Spectroscopy and photophysics of 4- and 7-hydroxycoumarins and their thione analogs
Acid-base equilibria were studied for 4-hydroxycoumarin, 7-hydroxy-4-methylcoumarin and their thione derivatives in different media for their ground and lowest energy singlet and triplet excited states. The ethoxylated and/or methoxylated derivatives were also investigated. Characterization involves...
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| Format: | article |
| Language: | eng |
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2001
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| Online Access: | http://hdl.handle.net/10316/5212 |
| Country: | Portugal |
| Oai: | oai:estudogeral.sib.uc.pt:10316/5212 |