INVESTIGATION ON SOME TOPOLOGICAL INDICES OF CARBON NANOBUD THROUGH M-POLYNOMIAL

Topological indices are popular descriptors used in chemical graph theory. These are basically numerical values that correlate the topology of chemical compounds to its different physical properties and synthetic reactivities. Among different classes of topological indices, degree based topological indices have prominent role in characterising the topology of molecular graph and are widely used in quantitative structure property relationship (QSPR) and quantitative structure activity relationship (QSAR) studies. Carbon Nanobud exhibits superior properties compared to both Nanotubes and Fullerene. Structure of Carbon nanobud is achieved by fusion of fullerene and Nanotubes with carbon-carbon covalent bond connections between them. Some of the popular degree based topological indices of a typical Nanobud molecular structure is estimated in this article. Here we considered a single fullerene (C60), attached on the surface of a zigzag Single Walled Carbon Nanotube (SWNT) by a [2 x 2] cyclo-addition.