Europium(III) tris-dibenzoylmethanate as an efficient chemosensor for detection of ammonia

Anatolii G Mirochnik; Nataliya V Petrochenkova; Alexander S Shishov; Boris V Bukvetskii; Tatyana B Emelina; Alexander A Sergeev; Sergey S Voznesenskii

doi:10.1016/j.saa.2015.11.004

Europium(III) tris-dibenzoylmethanate as an efficient chemosensor for detection of ammonia

Spectrochim Acta A Mol Biomol Spectrosc. 2016 Feb 15:155:111-5. doi: 10.1016/j.saa.2015.11.004. Epub 2015 Nov 4.

Authors

Anatolii G Mirochnik¹, Nataliya V Petrochenkova², Alexander S Shishov³, Boris V Bukvetskii³, Tatyana B Emelina³, Alexander A Sergeev⁴, Sergey S Voznesenskii⁴

Affiliations

¹ Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok, 690022, Russia. Electronic address: mirochnik@ich.dvo.ru.
² Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok, 690022, Russia; Nevelskoy Maritime State University, Vladivostok, 690059, Russia.
³ Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok, 690022, Russia.
⁴ Institute of Automatics and Control Processes, Far East Branch, Russian Academy of Sciences, Vladivostok, 690041, Russia.

PMID: 26600058
DOI: 10.1016/j.saa.2015.11.004

Abstract

The effect of ammonia vapor on luminescence of Eu(III) tris-dibenzoylmethanate immobilized in various matrices has been investigated. It has been revealed that interaction of Eu(III) tris-dibenzoylmethanate with analyte vapor results in increase of the intensity of Eu(III) luminescence. The mechanism of the effect of ammonia vapors on intensification of the Eu(III) luminescence has been suggested using the data of IR spectroscopy, X-ray diffraction analysis 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 centre weakens and the blockage of the quenching of luminescence on OH-vibrations takes place.

Keywords: Ammonia; Chemosensors; Dibenzoylmethanate; Europium(III); Luminescence.

Publication types

Research Support, Non-U.S. Gov't