Engineering Crystals for Excited State Diffraction Studies: Structure and Spectroscopic Properties of Two Polymorphic Modifications of the 4,4*-dihydroxybenzophenone/ 4,13-diaza-18-crown-6 Complex
نویسندگان
چکیده
The crystal structures of two modifications of 4,49-dihydroxybenzophenone with 4,13-diaza-18-crown-6 have been analyzed in terms of their suitability for time-resolved diffraction studies of transient excited species in crystals. The room-temperature lifetimes of the triplet excited state of the dihydroxybenzophenone molecule in the two modifications have been determined as 44.2 6 1.2 ms and 49.2 6 0.5 ms in the monoclinic and triclinic forms, respectively. © 1999 Elsevier Science Ltd
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