Open Access Nano Express

The chemical exfoliation phenomena in layered GaSe-polyaniline composite

Olena Igorivna Aksimentyeva1, Pavlo Yuriyovich Demchenko1, Volodymyr Pavlovich Savchyn2 and Olexiy Alexandrovich Balitskii2*

Author affiliations

1 Department of Chemistry, Lviv Ivan Franko National University, Kyryla and Mefodiya Str, 6, Lviv, 79005, Ukraine

2 Department of Electronics, Lviv Ivan Franko National University, Dragomanov Str. 50, Lviv, 79005, Ukraine

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Citation and License

Nanoscale Research Letters 2013, 8:29  doi:10.1186/1556-276X-8-29

Published: 15 January 2013

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.

Keywords:
Chemical exfoliation; Gallium selenide; Layered compound