{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T19:35:14Z","timestamp":1772912114798,"version":"3.50.1"},"reference-count":21,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2010,3,29]],"date-time":"2010-03-29T00:00:00Z","timestamp":1269820800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The conductive blend of the poly (3,4-ethylene dioxythiophene) and polystyrene sulfonated acid (PEDOT-PSS) polymers were doped with Methyl Red (MR) dye in the acid form and were used as the basis for a chemiresistor sensor for detection of ethanol vapor. This Au\u2502Polymers-dye blend\u2502Au device was manufactured by chemical vapor deposition and spin-coating, the first for deposition of the metal electrodes onto a glass substrate, and the second for preparation of the organic thin film forming ~1.0 mm2 of active area. The results obtained are the following: (i) electrical resistance dependence with atmospheres containing ethanol vapor carried by nitrogen gas and humidity; (ii) sensitivity at 1.15 for limit detection of 26.25 ppm analyte and an operating temperature of 25 \u00b0C; and (iii) the sensing process is quickly reversible and shows very a low power consumption of 20 \u03bcW. The thin film morphology of ~200 nm thickness was analyzed by Atomic Force Microscopy (AFM), where it was observed to have a peculiarly granulometric surface favorable to adsorption. This work indicates that PEDOT-PSS doped with MR dye to compose blend film shows good performance like resistive sensor.<\/jats:p>","DOI":"10.3390\/s100402812","type":"journal-article","created":{"date-parts":[[2010,3,29]],"date-time":"2010-03-29T11:15:16Z","timestamp":1269861316000},"page":"2812-2820","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Development of a Chemiresistor Sensor Based on Polymers-Dye Blend for Detection of Ethanol Vapor"],"prefix":"10.3390","volume":"10","author":[{"given":"Marcos A. L.","family":"Dos Reis","sequence":"first","affiliation":[{"name":"P\u00f3s-gradua\u00e7\u00e3o em Engenharia El\u00e9trica, Universidade Federal do Par\u00e1, 66075-900, Bel\u00e9m-PA, Brazil"}]},{"given":"Fabiano","family":"Thomazi","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Universidade Federal do Paran\u00e1, 81531-990, Curitiba-PR, Brazil"}]},{"given":"Jordan","family":"Del Nero","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Universidade Federal do Par\u00e1, 66075-110, Bel\u00e9m-PA, Brazil"}]},{"given":"Lucimara S.","family":"Roman","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Universidade Federal do Paran\u00e1, 81531-990, Curitiba-PR, Brazil"}]}],"member":"1968","published-online":{"date-parts":[[2010,3,29]]},"reference":[{"key":"ref_1","first-page":"549","article-title":"Advances in sensors based on conducting polymers","volume":"65","author":"Gupta","year":"2006","journal-title":"J. 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