1. State Key Laboratory of Heavy Oil Processing College of New Energy and Materials China University of Petroleum Beijing No. 18 Fuxue Rd. Beijing 102249 P. R. China
2. Department of Chemistry University of California Riverside CA 92521 USA
3. Centre for Translational Atomaterials Swinburne University of Technology Hawthorn VIC 3122 Australia
4. School of Science RMIT University Melbourne VIC 3000 Australia
5. Department of Chemistry and Biochemistry California State University Long Beach CA 90840 USA