화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.327, 57-60, 1999
Color change due to phase transition in N-(2,4-dinitrophenyl)-o-anisidine
N-(2,4-dinitrophenyl)-o-anisidine changes its color from orange to red with change in crystal structures. The orange phase transforms irreversibly into red phase by heating In the present study, we observed the transformation process by atomic force microscopy to make clear the microscopic transition mechanism. The observed images revealed that the red phase is resulted by sublimation of molecules from orange crystal by changing its conformation to the red one and re-adherence to the orange surface with epitaxial relation.