Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (03): 291-297. Previous Articles     Next Articles

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  1. (长沙理工大学化学与生物工程学院 电力与交通材料保护湖南省重点实验室 长沙 410004)
  • 收稿日期:2010-08-18 修回日期:2010-10-04 出版日期:2011-02-14 发布日期:2010-10-19
  • 通讯作者: 曹忠
  • 基金资助:


Mechanism and Sensing Application for Recognition of Methanol Based on Calixarene Supramolecules

DAI Yun-Lin, CAO Zhong, ZENG Ju-Lan, GONG Fu-Chun, HU Jing-Ling, HE Ting-Ting   

  1. (Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004)
  • Received:2010-08-18 Revised:2010-10-04 Online:2011-02-14 Published:2010-10-19
  • Contact: Zhong CAO

Four calixarene supramolecular compounds were employed as adsorptive coating materials of quartz crystal microbalance (QCM) for detection of methanol gas in environmental atmosphere, indicating that resorcinol cyclic tetramer (RCT) was the most effectively active material to methanol. The single crystal of RCT-MeOH was prepared and subject to X-ray diffraction analysis, showing that the recognition mechanism was based on the formation of C—H…π bond interaction between the methyl group of the methanol molecule and the phenyl ring of the calixarene. When the coating mass of RCT was 28.16 μg, the coated QCM sensor possessed the highest sensitivity, that was 0.01245 Hz/ppm. The initial speeds of the adsorption and desorption processes for methanol gas on RCT were obtained as -0.2110 Hz/s and 0.09497 Hz/s, respectively. With rapid test time, good reproducibility and stability, the RCT coated QCM sensor could be used for the detection of methanol samples with a recovery of 97.83%~103.66%, which agreed well with those obtained by gas chromatography, showing its potential application on the determination of methanol gas in atmospheric environment.

Key words: calixarene, methanol, quartz crystal microbalance, single crystal s structure, C—H…π interaction

CLC Number: