Moreover, during the amorphous-to-crystal transformation, the crystalline structures can be tuned. For example, Jianjun Wang et al. adopted a freeze assembly strategy to manipulate the molecular assembly process of 1,1,2,2tetra(4-methoxyphenyl) ethene (TMOE) through the regulation of the evolution of solvent crystal grain recrystallization (Figure ). V). This violet-emitting crystal 1-V exhibited a remarkably high photoluminescence quantum yield of 30.6%.