Utilizing a pH-Sensitive Dye in the Selective Fluorescent Recognition of Sulfate Full article
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Chemistry - A European Journal
ISSN: 0947-6539 , E-ISSN: 1521-3765 |
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| Output data | Year: 2016, Volume: 22, Number: 42, Pages: 15069-15074 Pages count : DOI: 10.1002/chem.201602623 | ||||||||
| Tags | anions; fluorescent probes; molecular recognition; naphthalimide; supramolecular chemistry | ||||||||
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Abstract:
A receptor containing amidopyrrole binding subunits and free amino groups, conjugated to a naphthalimide dye, has been designed and synthesized. The intrinsic selectivity of the binding motif for phosphate present in DMSO completely disappears in 10% DMSO aqueous buffer at pH 3.6, at which the receptor is protonated. The electrostatic interactions between the receptor and an anion start to dominate, thus leading to selectivity for sulfate. The ability of the HSO(4)(-)anion to transfer the proton to the amino group during the recognition event suppresses the photoinduced electron transfer (PET) on the dye, resulting in a selective turn-on fluorescent response. The choice of pH of the solution for sensing is dictated by the pK(a) value of the dye.
Cite:
Agafontsev A.M.
, Shumilova T.A.
, Panchenko P.A.
, Janz S.
, Fedorova O.A.
, Kataev E.A.
Utilizing a pH-Sensitive Dye in the Selective Fluorescent Recognition of Sulfate
Chemistry - A European Journal. 2016. V.22. N42. P.15069-15074. DOI: 10.1002/chem.201602623 WOS Scopus РИНЦ OpenAlex
Utilizing a pH-Sensitive Dye in the Selective Fluorescent Recognition of Sulfate
Chemistry - A European Journal. 2016. V.22. N42. P.15069-15074. DOI: 10.1002/chem.201602623 WOS Scopus РИНЦ OpenAlex
Dates:
| Published online: | Sep 5, 2016 |
| Published print: | Oct 10, 2016 |
Identifiers:
| Web of science: | WOS:000384806700014 |
| Scopus: | 2-s2.0-84989907584 |
| Elibrary: | 27571464 |
| OpenAlex: | W2511799359 |