| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5271730 | Tetrahedron Letters | 2013 | 4 Pages |
A novel azophenol-quinazoline dyad 1 has been designed, synthesized and demonstrated as an efficient reversible multichannel pH indicator through distinct signalling in aqueous media. Owing to the competence between highly fluorescent quinazoline moiety and a well known fluorescence quencher diazo group, dyad 1 is moderately fluorescent in nature. Under acidic conditions 1 displays diverse fluorogenic changes (blue emission at pH 4.25; green at pH 1.80) while under basic condition (pH 11.80) chromogenic changes were observed.
Graphical abstractA novel azophenol-quinazoline dyad 1 has been designed, and employed as an efficient reversible multichannel pH indicator through distinct signalling in aqueous media. Owing to the competence between highly fluorescent quinazoline moiety and a well known fluorescence quencher diazo group, dyad 1 is moderately fluorescent. Under acidic conditions 1 displays diverse fluorogenic changes (blue emission at pH 4.25; green emission at pH 1.80) while under basic conditions (pH 11.80) chromogenic changes were observed.Download full-size image
