Please login first
x Selected file doesn't exist!
N-Alkyl-N-[5-(propylamino)-9H-benzo[a]phenoxazin-9-ylidene]alkan-1- aminium chlorides: synthesis and photophysical studies
* 1 , 2 , 1
1  Centro de Química, Universidade do Minho, Gualtar, 4710-057 Braga, Portugal
2  Centro de Física, Universidade do Minho, Gualtar, 4710-057 Braga, Portugal

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

 
 
Top