Composite polyaniline/calixarene Langmuir-Blodgett films for gas sensing

N. V. Lavrik, D. De Rossi, Z. I. Kazantseva, A. V. Nabok, B. A. Nesterenko, S. A. Piletsky, V. I. Kalchenko, A. N. Shivaniuk, L. N. Markovskiy

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Mixtures of the polyaniline (emeraldine base) and phosphorylated calix[4]resorcinolarene derivative (CA) are proposed to prepare LB films for conductometric gas sensors. They are quite stable at the air-water interface and give LB films of high quality. The average thickness of the mixed monolayers is found to be 1.6 nm. The as-deposited films are insulating. Doping with HCI increases the conductivity up to between 0.6 × 10-3 and 0.5 S cm-1 which depends on the component ratio. The films containing more than 20 wt% of CA are doped reversibly in part. Thus, the films which are highly sensitive to either NH3 or HCI films are prepared by choosing the component ratio. Detection of NH3 and HCl in the ppm range is demonstrated.

Original languageEnglish
Pages (from-to)315-319
Number of pages5
JournalNanotechnology
Volume7
Issue number4
DOIs
StatePublished - Dec 1996
Externally publishedYes

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