AP de Silva’s learning and teaching experiences occurred at the University of Colombo, Sri Lanka and at Queen’s University of Belfast, Northern Ireland. With his co-workers, he introduced molecular logic as an experimental field and established the generality of the luminescent PET (photoinduced electron transfer) sensor/switch principle. He also contributed to the chemistry module of the market-leading point-of-care blood gas/electrolyte analyzer, which has sales of over 150 M USD for human use (OPTITM) and 400 M USD for veterinary use (VetstatTM). He wrote the book ‘Molecular Logic-based Computation’, which is also available in Chinese and in Japanese.”