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Keywords:

  • nanostructures;
  • polymerization;
  • quartz crystal microbalances;
  • sensors;
  • volatile organic compounds

Abstract

We report the construction of a molecular recognition layer composed of polyelectrolyte brushes and metal complexes on the surface of a quartz crystal microbalance (QCM) and the sensing abilities for various volatile organic compounds (VOCs). Atom-transfer radical polymerization of 2-(dimethylamino)ethyl acrylate from an initiator-terminated self-assembled monolayer yielded polyelectrolyte brushes on the surface of a weight-detectable quartz crystal microbalance. One end of a poly[(2-dimethylamino)ethyl methacrylate] brush was covalently attached onto the surface of a sensor. We found that metallophthalocyanines with four bulky pentaphenylbenzene substituents could adsorb volatile organic compounds selectively into their cavities. Macromolecular metal complexes were prepared by immersing polymer-brush-modified QCMs into an aqueous solution of sterically protected cobalt phthalocyanine. Anionic cobalt phthalocyanine was trapped in the polymer brushes and acted as a molecular receptor for the sensing of VOC molecules.

Featured Compounds

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  1. 1 - 5
Compound 1
Molecular Weight:2397.7593
Molecular Formula:C176H112CoN8
InChIKey:JLLDDVNGUWOHQZ-UHFFFAOYSA-N
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Compound 2
Molecular Weight:2397.5195
Molecular Formula:C176H112N8Ni
InChIKey:QJAMRFVDUXVPSM-UHFFFAOYSA-N
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Compound 3
Molecular Weight:2402.372
Molecular Formula:C176H112CuN8
InChIKey:BEXQFOZNYFTGSG-UHFFFAOYSA-N
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Compound 4
Molecular Weight:2404.235
Molecular Formula:C176H112N8Zn
InChIKey:LTYWRLOZCGAHAQ-UHFFFAOYSA-N
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Compound 5
Molecular Weight:Not Available
Molecular Formula:Not Available
InChIKey:Not Available
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