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Synthesis and photophysical characterisation of long alkyl side-chain derivatives of benzo[a]phenoxazinium salts
Published: 07 November 2008 by MDPI in The 12th International Electronic Conference on Synthetic Organic Chemistry session General Organic Synthesis
Abstract: Several fluorescent benzo[a]phenoxazinium chlorides possessing a long hydrocarbon chain terminated with methyl, hydroxyl, carboxylic acid or ester groups as substituent at the 5-amino function of the heterocycle were efficiently synthesised. Studies of their photophysical properties revealed that all compounds absorbed and emitted at longer wavelengths with moderate to good fluorescent quantum yields.
Keywords: Benzo[a]phenoxazines; Fluorescent labels; Functionalised fluorophores; Longwavelength fluorophores