Fluorescent azophenol-quinazoline dyad as multichannel reversible pH indicator in aqueous media: an innovative concept on diazo based dyads |
| |
| Authors: | Amit Kumar Rampal PandeyRakesh Kumar Gupta Daya Shankar Pandey |
| |
| Institution: | Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221 005, India |
| |
| Abstract: | 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. |
| |
| Keywords: | New concept Critical pH point Azophenol-quinazoline dyad Reversible pH indicator Multichannel signalling |
| 本文献已被 ScienceDirect 等数据库收录！ |
