title: The chemical exfoliation phenomena in layered GaSe-polyaniline composite.
abstract: To elucidate the nature of polyaniline (PANI)-GaSe mutual interaction, we carried out structural studies of nano-GaSe powders encapsulated by PANI, exploiting X-ray diffraction and high resolution transmission electron microscopy (HRTEM). Mechanically and ultrasonically dispersed GaSe crystals were mixed with aniline, which then underwent polymerization. After such treatment, GaSe nanocrystals (as shown by HRTEM) consist of few elementary monolayer sandwiches of hexagonal GaSe structure along the crystallographic axis c with a mean diameter of 9.2 nm. There was a significant expansion of interplanar distances (up to 0.833 nm) for all of the nanocrystals observed compared to 0.796 nm for the single crystals.
authors: Department of Electronics, Lviv Ivan Franko National University, Dragomanov Str, 50, Lviv, 79005, Ukraine. balitskii@electronics.wups.lviv.ua.
authors: Olena Igorivna
authors: OI
authors: Aksimentyeva
authors: Pavlo Yuriyovich
authors: PY
authors: Demchenko
authors: Volodymyr Pavlovich
authors: VP
authors: Savchyn
authors: Olexiy Alexandrovich
authors: OA
authors: Balitskii