TY - JOUR
T1 - Solvatochromic Investigation of Polarizable Polymeric Liquids
AU - Brady, James E.
AU - Bjorkman, Dale
AU - Herter, Christian D.
AU - Carr, Peter W.
PY - 1984/2
Y1 - 1984/2
N2 - The polarity characteristics of methyl/phenyl OV type GLC stationary phases (OV-101, -3, -7, -11, -17, -22, -25) and low molecular weight analogues (hexamethyldlslloxane, octamethyltrislloxane, decamethyltetraslloxane, and bls(trlmethylsilyl)methane) are examined via the solvatochromic comparison method. As expected, the differential polarity of the OV liquids Is due In large measure to differential polarizability effects and Is well correlated with a reaction field based model. In addition, a nearly constant low level of hydrogen bonding acceptor strength Is observed. The presence of measurable hydrogen bonding acceptance In these liquids has Important implications to the Interpretation of retention of strong hydrogen bond donors on these stationary phases In GLC. Likewise, the Interaction of strong hydrogen bonding solutes with the slloxane backbone of silica gel In liquid chromatography may be a significant, and generally neglected, effect. It appears the detailed analysis of the origin of retention of strong hydrogen bond donors on these materials may warrant reexamination.
AB - The polarity characteristics of methyl/phenyl OV type GLC stationary phases (OV-101, -3, -7, -11, -17, -22, -25) and low molecular weight analogues (hexamethyldlslloxane, octamethyltrislloxane, decamethyltetraslloxane, and bls(trlmethylsilyl)methane) are examined via the solvatochromic comparison method. As expected, the differential polarity of the OV liquids Is due In large measure to differential polarizability effects and Is well correlated with a reaction field based model. In addition, a nearly constant low level of hydrogen bonding acceptor strength Is observed. The presence of measurable hydrogen bonding acceptance In these liquids has Important implications to the Interpretation of retention of strong hydrogen bond donors on these stationary phases In GLC. Likewise, the Interaction of strong hydrogen bonding solutes with the slloxane backbone of silica gel In liquid chromatography may be a significant, and generally neglected, effect. It appears the detailed analysis of the origin of retention of strong hydrogen bond donors on these materials may warrant reexamination.
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U2 - 10.1021/ac00266a036
DO - 10.1021/ac00266a036
M3 - Article
AN - SCOPUS:0021371127
SN - 0003-2700
VL - 56
SP - 278
EP - 283
JO - Analytical Chemistry
JF - Analytical Chemistry
IS - 2
ER -