Applications of Fluorescent Sensor Based on 1H-pyrazolo3,4-bquinoline in Analytical ChemistryReport as inadecuate




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Journal of Fluorescence

, Volume 23, Issue 6, pp 1207–1215

First Online: 30 June 2013Received: 27 March 2013Accepted: 17 June 2013DOI: 10.1007-s10895-013-1251-5

Cite this article as: Mac, M., Uchacz, T., Danel, A. et al. J Fluoresc 2013 23: 1207. doi:10.1007-s10895-013-1251-5

Abstract

Fluorescent dye 2-2-Hydroxyethyl-1,3-diphenyl-1H-pyrazolo3,4-bquinolin-6-ylmethyl-aminoethanol LL1 was examined for its efficiency in the detection of small inorganic cations lithium, sodium, barium, calcium, magnesium, cadmium, lead and zinc. The dye was synthesized in the laboratory and investigated by means of both, steady-state and time-resolved fluorescence techniques. This compound acts as a fluorescent sensor suitable for detection of small inorganic cations lithium, sodium, barium, calcium, magnesium, cadmium, lead and zinc in strongly polar solvent acetonitrile. An electron transfer from the electro-donative part receptor of the molecule to the acceptor part fluorophore is thought to be the main mechanism that underlies functionality of the compound as a sensor. This process can be retarded upon complexation of the receptor moiety by inorganic cations. Relatively high sensitivity but poor selectivity of the aminoalcohol thatcontains indicator towards the two-valued cations was observed. However, upon addition of some amounts of water the selectivity of this sensor has been enhanced especially towards lead cation. The preliminary results in analytical application of the sensor are discussed.

KeywordsFluorescent molecular probes Photoinduced electron transfer Time resolved fluorescence Pyrazolo3,4-bquinoline  Download fulltext PDF



Author: Marek Mac - Tomasz Uchacz - Andrzej Danel - Hanna Musiolik

Source: https://link.springer.com/







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