1. Department of Physical Science, Faculty of Applied Sciences , Tunku Abdul Rahman University of Management and Technology , 50932 Setapak , Kuala Lumpur , Malaysia
2. Department of Chemistry, Faculty of Science , Universiti Putra Malaysia , 43400 UPM Serdang , Selangor Darul Ehsan , Malaysia
3. Research Centre for Crystalline Materials, School of Medical and Life Sciences , Sunway University , 47500 Bandar Sunway , Selangor Darul Ehsan , Malaysia