Department of Mathematics, Vels Institute of Science, Technology & Advanced Studies (VISTAS), Chennai 600117, Tamil Nadu, India

Abstract: Octa Graphene is a nanosheet made up of octagons and squares forming periodic unit cells. Owing to its exceptional physical and chemical properties, Octa Graphene has gained considerable interest in the fields of nano electronics and nano drug delivery. This study evaluates the topological characteristics of Octa Grayphyne and Octa Graphdine nanosheets using bond additive topological indices based on the degree concept. Some topological indices have been calculated in order to quantitatively study the structural behavior and molecular properties of the mentioned nanostructures. The findings offer valuable information regarding the stability, electronic, and vibrational properties of these nano materials. In addition, these nanostructures have shown great potential for use in nano-battery technology, drug delivery in cells, and advanced nano devices.

Keywords: Adriatic indices, Molecular graph, Octa-Grayphyne, Octa-Graphdine, Topological indices.

VOLUME 10 ISSUE 04 2026: 133 – 150