Current topics in photosynthesis: Dedicated to Professor L.N.M. Duysens on the occasion of his retirement

Four decades ago, when Lou Duysens was about to start his work on fluo­ rescence and energy transfer in photosynthesis that would lead to his thesis [1], very little was known about the molecular mechanisms of photosyn­ thesis, certainly from our present-day point of view. However, this state of affairs would rapidly change in the ensuing years by the introduction of modern physical and biochemical techniques. Especially the field of optical spectroscopy, on which the work of Duysens had su...