Transferência de energia entre corantes catiônicos em sistemas homogêneos
| Autor: | Oliveira Hueder Paulo Moisés de, Machulek Junior Amilcar, Legendre Alexandre de Oliveira, Gehlen Marcelo Henrique |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 26, Iss 4, Pp 564-569 (2003) |
| Druh dokumentu: | article |
| ISSN: | 0100-4042 1678-7064 |
| Popis: | In this work, the energy transfer by dipole-dipole interaction between cationic dyes in n-alcohols (methanol, ethanol, 1-propanol and 1-butanol) is studied by time resolved and steady state fluorescence measurements. The critical radii of energy transfer were determined by three independent methods; the spectral overlap, fluorescence decay profiles, and relative intensity measurements. In all solvents, R0 values of the dye pairs obtained from spectral overlap were between 40 to 90 Å. Steady state and time resolved fluorescence measurements resulted in values of R0 in the range of 50 - 80 Å, with good correlation of values. |
| Databáze: | Directory of Open Access Journals |
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