Solid-State Thermochromism Studied by Variable-Temperature Diffuse Reflectance Spectroscopy. A New Perspective on the Chromism of Salicylideneanilines

摘要: This paper reports a successful application of variable-temperature diffuse reflectance spectroscopy for the study solid-state thermo- and photochromism salicylideneanilines, which belong to class most well-known chromic organic compounds. disproves fundamental aspects that have been widely accepted as long 40 years provides new perspective on chromism. The enol form salicylideneaniline, has wrongly regarded pale yellow, is in fact colorless, yellow due trace cis-keto form, equilibrium with form. phototransformation from trans-keto was observed first time. Although it given modification salicylideneanilines either photochromic or thermochromic but not both, this reveals such an exclusive property chromism does exist are generally solid state, whether they ...