此，通过选择 RGB 颜色坐标作为光学输出，可以实现“多值”模糊逻辑的基本操作。特别地，两个模糊逻辑系统是基于一种新的模糊逻辑解模糊过程构建的，该过程模仿了人类感知颜色的方式。
