**Mamduh J. Aljaafreh, Saradh Prasad, Mohamad S. AlSalhi, Raya H. Alhandel and Reem A. Alsaigh**

TD-DFT Simulation and Experimental Studies of a Mirrorless Lasing of Poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-diphenylene-vinylene-2-methoxy-5-{2-ethylhexyloxy}-benzene)] Reprinted from: *Polymers* **2021**, *13*, 1430, doi:10.3390/polym13091430 ................ **163**
