1. Institute of Chemistry and BioMedical Sciences School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 P. R. China
2. Department of Chemistry and Biochemistry Texas Tech University Lubbock TX 79409-1061 USA
3. Mechanical Engineering, Texas Tech University Lubbock TX 79409 USA
4. Department of Industrial Engineering Texas Tech University Lubbock TX 79409-3061 USA
5. Department of Cell Physiology and Molecular Biophysics School of Medicine Texas Tech University Health Sciences Center Lubbock TX 79430-6551 USA