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HPLC separation of fullerenes on two charge-transfer stationary phases

✍ Scribed by Qiong-Wei Yu; Zhi-Guo Shi; Bo Lin; Yan Wu; Yu-Qi Feng

Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 533 KB
Volume: 29
Category: Article
ISSN: 1615-9306
DOI: 10.1002/jssc.200500445

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✦ Synopsis

Abstract

Two charge‐transfer stationary phases were prepared by immobilizing p‐nitrobenzoic acid and naphthyl acetic acid onto silica. The nitrophenyl moiety and the naphthyl moiety were grafted to silica gel through the spacer of aminoalkyl silanes. The HPLC separation of C~60~, C~70~, and higher fullerenes on the new stationary phases was also studied. The influence of mobile phase and column temperature on the separation of C~60~ and C~70~ was examined, respectively. The retentions of C~60~ and C~70~ on the two stationary phases increased with decreasing toluene content in the mobile phase or with increasing column temperature. Higher fullerenes can be separated well using toluene as the mobile phase on the stationary phase of p‐nitrobenzoic acid‐bonded silica.

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