| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5392044 | Chemical Physics Letters | 2006 | 5 Pages |
Abstract
The acyl derivative of auramine with dodecyl carbon chain has solvent dependent absorption and emission spectra. The Lippert-Mataga plot shows two trends, a small slope in alcohols and a significant one in polar aprotic solvents. The change of dipole moment between ground and excited-state in aprotic solvent is 12Â D, indicating an intramolecular charge-transfer process. Decay components of 5 and 600Â ps appear in aprotic polar solvents. In protic polar solvents, the fast component, ranging from 9Â ps in ethanol up to 53Â ps in n-octanol, is correlated with the Debye dielectric relaxation time of the n-alcohols.
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Authors
Robson Valentim Pereira, Marcelo Henrique Gehlen,