1. Department of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai 201620 P.R. China
2. Department of Chemistry University of Okara Okara 56300 Pakistan
3. Research Center for Advanced Materials King Khalid University P.O. Box 9004 Abha 61514 Saudi Arabia
4. Department of Chemistry Faculty of Science King Khalid University P.O. Box 9004 Abha 61413 Saudi Arabia
5. Department of Chemistry University of Sargodha Sargodha 40100 Pakistan
6. Research University of Sialkot Sialkot 51040 Pakistan
7. School of Health and Life Sciences Teesside University Middlesbrough TS1 3BA UK
8. National Horizons Centre Teesside University Darlington DL1 1HG UK