ORGN 568 |
| Highly fluorescent and stable carbazole based donor-acceptor compounds 1,2-dicyano-trans-1,2-bis-4(carbazolyl)phenylethylene (1) and 1,2-dicyano-trans-1,2-bis-4(3,6-di-t-butylcarbazolyl)phenylethylene (2) are synthesized and characterized. They show negative solvatochromic absorption behavior, but show both positive and negative solvatochromic behavior in the fluorescence spectra. They also show very high solid state quantum yields of emission (0.72 and 0.88). In water/THF mixture, 1 as well as 2 aggregate into 50-150 nm nanoparticles and the emission quantum yield of 1 and 2 nanoparticles is much higher than that of 1 and 2 in solution.
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Materials, Devices and Switches, Metal-Mediated Reactions, Asymmetric Reactions, Total Synthesis, Biologically-Related Molecules and Processes
7:00 PM-9:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- La Louisiane, Blrm. C, Poster
Division of Organic Chemistry |
