PyridiniumN-Phenoxide Betaines and Their
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Eberhardt, Runar ;Löbbecke, Stefan ;Neidhart, Bernd ;Reichardt, Christian
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Article
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1997
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John Wiley and Sons
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English
⚖ 524 KB
## Abstract By means of the negative solvatochromic betaine dyes 1a, b, the UV/Vis‐spectroscopically derived empirical solvent polarity parameter __E__~T~(30) for supercritical carbon dioxide (sc‐CO~2~) was determined in the temperature and pressure ranges 40–80°C and 150–550 bar, respectively.