Prabhu S Manikanda, Vijayalakshmi A R, Govardhan S, Prabhu S
Department of Mathematics, St. Joseph's College of Engineering, 600119, Chennai, India.
Department of Mathematics, Sri Venkateswara College of Engineering, 602117, Sriperumbudur, India.
Sci Rep. 2025 Jul 1;15(1):20632. doi: 10.1038/s41598-025-06823-y.
Carbon-based nanomaterials, such as graphene and graphene nanoribbons (GNRs), have attracted researchers because of their optoelectronic properties. One of the most intriguing properties of GNRs is their tunable bandgap. Unlike inherently metallic graphene sheets, GNRs can exhibit a bandgap, a crucial property for electronic devices. By controlling the width and edge configuration of GNRs, researchers can precisely tailor their electronic properties to meet specific requirements. Chevron-like graphene nanoribbons (ChGNRs) are a class of nanomaterials with unique properties due to their wavy morphology. The electrical conductivity of ChGNRs makes them potentially useful in devices like organic solar cells and transistors. In this study, we computed the Shannon's information entropy measures of ChGNRs using a variety of degree-based topological descriptors (TDs). The basic graph theoretical approach was utilized to derive the explicit mathematical equations of the TDs for the ChGNRs. The results were compared with cove-edged graphene nanoribbons (cGNRs) to analyze the thermodynamic stability of both ChGNRs and cGNRs and the different trends were pointed out.
碳基纳米材料,如石墨烯和石墨烯纳米带(GNRs),因其光电特性而吸引了研究人员。GNRs最引人注目的特性之一是其可调带隙。与本质上为金属的石墨烯片不同,GNRs可以表现出带隙,这是电子器件的关键特性。通过控制GNRs的宽度和边缘构型,研究人员可以精确调整其电子特性以满足特定要求。人字形石墨烯纳米带(ChGNRs)是一类因其波浪形态而具有独特性质的纳米材料。ChGNRs的导电性使其在有机太阳能电池和晶体管等器件中具有潜在用途。在本研究中,我们使用各种基于度的拓扑描述符(TDs)计算了ChGNRs的香农信息熵度量。利用基本的图论方法推导了ChGNRs的TDs的显式数学方程。将结果与 Cove 边缘石墨烯纳米带(cGNRs)进行比较,以分析ChGNRs和cGNRs的热力学稳定性,并指出了不同的趋势。