Study of the Possibility of Functionalization of Graphene Oxide Nanoplatelets with Photochromic Chromene and Spiropyrans in Solutions

Spectral and kinetic studies of the interaction of the surface groups of graphene oxide nanoplatelets with the molecules of photochromic compounds from the classes of chromenes and spiropyrans in solutions were carried out. It was shown that the interaction of the surface hydroxy groups of graphene oxide with the spiropyran molecules led to the formation of protonated complexes exhibiting negative photochromism. In the case of chromene, spectrally less pronounced interactions were detected, presumably due to physical adsorption of the molecules on the surface of the graphene oxide nanoplatelets.