Separation Characteristics of Aminopropyl Silica Gels Modified with Copper-Phthalocyanine as High Performance Liquid Chromatography Stationary Phase

Masaki Mifune, Yoshihiro Mori, Midori Onoda, Akimasa Iwado, Noriko Motohashi, Jun Haginaka, Yutaka Saito

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Separation characteristics of aminopropyl silica gels modified with copper-phthalocyanine (Cu-PCS D ) were investigated in comparison with those of a pyrene stationary phase (PYE). By the use of alkylbenzenes as samples, we have found that the π-π electron interaction is dominant in the separation mode of a column packed with Cu-PCS D , while the hydrophobic interaction with alkyl groups participates in the separation mode of a PYE column. The separation factor (α n′+1 ) of a polyaromtitic hydrocarbon (PAH) having n′+1 aromatic rings by a PAH having n′ aromatic rings is larger than that obtained from the PYE column. In particular, when n′ is 3, α n′+1 is more than 6 times that of the PYE column in the maximum value. In addition, the planar recognition ability of the Cu-PCS D column is much better than that of the PYE column. The above results indicate that the separation characteristics of Cu-PCS D are mainly due to the π-π electron interaction based on Cu-PCS bound in parallel to the surface of the aminopropyl silica gel.

Original languageEnglish
Pages (from-to)1127-1131
Number of pages5
JournalAnalytical Sciences
Volume14
Issue number6
DOIs
Publication statusPublished - Jan 1 1998

Keywords

  • Aminopropyl silica gel
  • Copper-phthalocyanine-based phase
  • Modification
  • Polyaromatic hydrocarbon
  • Separation characteristics
  • π-π electron interaction

ASJC Scopus subject areas

  • Analytical Chemistry

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