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Interaction of nitrogen dioxide with sulfonamide-substituted phthalocyanines: Towards NO2 gas sensor
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SYSNO ASEP 0377481 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Interaction of nitrogen dioxide with sulfonamide-substituted phthalocyanines: Towards NO2 gas sensor Tvůrce(i) Pochekailov, Sergii (UMCH-V)
Nožár, Juraj (UMCH-V)
Nešpůrek, Stanislav (UMCH-V) RID
Rakušan, J. (CZ)
Karásková, M. (CZ)Zdroj.dok. Sensors and Actuators B - Chemical. - : Elsevier
Roč. 169, 5 July (2012), s. 1-9Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova phthalocyanine ; sulfonamide ; nitrogen dioxide Vědní obor RIV CG - Elektrochemie CEP KAN400720701 GA AV ČR - Akademie věd FR-TI1/144 GA MPO - Ministerstvo průmyslu a obchodu CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000305719600001 DOI 10.1016/j.snb.2011.12.087 Anotace We study the properties of soluble sulfonamide-substituted zinc and metal-free phthalocyanines. The sensing capabilities of these materials are discussed in detail. We have found that Zn sulfonamide-substituted phthalocyanine (Pc) forms a charge transfer complex with nitrogen dioxide, which results in a change of absorption spectrum and an increase of electrical conductivity as much as two orders of magnitude. On the other hand, metal-free Pc does not form the complex and its interaction with nitrogen dioxide is based on weak Van-der-Waals forces. The absorption spectrum does not change and the electrical conductivity slightly decreases during nitrogen dioxide exposure. We have also found that these materials, unlike literature reported derivatives, are reversibly sensitive to nitrogen dioxide at room temperature. This opens a great potential for the fabrication of cheap and reliable gas sensors. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2013
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