1. National
Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
2. Department
of Mathematics, Statistics and Computer Science, Kasetsart University, Kamphaeng Saen
Campus, Nakhon Pathom 73140, Thailand
3. Department
of Chemistry, Faculty of Science, Chiang Mai University, 239 Huay
Kaew Road, Muang District, Chiang Mai 50200, Thailand