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Usage Statistics Cite this paper as: Naik, S.; Coutinho, P.; Gonçalves, M. N-Alkyl-N-[5-(propylamino)-9H-benzo[a]phenoxazin-9-ylidene]alkan-1- aminium chlorides: synthesis and photophysical studies. In Proceedings of the 13th Int. Electron. Conf. Synth. Org. Chem., 1-30 November 2009; Sciforum Electronic Conferences Series, 2009, a024:1-6.
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13th Int. Electron. Conf. Synth. Org. Chem. 2009, a024:1-6
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N-Alkyl-N-[5-(propylamino)-9H-benzo[a]phenoxazin-9-ylidene]alkan-1- aminium chlorides: synthesis and photophysical studies
1 Centro de Química, Universidade do Minho, Gualtar, 4710-057 Braga, Portugal;
2 Centro de Física, Universidade do Minho, Gualtar, 4710-057 Braga, Portugal;
* Author to whom correspondence should be addressed.
(This article belongs to the section A. General Organic Synthesis)
Abstract: Fluorescent benzo[a]phenoxazinium chlorides with dipropyl-, dioctyl- didecyl- and didodecyl-chains as the amino substituents of the 9-positions of the tetracyclic system were synthesised in moderate to good yields. All the compounds absorbed in the wavelength range of 638-641 nm and emitted at 673 or 676 nm with quantum yields of 0.17-0.19 in ethanol.
Keywords: Benzo[a]phenoxazinium dyes; Near-infrared fluorescence probes; Cationic dyes; Nile Blue derivatives
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