Fluorosolvatochromism of furanyl- and thiophenyl-substituted acetophenones
| Autor: | Friebe, Nadine, Schreiter, Katja, Kübel, Joachim, Dietzek, Benjamin, Moszner, Norbert, Burtscher, Peter, Oehlke, Alexander, Spange, Stefan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
info:eu-repo/classification/ddc/540
ddc:540 Acetophenon Fluoreszenz UV-VIS-Spektroskopie Solvatochromie Acetophenone Fluoreszenz UV/Vis-Spektroskopie Solvatochromie Fluorosolvatochromie lineare freie Energiebeziehung Kamlet-Taft-Gleichung Acetophenones Fluorescence UV-Vis spectroscopy Solvatochromism Fluorosolvatochromism linear solvation energy Kamlet-Taft equation |
| Zdroj: | New J. Chem., 2015,39, 5171-5179 |
| Druh dokumentu: | Článek |
| ISSN: | 1144-0546 |
| DOI: | 10.1039/C5NJ00256G |
| Popis: | A series of para-substituted acetophenones bearing a furanyl or a thiophenyl moiety show a large Stokes-shift, which is a function of various solvent properties. Photophysical properties such as emission lifetime of the compounds have been determined using time-correlated-single photon counting to secure the intrinsic fluorescence behaviour. The solvent dependent position of the UV/Vis emission band [small nu, Greek, tilde]max,em of the compounds has been measured in 26 various solvents. The influence of the solvent on [small nu, Greek, tilde]max,em is of very complex nature and mathematically analysed by multiple square linear solvation energy (LSE)-correlation analysis using Catalán's four-solvent parameter set. Solvent acidity has a strong influence on the bathochromic shift of 2,5-disubstituted furan derivatives compared to the non-5-substituted furan and thiophene derivatives, which show a contrary behaviour. Therefore, the 5-cyanofuranyl-substituted acetophenone derivative is useful as a probe for measuring environmental properties by fluorescence spectroscopy. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|