Azo dyes are among the most common synthetic dyes with wide use across the industry. Some of them also exhibit tautomerism, the ability to transform between azo and hydrazo forms, changing their properties in the process. The team of scientists led by Martin Dračínský from IOCB Prague was interested in the way to find out which form such dyes crystallize in.
The researchers employed advanced solid-state NMR techniques, as well as X-ray diffraction and quantum-chemical computations and developed a methodology that allows fast and reliable determination of the tautomeric state of solid azo dyes.
Read the paper:
- Bártová, K.; Císařová, I.; Lyčka, A.; Dračínský, M. Tautomerism of azo dyes in the solid state studied by 15N, 14N, 13C and 1H NMR spectroscopy, X-ray diffraction and quantum-chemical calculations. Dyes and Pigments 2020, 178, 108342. https://doi.org/10.1016/j.dyepig.2020.108342
Read next...
