1. Department of Materials Science, National University of Tainan, Tainan 70005, Taiwan, ROC
2. School of Chemical Engineering, Northwest University, Xi’an, Shaanxi 710069, China
3. Department of Chemistry and Biochemistry, California State University, Chico, California 95929, United States
4. Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States