1. Department of Chemistry, Faculty of Science, Universiti Putra Malaysia UPM, 43400 Serdang, Selangor, Malaysia
2. Integrated Chemical BioPhysics Research, Faculty of Science, Universiti Putra Malaysia UPM, 43400 Serdang, Selangor, Malaysia
3. Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, Doha 2713, Qatar