1. State Key Laboratory of Environment-Friendly Energy Materials School of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621010 P. R. China
2. College of Chemistry, Chemical Engineering and Materials Science Shandong Normal University Jinan 250014 P. R. China
3. State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116024 P. R. China
4. Department of Chemistry and Biochemistry Utah State University College of Chemistry Logan Utah 84318 USA