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NO2 sensitivity of gadolinium bis-phthalocyanine assemblies prepared by ultra-fast LB deposition
- Source :
- 198 (2002): 791–796., info:cnr-pdr/source/autori:Dooling C.M., Richardson T.H., Valli L., Rella R., Jiang J./titolo:NO2 sensitivity of gadolinium bis-phthalocyanine assemblies prepared by ultra-fast LB deposition/doi:/rivista:/anno:2002/pagina_da:791/pagina_a:796/intervallo_pagine:791–796/volume:198
- Publication Year :
- 2002
- Publisher :
- Elsevier BV, 2002.
-
Abstract
- The sensitivity of gadolinium bis-phthalocyanine assemblies to different concentrations of NO2 has been studied. Gold (on chrome) interdigitated electrodes on glass were passed through a floating Langmuir monolayer at 1000 mm min−1 for 20 excursions. This ultra-fast technique has greatly reduced the time needed to manufacture samples and has led to a defect structure in the deposited layers with an enhanced surface area to volume ratio. The resulting films were tested as chemiresistors in low concentrations of NO2 (0.25–4 ppm). A highly linear calibration plot (fractional current vs. concentration plot) was obtained over the concentration range 0.25–1.0 ppm, with a gradient of ∼210% ppm−1.
Details
- ISSN :
- 09277757
- Database :
- OpenAIRE
- Journal :
- Colloids and Surfaces A: Physicochemical and Engineering Aspects
- Accession number :
- edsair.doi.dedup.....00b28084680770a4f07e258e5ab9f91b
- Full Text :
- https://doi.org/10.1016/s0927-7757(01)01001-9