1. Division of Chemistry School of Science Walailak University Nakhon Si Thammarat 80160 Thailand
2. School of Chemistry and Molecular Bioscience University of Wollongong Wollongong NSW 2522 Australia
3. Division of Physics School of Science Walailak University Nakhon Si Thammarat 80160 Thailand
4. Nanoengineered Soft Materials for Green Environment Laboratory National Nanotechnology Center National Science and Technology Development Agency Thailand Science Park Pathum Thani 12120 Thailand