Discrimination of alcohol molecules using hydrogen-bridged cholesteric polymer networks

Chin Kai Chang, Cees W.M. Bastiaansen, Dirk J. Broer, Hui Lung Kuo

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


This paper presents a novel hydrogen-bridged cholesteric liquid crystal (CLC) polymer networks with a porosity. This kind of material is adopted to distinguish methanol from ethanol. Because of the diversity of molecular affinities in ethanol and methanol with the hydrogen-bridged cholesteric polymer networks, the reflected colors of the cholesteric polymer networks are obviously different upon the uptake of the alcohol solutions with different ratios of methanol/ethanol. Furthermore, the composition of the monomers was altered to obtain the different sensitivities of the different alcohol concentrations and ratios of methanol/ethanol. The reduction of cross-link density and increasing amount of alkyloxybenzoic acid in polymer networks can enhance the distinguishing ability between methanol and ethanol. The function of change in transmission-valley wavelength of CLC versus the alcohol concentration and the ratio of methanol/ethanol was also obtained from the experimental results.

Original languageEnglish
Pages (from-to)4550-4555
Number of pages6
Issue number11
Publication statusPublished - 2012 Jun 12

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry


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