Department of Chemical Science Faculty of Science Engineering & Technology Universiti Tunku Abdul Rahman Jln Universiti Bandar Barat 31900 Kampar Perak Malaysia;
Department of Science Faculty of Engineering & Science Universiti Tunku Abdul Rahman Jln Genting Klang Setapak 53300 Kuala Lumpur Malaysia;
Chemistry Department Faculty of Science Universiti Malaya 50603 Kuala Lumpur Malaysia;