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Novel DNA fluorescence probes based on N-[5-(11-functionalised-undecylamino)-9H...
Alves, Carla M. A.; Naik, Sarala; Coutinho, Paulo J. G.; Gonçalves, M. Sameiro T.Fluorescent benzo[a]phenoxazinium chlorides possessing undecylamino chains with functionalised ending-groups (hydroxyl, carboxylic acid and the ester group) as substituents at the 5-position of the heterocycles were successfully synthesised and characterised. These compounds were used in photophysical studies with DNA, and compared to the corresponding analogue with a non-functionalised terminal (methyl group)....
N-(Di)icosyl-substituted benzo[a]phenoxazinium chlorides : synthesis and evalua...
Naik, Sarala; Alves, Carla M. A.; Coutinho, Paulo J. G.; Gonçalves, M. Sameiro T.Five benzo[a]phenoxazinium chlorides containing alkyl chains with twenty carbon atoms on 5- or 9-positions of the tetracyclic ring were efficiently synthesised and characterised by UV/Vis/NIR spectroscopy. The absorption and emission maxima in ethanol lie in the range 627-641 nm and 645-676 nm, respectively, with quantum yields varying from 0.14 to 0.38. Preliminary photophysical studies with these fluorochromo...
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