Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/31970

TitleUltrasound promoted synthesis of Nile Blue derivatives
Author(s)Raju, B. Rama
Sampaio, Diogo
Silva, Maria Manuela
Coutinho, Paulo J. G.
Gonçalves, M. Sameiro T.
KeywordsUltrasound irradiation
Nile Blue derivatives
Sonochemistry
NIR fluorescent probes
Benzo[a]phenoxazines
Blue derivatives
Nile
Issue dateJan-2014
PublisherElsevier
JournalUltrasonics Sonochemistry
Abstract(s)Ultrasound irradiation was used for the first time towards the synthesis of new Nile Blue related benzo[a]phenoxazinium chlorides possessing isopentylamino, (2-cyclohexylethyl)amino and phenethylamino groups at 5-position of the heterocyclic system. The efficacy of sonochemistry was investigated with some of our earlier reported synthesis of benzo[a]phenoxazinium chlorides. This newer protocol proved competent in terms of reaction times and enhanced yields. Photophysical studies carried out in ethanol, water and simulated physiological conditions, revealed that emission maxima occurred in the range 644-656 nm, with high fluorescent quantum yield. Other attractive feature exhibited by these materials includes good thermal stability. These properties might be useful in the development of fluorescent probes for biotechnology.
TypeArticle
URIhttp://hdl.handle.net/1822/31970
DOI10.1016/j.ultsonch.2013.05.010
ISSN1350-4177
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S1350417713001181
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CDQuim - Artigos (Papers)

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