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Recognition enhancement of oxidized and methyl-10-undecenoate functionalized porous silicon in gas phase photoluminescence sensing
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SYSNO ASEP 0345922 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Recognition enhancement of oxidized and methyl-10-undecenoate functionalized porous silicon in gas phase photoluminescence sensing Author(s) Dian, J. (CZ)
Vrkoslav, Vladimír (UOCHB-X) RID, ORCID
Jelínek, I. (CZ)Number of authors 3 Source Title Sensors and Actuators B - Chemical. - : Elsevier
Roč. 147, - (2010), s. 406-410Number of pages 5 s. Language eng - English Country CH - Switzerland Keywords porous silicon ; photoluminescence ; sensor ; recognition enhancement Subject RIV CC - Organic Chemistry CEZ AV0Z40550506 - UOCHB-X (2005-2011) UT WOS 000278679100005 DOI 10.1016/j.snb.2010.03.073 Annotation We present results of photoluminescence quenching measurements of sensor elements based on asprepared porous silicon, oxidized porous silicon and methyl-10-undecenoate functionalized porous silicon. Sensor response was quantitatively studied for a set of C1–C6 alcohols in gas phase. We demonstrate how functionalization of porous silicon surface modifies the photoluminescence sensor response from the point of view of molecular recognition enhancement for a subgroup of studied analytes. Observed phenomena are discussed in terms of polarity dependent interaction between surface species and various alcohols, surface binding capacity for a given analyte and dielectric quenching due to capillary condensation in porous silicon matrix. Mechanism of modified sensor response is attributed to polar interaction between alcohol groups of detected analytes and Si–OH and Si–O–Si groups at oxidized porous silicon surface and C=O group at methyl-10-undecenoate functionalized porous silicon surface. Workplace Institute of Organic Chemistry and Biochemistry Contact asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Viktorie Chládková, Tel.: 232 002 434 Year of Publishing 2011
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