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.
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.
Mifune
Masaki
M
Faculty of Pharmaceutical Sciences, Okayama University, Tsushima-Naka, Okayama 700-8530, Japan.
Minato
Kenjiro
K
Kitamura
Yuji
Y
Okazaki
Kimiya
K
Iwado
Akimasa
A
Akizawa
Hiromichi
H
Haginaka
Jun
J
Motohashi
Noriko
N
Saito
Yutaka
Y