title: pi-Electron interaction of PAHs with anion-exchange silica gels modified with anionic metal-porphine and -phthalocyanine derivatives as HPLC stationary phase for preparative column in organic solvents.
abstract: To develop easy-to-prepare stationary phases for HPLC, we investigated anion-exchange silica gels, Nucleosil 5SB (Nuc), modified with metal-porphines and -phthalocyanines (M-P). The modified silica gels (M-P(N)) were evaluated for the availability as a stationary phase of HPLC for the separation of pi-electron-rich polyaromatic hydrocarbons (PAHs) in polar and non-polar eluents. Separation ability of silica gels modified with Cu-phthalocyanine derivative (Cu-PCS(N)) was comparable to that of the silica gels binding Cu-PCS through sulfonamide bonds; however, the latter requires troublesome procedures for the preparation. The PAHs tested interact with Cu-PCS(N) in non-polar organic eluents through their pi-electrons similarly as in the case of the PYE column((R)), in which interaction with PAHs was reported to be only the pi-pi-electron interaction.
authors.affiliation: Faculty of Pharmaceutical Sciences, Okayama University, Tsushima-Naka, Okayama 700-8530, Japan.
authors.forename: Masaki
authors.initials: M
authors.lastname: Mifune
authors.forename: Kenjiro
authors.initials: K
authors.lastname: Minato
authors.forename: Yuji
authors.initials: Y
authors.lastname: Kitamura
authors.forename: Kimiya
authors.initials: K
authors.lastname: Okazaki
authors.forename: Akimasa
authors.initials: A
authors.lastname: Iwado
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Akizawa
authors.forename: Jun
authors.initials: J
authors.lastname: Haginaka
authors.forename: Noriko
authors.initials: N
authors.lastname: Motohashi
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Saito