Artigo Revisado por pares

Chromatographic separation of geometrical isomers using highly oriented polymer-immobilized silica gels

1994; Elsevier BV; Volume: 672; Issue: 1-2 Linguagem: Inglês

10.1016/0021-9673(94)80612-8

ISSN

1873-3778

Autores

Takanori Fukumoto, Hirotaka Ihara, Shigeyoshi Sakaki, Hideto Shosenji, Chuichi Hirayama,

Tópico(s)

Microfluidic and Capillary Electrophoresis Applications

Resumo

Poly(octadecyl acrylate) having a reactive group at one side of the terminal group was synthesized and immobilized on porous silica gels. Differential scanning calorimetric measurement indicated that the immobilized polymer underwent a crystal-to-isotropic phase transition on silica gels. Using a packed column, a remarkably high separation factor for geometrical isomers of stilbene was observed in the crystal-state temperature range, although no similar separation was observed with octadecylated silica gels. It was estimated by calculation of the HOMO that this specific retention includes charge-transfer interactions from double bonds of solutes to acrylate moieties of the stationary phase.

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