1. Samsenwittayalai School, 132/11 Rama VI Road, Phaya Thai, Bangkok 10400, Thailand
2. National Yang Ming Chiao Tung University, Taipei City 112304, Taiwan
3. Mahidol University International College, Mahidol University, Nakhon Pathom 73170, Thailand
4. School of Chemistry, UNSW Sydney, Kensington, NSW 2052, Australia