[1
]Centre for Advanced Materials and Devices (CAMD), Department of Chemistry, University
of Colombo, Colombo 00300, Sri Lanka
[2
]UCL School of Pharmacy, University College London, 29−39 Brunswick Square, London
WCIN 1AX, U.K.
[3
]Faculty of Technology, Sabaragamuwa University of Sri Lanka, P.O. Box 02, Belihuloya
70140, Sri Lanka