2018
Thermodynamics of Halide Binding to a Neutral Bambusuril in Water and Organic Solvents
FIALA, Tomáš; Kristína SLEZIAKOVÁ; Kamil MARŠÁLEK; Karolina SALVADORI; Vladimír ŠINDELÁŘ et al.Základní údaje
Originální název
Thermodynamics of Halide Binding to a Neutral Bambusuril in Water and Organic Solvents
Autoři
Vydání
Journal of Organic Chemistry, WASHINGTON, AMER CHEMICAL SOC, 2018, 0022-3263
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10401 Organic chemistry
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.745
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/18:00100978
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
SOLVATION ENERGY RELATIONSHIPS; ANION-BINDING; LIQUID CHLOROFORM; SUPRAMOLECULAR COMPLEXES; MOLECULAR-DYNAMICS; HIGH-AFFINITY; RECOGNITION; IONS; SUBSTITUTION; RECEPTOR
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 2. 6. 2018 12:25, Mgr. Michaela Hylsová, Ph.D.
Anotace
V originále
Driving forces of anion binding in water in contrast to nonpolar environments are of high interest because of their relevance to biology and medicine. Here we report a neutral bambusuril macrocycle (1), soluble in both water and nonpolar solvents due to decoration with 12 polyethylene glycol-based substituents. The new bambusuril has the highest affinity for I- in pure water ever reported for a synthetic macrocycle relying on hydrogen bonding interactions rather than metal coordination or Coulombic forces. Isothermal titration calorimetry (ITC) experiments in nine different solvents, ranging from polar water to nonpolar carbon tetrachloride, provided insight into the forces responsible for halide binding by bambusurils. The different importance of anion solvation and solvent expulsion from the cavity of the macrocycle in various solvents is illustrated by the fact that halide binding in water and chloroform is exclusively driven by favorable enthalpy with an entropic penalty, while in alcohols and nonpolar solvents, both favorable enthalpy and entropy contribute to anion encapsulation. DFT calculations and correlation of thermodynamic data with the solvent Swain acity parameter further underscore the importance of solvent effects on anion binding by bambusurils.
Návaznosti
| CZ.02.1.01/0.0/0.0/16_013/0001761, interní kód MU |
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| GA13-15576S, projekt VaV |
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| LM2015043, projekt VaV |
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| LM2015051, projekt VaV |
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