Photochromism refers to the phenomenon that when A compound (A) is irradiated by a certain wavelength of light, it can undergo a specific chemical reaction to obtain a product (B), which results in a significant change in its absorption harmonic due to a change in structure. Under the… Read More »Definition and System of Photochromism
Cohen et al. systematically studied the absorption spectra of salicylaldehyde aniline compounds, and found that some crystals of these compounds were photochromic and some were thermochromic. According to the spectral properties and crystal structure, they divided the crystals of these compounds into two categories.There are many differences between… Read More »relationship between crystal structure and photochromism and thermochromism