Comparative Study of the Optoelectronic, Reactivity Descriptors, and Thermodynamic Properties for Derivatives of Fluorene, and its Hetero-Analogous (Si, NH, O, S, and Se) by Employing the DFT and TD-DFT Approaches. Mal. J. Fund. Appl. Sci. [Internet]. 2024 Aug. 27 [cited 2026 Sep. 14];20(4):871-87. Available from: https://mjfas.utm.my/index.php/mjfas/article/view/3538