1. Institute of Microscale Optoelectronics, Optical Engineering , Shenzhen University , Shenzhen , 518060 , P.R. China
2. Department of Chemistry , University of Agriculture Faisalabad , Faisalabad 38040 , Pakistan
3. Department of Chemistry, School of Science , University of Management and Technology , Lahore 54770 , Pakistan
4. School of Chemistry and Chemical Engineering , Huaiyin Normal University , Huaiyin , Jiangsu 223300 , China
5. Department of Physics , University of Agriculture Faisalabad , Faisalabad , Pakistan