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Synthesis and photophysical properties of N ‐styrylazinones
Author(s) -
Cho SuDong,
Hwang Jaeyoung,
Kim HoKyun,
Yim HeungSup,
Kim JeumJong,
Lee SangGyeong,
Yoon YongJin
Publication year - 2007
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570440435
Subject(s) - chemistry , maxima , azine , fluorescence , absorption (acoustics) , benzaldehyde , analytical chemistry (journal) , absorption spectroscopy , photochemistry , organic chemistry , optics , catalysis , art , physics , performance art , art history
AbstractN ‐Styrylazinones and 1‐styrylbenzotriazine were synthesized, and their photophysical properties were investigated. ( Z )‐ and/or ( E )‐ N ‐Styrylazinones (or azine) 4 were prepared from the corresponding heterocycles 1 and benzaldehyde ( 3 ) by four methods. The absorption maxima of ( Z )‐ and/or ( E )‐ 4a ‐ 4j were measured in four solvents. Their absorption maxima showed a moderate dependence upon solvents. The absorption maxima of ( Z )‐isomers were blue‐shifted as compared the corresponding ( E )‐isomers. Emission maxima, fluorescence band half‐widths, 0,0 transition energies, Stokes shifts, and quantum yields of ( Z )‐ and/or ( E )‐ 4a, 4b, 4d, 4e and 4j were measured in organic solvents. The fluorescence spectra show moderate solvatochroism. The fluorescence properties of N ‐styrylheterocycles vary with every heterocycles.