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Mastnak T, Lobnik A, Mohr GJ, et al. Design and Characterization of Dicyanovinyl Reactive Dyes for the Colorimetric Detection of Thiols and Biogenic Amines. Sensors (Basel). 2018;18(3)doi: 10.3390/s18030814.
Mastnak, T., Lobnik, A., Mohr, G. J., & Turel, M. (2018). Design and Characterization of Dicyanovinyl Reactive Dyes for the Colorimetric Detection of Thiols and Biogenic Amines. Sensors (Basel, Switzerland), 18(3), . https://doi.org/10.3390/s18030814
Mastnak, Tinkara, et al. "Design and Characterization of Dicyanovinyl Reactive Dyes for the Colorimetric Detection of Thiols and Biogenic Amines." Sensors (Basel, Switzerland) vol. 18,3 (2018). doi: https://doi.org/10.3390/s18030814
Mastnak T, Lobnik A, Mohr GJ, Turel M. Design and Characterization of Dicyanovinyl Reactive Dyes for the Colorimetric Detection of Thiols and Biogenic Amines. Sensors (Basel). 2018 Mar 08;18(3). doi: 10.3390/s18030814. PMID: 29518001; PMCID: PMC5876516.
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Sensors (Basel). 2018 Mar 08;18(3). doi: 10.3390/s18030814.

Design and Characterization of Dicyanovinyl Reactive Dyes for the Colorimetric Detection of Thiols and Biogenic Amines.

Sensors (Basel, Switzerland)

Tinkara Mastnak, Aleksandra Lobnik, Gerhard J Mohr, Matejka Turel

Affiliations

  1. Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia. [email protected].
  2. Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia. [email protected].
  3. Institute for Environmental Protection and Sensors, Beloruska 7, SI-2000 Maribor, Slovenia. [email protected].
  4. JOANNEUM RESEARCH Forschungsgesellschaft mbH-Materials, Franz-Pichler-Straße 30, A-8160 Weiz, Austria. [email protected].
  5. Institute for Environmental Protection and Sensors, Beloruska 7, SI-2000 Maribor, Slovenia. [email protected].

PMID: 29518001 PMCID: PMC5876516 DOI: 10.3390/s18030814

Abstract

The synthesis of two new azobenzene dyes, namely CR-528 and CR-555, and their spectral properties in ethanol solution are described. The recognition of sulfur-containing analytes (2-mercaptoethanol (2-ME), sodium hydrosulfide (NaHS)), and biogenic amines (spermine, spermidine, ethanolamine) bestowed significant spectral changes with color changes from pink/purple to pale yellow/orange-yellow. The nitro acceptor group in the dicyanovinyl reactive dye contributes to higher sensitivity and lower detected analyte concentrations. The absorption maxima of both the dyes are at wavelengths compatible with low-cost light sources and detectors, making them excellent candidates for optical probes that are economic, simple to use, and do not require well-trained personnel.

Keywords: absorption; biogenic amines; chromoreactand; indicator dye; thiols

Conflict of interest statement

The authors declare no conflict of interest.

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