Together with colleagues from several European research institutions and universities led by the University of Cambridge we have published an article in Nature Chemistry in which we study the properties of organic molecules that can host optically active excitons with different spin states (spin 0 und spin 1). These singlet and triplet states have different excitation energies and provide the possibility to optically manipulate and read out spin states. The results are promising for using organic diradicals for future applications in the field of quantum information processing and optoelectronics.