1. Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
2. Department of Materials Science and Engineering, University of California, Irvine, Irvine, California 92697, United States
3. Institute of Materials Science and Engineering, National Central University, Taoyuan 320, Taiwan
4. Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan
5. Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, Hsinchu 310, Taiwan
6. Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697, United States
7. Irvine Materials Research Institute (IMRI), University of California, Irvine, Irvine, California 92697, United States