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A. P. de Silva received his early education in chemistry at the University of Colombo, Sri Lanka. This was followed by Ph.D. and postdoctoral research in organic photochemistry at the Queen’s University of Belfast, UK. After spending six years lecturing in chemistry at Colombo, he returned to Belfast where he has been lecturer, reader, and professor. With his co-workers, he has had the chance to publish the first experimental molecular logic gates in the primary literature and to establish the generality of one of the main principles underlying luminescent sensors. He also contributed to the chemistry module of the market-leading OPTI point-of-care blood gas/electrolyte analyzer; the sales of the chemistry module are worth $AU 54 million ($US 40 million, € 34 million) so far.