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http://cio.repositorioinstitucional.mx/jspui/handle/1002/461| Synthesis, Characterization and Photophysical Properties of Pyridine-Carbazole Acrylonitrile Derivatives | |
| ENRIQUE PEREZ GUTIERREZ MARIA JUDITH PERCINO ZACARIAS MARGARITA CERON RIVERA JOSE LUIS MALDONADO RIVERA GABRIEL RAMOS ORTIZ | |
| GABRIEL RAMOS ORTIZ | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| We synthesized three novel highly fluorescent compounds, 2-(2’-pyridyl)-3-(Nethyl-( 3’-carbazolyl))acrylonitrile, 2-(3”-pyridyl)-3-(N-ethyl-(3’-carbazolyl))acrylonitrile, and 2-(4-pyridyl)-3-(N-ethyl-(3’-carbazolyl))acrylonitrile by Knoevenagel condensation. The first two were synthesized without solvent in the presence of piperidine as a catalyst; the third was synthesized without a catalyst and with N,N-dimethylformamide as a solvent. In solution, the molar absorption coefficients showed absorptions at 380, 378, and 396 nm, respectively; in solid state, absorptions were at 398, 390, and 442 nm, respectively. The fluorescence emission was at 540, 540 and 604 nm, respectively, the 2-(4-pyridyl)-3-(Nethyl-( 3’-carbazolyl))acrylonitrile showed a red shift in the emission of 64 nm compared to the other two compounds. The fluorescence quantum yield for the compounds in powder form showed values of 0.05, 0.14, and 0.006, respectively; compared with the value measured for the Alq3 | |
| 11-03-2011 | |
| Artículo | |
| CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA | |
| Aparece en las colecciones: | Articulos Arbitrados 2011 |
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