1. Department of Chemical EngineeringNational Taiwan University Taipei Taiwan 10617
2. Institute of Polymer Science and Engineering, National Taiwan University Taipei Taiwan 10617
3. Department of Organic Materials Science, Graduate School of Organic Materials ScienceYamagata University 4‐3‐16, Jonan, Yonezawa, Yamagata 992‐8510 Japan
4. Advanced Research Center of Green Materials Science and TechnologyNational Taiwan University Taipei Taiwan 10617