Optical–structural correlation in a novel quinoxaline-based anion sensor
- 4 June 2001
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 7,p. 1079-1083
- https://doi.org/10.1039/b102023o
Abstract
Protonation of 2,3-dipyridin-2-ylquinoxaline 1 results in a significant change in the conformation of the molecule as revealed by 1H NMR and optical spectroscopies and by single crystal X-ray diffraction studies performed upon the product, 2-(3-pyridin-2-ylquinoxalin-2-yl)pyridinium hexafluorophosphate, 2. A further consequence of protonation is that the electronic properties of 2 are altered in such a way as to produce a luminescent compound, the luminescence of which is quenched by a variety of biologically and commercially relevant anions.Keywords
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