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Pyridinium N ‐Phenoxide Betaines and Their Application to the Characterization of Solvent Polarities, XXIII . Determination of E T (30) Values of Supercritical Carbon Dioxide at Various Pressures and Temperatures
Author(s) -
Eberhardt Runar,
Löbbecke Stefan,
Neidhart Bernd,
Reichardt Christian
Publication year - 1997
Publication title -
liebigs annalen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 0947-3440
DOI - 10.1002/jlac.199719970622
Subject(s) - solvatochromism , chemistry , betaine , pyridinium , supercritical carbon dioxide , supercritical fluid , solvent , carbon dioxide , bar (unit) , solvent polarity , polarity (international relations) , organic chemistry , inorganic chemistry , photochemistry , biochemistry , physics , meteorology , cell
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.