Graphene is a 2D material with remarkable properties.

M-polynomial of chemical compounds is a recent idea and it produces closed forms of many degree-based topological indices which correlate chemical properties of material under investigation. These indices are used in the development of quantitative structure-activity relationships (QSARs) in which the biological activity and other properties of molecules like boiling point, stability, strain energy etc. are correlated with their structures. In this paper, we determine general closed formulae for M-polynomials of the Sierpinski graph. We recover important topological degree-based indices. We also give different graphs of topological indices and their relations with the parameters of structures.

Topological indices are real numbers associated with molecular graphs and catch symmetry of molecular structures that give it a scientific dialect to foresee properties. In this work, we compute first and second reverse Zagreb indices, first and second reverse hyper Zagreb indices, reverse Atomic-bond connectivity index and reverse Geometric-arithmetic index for TUC₄[m, n].