Recent Development of Fullerenol Research pp. 341-380
Authors: T. H. Goswami, Rachana Singh, Electronics & Smart Materials Division, Defence Materials & Stores Research & Development Establishment, DMSRDE, Kanpur, India
Abstract: Ever since the discovery and large scale production of fullerene (C60), an intensive research is on to explore and utilize the exotic properties of this aesthetic material. The early problems concerning the material tractability associated with the pristine fullerene were thoroughly addressed and efforts have been focused on the molecular engineering of structures in order to produce materials possessing enhanced electrical and optical properties. Derivatization of fullerene (atom / group /organic moiety) not only amicably solves the tractability problem but also enhances its scope to exploit these materials for wide variety of novel applications. Among the functionalized derivatives, fullerenol [C60(OH)x], the polyhydroxy fullerene , has been extensively studied owing to its high solubility in large variety of solvents (depending on the number of hydroxyl groups the solubility varies from organic to aqueous), good stability (in ambient condition) and extremely high reactivity. Pure (unreacted) fullerenols have been explored for the development of buffer layers for fullerene / conducting polymer solar cells, as an actuator to study piezoelectric effect on doped polyurethane elastomers and free-radical scavenger against reactive oxygen species (ROS) and OH-. radicals as well as nitric oxides. Fullerenols have also been studied as proton conductors in fuel-cells and the size controllable supramolecular self-assembly of nanospheres and nanocomposites.