1. Department of Chemistry, Faculty of Science, University, Teknologi Malaysia (UTM), 81310 Skudai, Johor, Malaysia.
2. School of Chemistry and Environment Studies, Faculty of Applied Sciences, University Teknologi MARA (UiTM) Sarawak Jalan Meranek, 94300 Kota Samarahan, Sarawak, Malaysia.
3. Department of Bioscience and Health Sciences, Faculty of Biosciences and Medical Engineering, University Teknologi Malaysia (UTM), 81310 Skudai, Johor, Malaysia.