КФУ. Карточка публикации. Fusion thermodynamics of native cyclodextrins

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ФЕДЕРАЛЬНЫЙ УНИВЕРСИТЕТ

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FUSION THERMODYNAMICS OF NATIVE CYCLODEXTRINS

Форма представления

Статьи в зарубежных журналах и сборниках

Год публикации

2025

Язык

английский

Авторы, сотрудники КФУ

Гатиатулин Аскар Камилевич, автор

Горбачук Валерий Виленович, автор

Зиганшин Марат Ахмедович, автор

Библиографическое описание на языке оригинала

Gatiatulin A.K., Gabdulkhaev M.N., Tagirov S.R., Fusion thermodynamics of native cyclodextrins//Thermochimica Acta. - 2025. - Vol.753, Is.. - Art. №180115.

Аннотация

The fusion thermodynamics of native cyclodextrins was studied, which provides a basis for modelling their behavior in various applications. The fusion enthalpies and entropies of high-temperature polymorphs of α-cyclodextrin and β-cyclodextrin were determined using fast scanning calorimetry with a heating rate up to 40,000 K s–1. A high-temperature polymorph of anhydrous α-cyclodextrin (polymorph III) was obtained and for the first time characterized using powder X-ray diffraction and thermal analysis. The comparison of experimental fusion enthalpies of native cyclodextrins with the data of theoretical additive-constitutive model shows a good agreement for β-cyclodextrin and previously studied γ-cyclodextrin. The experimental data on fusion entropy were used to estimate the flexibility of cyclodextrin molecules in liquid state. The flexibility of β-cyclodextrin and γ-cyclodextrin is close to the theoretical values for corresponding non-macrocyclic oligosaccharides, while as α-cyclodextrin molecule remains rigid in liquid phase. This is a factor in favor of the higher α-cyclodextrin affinity for guests that can be accommodated in its cavity.

Ключевые слова

Cyclodextrin, Fast scanning calorimetry, Polymorphism, Fusion enthalpy, Fusion entropy

Название журнала

THERMOCHIMICA ACTA

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-105014515535&doi=10.1016%2Fj.tca.2025.180115&partnerID=40&md5=fee5d4f67729fcbae1b3c7379f9bc2af

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https://repository.kpfu.ru/?p_id=318945

Полная запись метаданных

Поле DC	Значение	Язык
dc.contributor.author	Гатиатулин Аскар Камилевич	ru_RU
dc.contributor.author	Горбачук Валерий Виленович	ru_RU
dc.contributor.author	Зиганшин Марат Ахмедович	ru_RU
dc.date.accessioned	2025-01-01T00:00:00Z	ru_RU
dc.date.available	2025-01-01T00:00:00Z	ru_RU
dc.date.issued	2025	ru_RU
dc.identifier.citation	Gatiatulin A.K., Gabdulkhaev M.N., Tagirov S.R., Fusion thermodynamics of native cyclodextrins//Thermochimica Acta. - 2025. - Vol.753, Is.. - Art. №180115.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/?p_id=318945	ru_RU
dc.description.abstract	THERMOCHIMICA ACTA	ru_RU
dc.description.abstract	The fusion thermodynamics of native cyclodextrins was studied, which provides a basis for modelling their behavior in various applications. The fusion enthalpies and entropies of high-temperature polymorphs of α-cyclodextrin and β-cyclodextrin were determined using fast scanning calorimetry with a heating rate up to 40,000 K s–1. A high-temperature polymorph of anhydrous α-cyclodextrin (polymorph III) was obtained and for the first time characterized using powder X-ray diffraction and thermal analysis. The comparison of experimental fusion enthalpies of native cyclodextrins with the data of theoretical additive-constitutive model shows a good agreement for β-cyclodextrin and previously studied γ-cyclodextrin. The experimental data on fusion entropy were used to estimate the flexibility of cyclodextrin molecules in liquid state. The flexibility of β-cyclodextrin and γ-cyclodextrin is close to the theoretical values for corresponding non-macrocyclic oligosaccharides, while as α-cyclodextrin molecule remains rigid in liquid phase. This is a factor in favor of the higher α-cyclodextrin affinity for guests that can be accommodated in its cavity.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Cyclodextrin	ru_RU
dc.subject	Fast scanning calorimetry	ru_RU
dc.subject	Polymorphism	ru_RU
dc.subject	Fusion enthalpy	ru_RU
dc.subject	Fusion entropy	ru_RU
dc.title	Fusion thermodynamics of native cyclodextrins	ru_RU
dc.type	Статьи в зарубежных журналах и сборниках	ru_RU