| Autor: |
Zoon PD; University of Amsterdam, van 't Hoff Institute for Molecular Sciences, Nieuwe Achtergracht 129, 1018 WS, Amsterdam, The Netherlands., Brouwer AM |
| Jazyk: |
angličtina |
| Zdroj: |
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology [Photochem Photobiol Sci] 2009 Mar; Vol. 8 (3), pp. 345-53. Date of Electronic Publication: 2009 Feb 16. |
| DOI: |
10.1039/b818371f |
| Abstrakt: |
The solvatochromic behavior of N-(2,5-di-tert-butylphenyl)-9-pyrrolidinoperylene-3,4-dicarboximide () was investigated by measuring the excitation and emission spectra over a wide range of temperature in 2-methyltetrahydrofuran (MTHF). The temperature induced spectral changes can be compared with the changes caused by changing solvent polarity using different solvents at room temperature. In both cases a strong positive solvatochromism is observed both in absorption/excitation and in emission. The difference between excitation and emission energies decreases with increasing solvent polarity. The behavior of can be rationalized in terms of a change in electronic structure with solvent polarity. Although has the typical molecular structure of a push-pull substituted aromatic system, in which the solvatochromic shift in emission is normally larger than that in absorption, in its solvent-induced electronic structure change it resembles a merocyanine. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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