«Фараби Әлемі» атты студенттер мен жас ғалымдардың халықаралық конференциясы
282
AROMATIC NITROPHENOLS SELECTIVE SENSORS
Zakirov Z. Y.
1,2
, Omirzakova A.T.
2,3
Research supervisor: c.ch.s., senior teacher Vassilina G.K.
1,2
1
Al-Farabi Kazakh National University,
2
Society of Petroleum Engineers International,
3
Nazarbayev University
abuzhassulan@gmail.com
Among several contaminants of the environment, nitro-aromatic compounds (NACs) not only
are highly explosive but highly toxic. Nitro-aromatic compounds can be the reason for the water
and soil contamination which will dangerous threat to the ecology. Ecological quality control
methods are existing on the spectroscopic based techniques; however, each of them had several
limitations such as interference, overlapping, low LOD, etc. For the detection of the low
concentrations of NACs would be applicable fluorescence-based detection methods such as UV-Vis
analysis which is high selective and short response time. [1]
The advance of fluorescence-based analysis method directly depends on the molecular
structure and optical properties of fluorescent agent. Considering NACs properties, fluorescent
agent should be also a non-polar compound. At the same time NACs structure depending on the
position of nitro- functional group around the phenyl group (o-, m-, p-) affects to the intensity of
obtaining peaks by the UV-Vis analysis.
The suitable fluorescent agent was developed as a metal-organic frameworks on the basis of
Zn
complexes.
The
new
fluorescent
agent
had
in
the
structure
[Zn
2
(TCPE)(tta)
2
]*2DMF*4H
2
O*2MeNH
2
+
, the other name was HNU-34. The main advance of the
obtained fluorescent was LODs for 2.6-dinitrophenol and trinitrophenol were 29.45 and 36.15nM.
H
4
TCPE was 1,1,2,2-tetra(4-carboxylphenyl)ethylene and H-tta = 1H-tetrazole. Quenching
efficiency for TNP was about 99%.
«Фараби Әлемі» атты студенттер мен жас ғалымдардың халықаралық конференциясы
283
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