1. Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
2. Institut für Organische Chemie Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
3. Materials and Textiles Technology, Faculty of Science and Technology, Thammasat University, Klong Luang, Pathum Thani 12120, Thailand