Calorimetric study on the interaction of didecyldimethylammonium and decyltrimethylammonium cations with native cyclodextrins in water

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F16%3A43901668" target="_blank" >RIV/60461373:22340/16:43901668 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0021961416000495" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0021961416000495</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jct.2016.01.027" target="_blank" >10.1016/j.jct.2016.01.027</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Calorimetric study on the interaction of didecyldimethylammonium and decyltrimethylammonium cations with native cyclodextrins in water

Popis výsledku v původním jazyce

The interaction of two decylammonium surfactants, didecyldimethylammonium bromide (D) and decyltrimethylammonium bromide (S), with native a -, b-, and c -cyclodextrins (CDs) was systematically examined using the isothermal titration calorimetry (ITC). The measured heat data at five temperatures ranging from (283.15 to 318.15) K were treated simultaneously allowing the estimation of thermody- namically consistent temperature dependence of the equilibrium constant, the enthalpy and heat capacity for the formation of inclusion complexes. The heat data for D/ a -CD interaction were analysed by the sequential binding model with 1:1, 1:2 and 1:3 (D: a -CD) stoichiometries, while other surfactant-CD combinations were examined using only 1:1 and 1:2/2:1 stoichiometries. Thermodynamic quantities for complexation are discussed in terms of structural features and their temperature dependence. The enthalpy-entropy compensation analysis of selected surfactant-CD 1:1 complexes obeys a linear relationship. Due to entropical stabilization caused to a high extent by alkyl chain desolvation, the >C 10 bearing ions were found not to follow the patterns previously published on binding of other guests. The prediction of the binding thermodynamic properties of D/CD from the S/CD interaction was tested and found surprisingly accurate.

Název v anglickém jazyce

Calorimetric study on the interaction of didecyldimethylammonium and decyltrimethylammonium cations with native cyclodextrins in water

Popis výsledku anglicky

The interaction of two decylammonium surfactants, didecyldimethylammonium bromide (D) and decyltrimethylammonium bromide (S), with native a -, b-, and c -cyclodextrins (CDs) was systematically examined using the isothermal titration calorimetry (ITC). The measured heat data at five temperatures ranging from (283.15 to 318.15) K were treated simultaneously allowing the estimation of thermody- namically consistent temperature dependence of the equilibrium constant, the enthalpy and heat capacity for the formation of inclusion complexes. The heat data for D/ a -CD interaction were analysed by the sequential binding model with 1:1, 1:2 and 1:3 (D: a -CD) stoichiometries, while other surfactant-CD combinations were examined using only 1:1 and 1:2/2:1 stoichiometries. Thermodynamic quantities for complexation are discussed in terms of structural features and their temperature dependence. The enthalpy-entropy compensation analysis of selected surfactant-CD 1:1 complexes obeys a linear relationship. Due to entropical stabilization caused to a high extent by alkyl chain desolvation, the >C 10 bearing ions were found not to follow the patterns previously published on binding of other guests. The prediction of the binding thermodynamic properties of D/CD from the S/CD interaction was tested and found surprisingly accurate.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Chemical Thermodynamics

ISSN

0021-9614

e-ISSN

—

Svazek periodika

97

Číslo periodika v rámci svazku

08.02.2016

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

235-243

Kód UT WoS článku

000373488800030

EID výsledku v databázi Scopus

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