Polyaniline transmittance spectrum analysis to detection and selectivity of different alcohols and acetic acid

Polyaniline transmittance spectrum analysis to detection and selectivity of different alcohols and acetic acid

Kamikawachi, R. C.; Kuhne, J. F.; Both, K. K. C.; Deus, J. F. de; Macedo, A. G.; Santos, E. P. M. dos; Grizotes, E. S.; Simoes, L. I.; Rodrigues, P. C.; Seidel, K. F.

Full Article:

In this work we demonstrate the potential of the polyaniline to the development of a gas sensor exploring the optical properties of a polymer which was verified by UV-Vis spectroscopy measurements. This polymer used as active material, changes its optical properties when exposed to the vapors of different alcohols and acetic acid. The transmittance spectrum of the samples was measured in the range of 350 nm to 1000 nm and results show that is it possible to made a selective detection among the isopropanol, ethanol and the acetic acid. Analyses of transmittance measurements as a function of exposure time show an exponential behavior. The fit parameters obtained to the different contaminants are used to prove the response time and sensitivity of the polyaniline film and these can be a indicative to develop a sensor functionalized with this organic material.

In this work we demonstrate the potential of the polyaniline to the development of a gas sensor exploring the optical properties of a polymer which was verified by UV-Vis spectroscopy measurements. This polymer used as active material, changes its optical properties when exposed to the vapors of different alcohols and acetic acid. The transmittance spectrum of the samples was measured in the range of 350 nm to 1000 nm and results show that is it possible to made a selective detection among the isopropanol, ethanol and the acetic acid. Analyses of transmittance measurements as a function of exposure time show an exponential behavior. The fit parameters obtained to the different contaminants are used to prove the response time and sensitivity of the polyaniline film and these can be a indicative to develop a sensor functionalized with this organic material.

Palavras-chave:

DOI: 10.5151/chempro-s3ie2016-06

Referências bibliográficas

• [1] ALVARO DÍAZ AGUILAR, ERICA S. FORZANI, XIULAN LI, NONGJIAN TAO, LARRY A. NAGAHARA, ISLAMSHAH AMLANI AND RAYMOND TSUI. Chemical sensors using peptide-functionalized conducting polymer nanojunction arrays. Appl. Phys. Lett. 87, (2005).
• [2] ILARIA FRATODDI, IOLE VENDITTI, CESARE CAMETTI, MARIA VITTORIA RUSSO. Chemiresistive polyaniline-based gas sensors: A mini review. Sensors and Actuators B, 220. (2015).
• [3] KELI F. SEIDEL, LUCIELI ROSSI, REGINA M. Q. MELLO, IVO A. HÜMMELGEN. Vertical organic field effect transistor using sulfonated polyaniline/ aluminum bilayer as intermediate electrode. J Mater Sci: Mater Electron, 24, (2013).
• [4] JUN WANG, SAMUEL CHAN, RICHARD R. CARLSON, YI LUO, GUANGLU GE, RYAN S. RIES, JAMES R. HEATH, HSIAN-RONG TSENG. Electrochemically Fabricated Polyaniline Nanoframework Electrode Junctions that Function as Resistive Sensors. Nano Letters, 4 (9), (2004).

Como citar:

Kamikawachi, R. C.; Kuhne, J. F.; Both, K. K. C.; Deus, J. F. de; Macedo, A. G.; Santos, E. P. M. dos; Grizotes, E. S.; Simoes, L. I.; Rodrigues, P. C.; Seidel, K. F.; "Polyaniline transmittance spectrum analysis to detection and selectivity of different alcohols and acetic acid", p-73-78. In: Proceedings of 2nd International Seminar on Industrial Innovation in Electrochemistry . São Paulo: Blucher, 2016. São Paulo: Blucher, 2016.
ISSN 23184043, DOI 10.5151/chempro-s3ie2016-06