0000000001115212
AUTHOR
E. Sugiono
Bis(pyridylvinyl)diaminobenzenes: synthesis, acidochromism and solvatochromism of the fluorescence
Abstract C2-symmetrical 1,4-distyrylbenzenes with 4-dimethylaminobenzene or pyridine as terminal rings, and propyloxy or dipropylamino groups in the central 2,5-positions were prepared. Solvatochromism of the absorption is small, but more pronounced in the fluorescence spectra. Some compounds exhibit huge Stokes shifts. Acid strongly alters the fluorescence: red shifts and decreasing quantum yields is the general result, but depending on the position and character of the basic sites, a strong recovery of fluorescence efficiency combined with large hypsochromic shifts may result in highly acidic solutions.
CCDC 149204: Experimental Crystal Structure Determination
Related Article: H.Detert, D.Schollmeyer, E.Sugiono|2001|Eur.J.Org.Chem.|2001|2927|doi:10.1002/1099-0690(200108)2001:153.0.CO;2-V
CCDC 149205: Experimental Crystal Structure Determination
Related Article: H.Detert, D.Schollmeyer, E.Sugiono|2001|Eur.J.Org.Chem.|2001|2927|doi:10.1002/1099-0690(200108)2001:153.0.CO;2-V