Open AccessThermodynamic properties of novel phenylene-bridged periodic mesoporous organosilica as high performance liquid chromatographic stationary phase
Author(s) -
Liping Wu,
Dong Lian,
Qinghe Zhang,
Hongmei Li
Publication year - 2010
Publication title -
sepu/chinese journal of chromatography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.171
H-Index - 19
eISSN - 1872-2059
pISSN - 1000-8713
DOI - 10.3724/sp.j.1123.2010.00693
Subject(s) - phenylene , pmos logic , enthalpy , mesoporous organosilica , phase (matter) , mesoporous material , chemistry , stationary phase , high performance liquid chromatography , chemical engineering , materials science , chromatography , thermodynamics , organic chemistry , mesoporous silica , polymer , transistor , catalysis , physics , quantum mechanics , voltage , engineering
The thermodynamic properties of spherical phenylene-bridged periodic mesoporous organosilica (PMOs) as high performance liquid chromatographic stationary phase were investigated and compared with commercial grafted C18 and phenyl stationary phases. The retention behavior of several compounds of polycyclic aromatic hydrocarbons (PAHs) was investigated. The thermodynamic parameters of transfer from mobile phase to stationary phase were discussed. The results showed that the enthalpy-entropy compensation effect does not exist for homemade phenylene-bridged PMOs. The retention mechanism of solutes on the prepared stationary phase involves synergistic interaction of hydrophobic, pi-pi and inclusion interactions, which is different with that on the commercial stationary phases.