1. Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
2. Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
3. Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
4. National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
5. Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
6. Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan