SOLVENT EFFECTS ON THE ELECTRONIC STRUCTURE AND NON-LINEAR OPTICAL PROPERTIES OF PYRENE AND SOME OF ITS DERIVATIVES BASED ON DENSITY FUNCTIONAL THEORY. FJS [Internet]. 2021 Jun. 13 [cited 2025 Sep. 11];4(4):236-51. Available from: http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/477