Synthesis and binding properties of calix[4]biscrown-based fluorescent molecular sensors for caesium or potassium ions
Тип публикации: Journal Article
Дата публикации: 2002-09-18
SJR: —
CiteScore: —
Impact factor: —
ISSN: 03009580, 13645471, 1472779X
General Environmental Science
General Earth and Planetary Sciences
Краткое описание
The synthesis of two new fluorescent molecular sensors based on calix[4]biscrowns is reported. A dioxycoumarin fluorophore was incorporated into one of the crowns or into both crowns, leading to Calix-COU1 and Calix-COU2, respectively. The stability constants of the 1 ∶ 1 and 1 ∶ 2 complexes with potassium and caesium ions in ethanol or acetonitrile were measured. An anticooperative effect was observed when binding a second cation to the 1 ∶ 1 complex owing to electrostatic repulsion. The selectivity of Calix-COU1 in ethanol expressed as the ratio of the stability constants of the 1 ∶ 1 complexes was found to be about 4 × 104 for Cs+versus Na+ and greater than 500 for K+versus Na+. The origin of the cation-induced changes in the photophysical properties is discussed.
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ГОСТ
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Leray I. et al. Synthesis and binding properties of calix[4]biscrown-based fluorescent molecular sensors for caesium or potassium ions // Journal of the Chemical Society Perkin Transactions 2. 2002. Vol. 8. p. 1429.
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Leray I., Asfari Z., Vicens J., Valeur B. Synthesis and binding properties of calix[4]biscrown-based fluorescent molecular sensors for caesium or potassium ions // Journal of the Chemical Society Perkin Transactions 2. 2002. Vol. 8. p. 1429.
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TY - JOUR
DO - 10.1039/b203633a
UR - https://doi.org/10.1039/b203633a
TI - Synthesis and binding properties of calix[4]biscrown-based fluorescent molecular sensors for caesium or potassium ions
T2 - Journal of the Chemical Society Perkin Transactions 2
AU - Leray, Isabelle
AU - Asfari, Zouhair
AU - Vicens, Jacques
AU - Valeur, Bernard
PY - 2002
DA - 2002/09/18
PB - Royal Society of Chemistry (RSC)
SP - 1429
IS - 8
SN - 0300-9580
SN - 1364-5471
SN - 1472-779X
ER -
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@article{2002_Leray,
author = {Isabelle Leray and Zouhair Asfari and Jacques Vicens and Bernard Valeur},
title = {Synthesis and binding properties of calix[4]biscrown-based fluorescent molecular sensors for caesium or potassium ions},
journal = {Journal of the Chemical Society Perkin Transactions 2},
year = {2002},
publisher = {Royal Society of Chemistry (RSC)},
month = {sep},
url = {https://doi.org/10.1039/b203633a},
number = {8},
pages = {1429},
doi = {10.1039/b203633a}
}