Chemistry Department;
Faculty of Science;
Hadhramout University of Science & Technology;
P.O.Box 50512;
Mukalla;
Republic of Yemen;
Chemistry Department;
Faculty of Science;
King Abdul Aziz University;
Jeddah 21413;
P.O.Box 80203;
Saudi Arabia;
Fulgides; Photochromism; Polymer film; Photobleaching; Photoreaction kinetics; Fatigue resistant;