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Proceedings Paper

Luminescent chemosensors for amines and ammonia based on Eu(III) chelate complexes
Author(s): Alexander A. Sergeev; Sergey S. Voznesenskiy; Nataliya V. Petrochenkova; Alexander S. Shishov; Andrei A. Leonov; Tatiana B. Emelina; Anatolii G. Mirochnik; Yuri N. Kulchin
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Paper Abstract

Here we report a novel luminescent sensor for amines and ammonia based on Eu(III) tris-β-benzoylacetonate complexes obtained in various conditions. It has been revealed that interaction of Eu(III) tris-β-benzoylacetonate with analyte vapor results in increase of the Eu(III) luminescence intensity. Exposure of Eu(III) complexes to ammonia and methylamine vapors results in a rapid increase of the emission and excitation spectra intensity and a rapid recovery, almost to the initial value, when the sample is exposed to air. Moreover, luminescence decay time value of Eu(III) complexes is in dependence on analyte presence and increase in ammonia atmosphere and decrease under purging of pure air. The dependences of sensor response features upon preparation conditions were shown. The mechanism of the analyte vapors effect on Eu(III) luminescence intensification has been suggested using the data of IR spectroscopy and quantum chemistry calculations. The mechanism of luminescence sensitization consists in bonding of an analyte molecule with a water molecule into the coordination sphere of Eu(III). As a result, the bond of a water molecule with the luminescence center weakens and the blockage of the quenching of luminescence on OH-vibrations takes place. The obtained data can be used for development of sensor materials with selective optical sensitivity to ecologically harmful vapours of organic and inorganic compounds.

Paper Details

Date Published: 14 December 2016
PDF: 9 pages
Proc. SPIE 10176, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics, 1017610 (14 December 2016); doi: 10.1117/12.2268131
Show Author Affiliations
Alexander A. Sergeev, Institute for Automation and Control Processes (Russian Federation)
Far Eastern Federal Univ. (Russian Federation)
Sergey S. Voznesenskiy, Institute for Automation and Control Processes (Russian Federation)
Far Eastern Federal Univ. (Russian Federation)
Nataliya V. Petrochenkova, Institute of Chemistry (Russian Federation)
Alexander S. Shishov, Institute of Chemistry (Russian Federation)
Andrei A. Leonov, Institute for Automation and Control Processes (Russian Federation)
Far Eastern Federal Univ. (Russian Federation)
Tatiana B. Emelina, Institute of Chemistry (Russian Federation)
Anatolii G. Mirochnik, Institute of Chemistry (Russian Federation)
Yuri N. Kulchin, Institute for Automation and Control Processes (Russian Federation)
Far Eastern Federal Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 10176:
Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics
Yuri N. Kulchin; Roman V. Romashko; Alexander V. Syuy, Editor(s)

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