Abstract
The NO2 gas-sensing characteristics of chemiresistors in the form of multilayered Langmuir−Blodgett films of a symmetrically substituted phthalocyanine, containing on the periphery four amidic groups −CONH−, have been studied. Floating layers were spread onto the water surface from a chloroform solution and were transferred onto both hydrophilic and hydrophobic quartz substrates using the vertical lifting method. Response and recovery times have been measured for different working temperatures at a fixed NO2 concentration. Dynamic response characteristics of the electrical conductance of the LB films to different NO2 concentrations, carried out in dry air, have shown a high sensitivity to concentrations of nitrogen dioxide smaller than 20 ppm at room temperature. All measurements have been carried out using coplanar configurations of the devices.
Keywords
Copper phthalocyaninePhthalocyanineCopperSensitivity (control systems)Analytical Chemistry (journal)ChemistryMaterials scienceInorganic chemistryNanotechnologyOptoelectronicsOrganic chemistryEngineering
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Publication Info
- Year
- 1999
- Type
- article
- Volume
- 15
- Issue
- 5
- Pages
- 1748-1753
- Citations
- 85
- Access
- Closed
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Cite This
S. Capone,
S. Mongelli,
R. Rella
et al.
(1999).
Gas Sensitivity Measurements on NO<sub>2</sub>Sensors Based on Copper(II) Tetrakis(<i>n</i>-butylaminocarbonyl)phthalocyanine LB Films.
Langmuir
, 15
(5)
, 1748-1753.
https://doi.org/10.1021/la980608+
Identifiers
- DOI
- 10.1021/la980608+