Cocrystals and Salts of 4,4′-Dinitro-2,2′,6,6′-tetracarboxybiphenyl with N-Heterocycles: Solid State Photodimerization of Criss-Cross Aligned Olefins and Photophysical Properties

The compound 4,4′-dinitro-2,2′,6,6′-tetracarboxybiphenyl (H4A) was shown to produce cocrystals and salts with various N-heterocycles such as 4,4′-bipyridylethylene, 4,4′-bipyridine, 4,4′-bipyridyle...