1. Laboratory for Computational and Applied Chemistry, Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand, Center of Nanotechnology, Kasetsart University Research and Development Institute, Kasetsart University, Bangkok 10900, Thailand, NANOTEC Center of Nanotechnology, National Nanotechnology Center, Kasetsart University, Bangkok 10900, Thailand, and Institute of Ion Physics and Applied Physics, University of Innsbruck, A-6020 Innsbruck, Austria