Enforcement of national and international laws banning illegal tropical timber trade hinges on independent origin verification, such as with genetic or chemical wood properties. This is of particular concern in Central Africa, where illegal trade prevails. However, tracing methods have not yet consistently …

A series of new, easily synthesized C60-fullerene derivatives is introduced that allow for optimization of the interactions between rr-P3HT and the fullerene by systematic variation of the size of the ester group. Two compounds gave overall cell efficiencies of 4.8%, clearly outperforming [60]PCBM which …

Michael additions of α-nitroesters with enones and α,β-unsaturated aldehydes result in quantitative conversions to the corresponding 1,4-adducts by performing the reactions in water in the presence of ytterbium triflate as water-tolerant Lewis acid.