We hereby present a simple method for reducing the effect of oxygen quenching in Triplet-Triplet Annihilation Upconversion (TTA-UC) systems. A number of commercially available thioethers and one thiol have been tested as singlet oxygen scavengers. Recording of the upconverted emission from a well-studied PdOEP (sensitizer)-DPA (annihilator/emitter) couple has been made over time with steady-sta...

Abstract High levels of crop species diversity are considered beneficial. However, increasing might be difficult because environmental constraints and the reliance on a few major crops for most food supply. Here we introduce theoretical framework hierarchical diversity, in which requirements limit potential demand agricultural products further constrain attainable diversity. We estimated global...