1. Chemical Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Gadong, Brunei Darussalam
2. Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Gadong, Brunei Darussalam
3. Department of Chemistry, Faculty of Science, University of Peradeniya, Peradeniya, Sri Lanka
4. Postgraduate Institute of Science, University of Peradeniya, Peradeniya, Sri Lanka