Publication Date
2010
Document Type
Article
Publication Title
Helvetica Chimica Acta
Volume
93
Issue
6
First and Last Page
1162-1171
Abstract
A palladium(II) acetate‐catalyzed synthesis of 1 that utilizes the novel triazene 1‐{4‐[(E)‐morpholin‐4‐yldiazenyl]phenyl}ethanone as a synthon is described. The room temperature absorption spectra of 1 in various solvents exhibited a π→π* transition in the range of 330–350 nm. Compound 1 was observed to be luminescent, with room‐temperature solution and solid‐state emission spectra that exhibited maxima in the range 400–500 nm. All room‐temperature absorption and emission spectra exhibited some degree of vibrational structure. The emission spectrum of 1 at 77 K in propanenitrile glass was broad and featureless with a maximum at 447 nm. Compound 1 crystallized as a yellow and colorless polymorph. X‐Ray structure analyses of both of these polymorphs and 1‐{4‐[(E)‐morpholin‐4‐yldiazenyl]phenyl}ethanone are presented.
Recommended Citation
Pye, C., Fronczek, F., & Isovitsch, R. (2010). The synthesis, photophysical characterization, and x‐ray structure analysis of two polymorphs of 4,4′‐diacetylstilbene. Helvetica Chimica Acta, 93(6), 1162-1171. doi:10.1002/hlca.200900343