1. Fujian Provincial Key Laboratory of Polymer Materials, Fujian Normal University, 3 Shangsan Road, Cangshang Region, Fuzhou 350007, China
2. NIST Center for Neutron Research, Gaithersburg, Maryland 20899-6102, United States
3. Department
of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
4. Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
5. Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
6. Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 22254, Saudi Arabia