Affiliation: | 1. Department of Chemistry and Research Institute for Biomedical and Advanced Materials, Shantou University, Guangdong 515063 (P. R. China);2. Department of Chemistry, University of Malaya, 50603 Kuala Lumpur (Malaysia);3. Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203 Jeddah (Saudi Arabia) |