Dependence of (1)H-NMR T(1) relaxation time of trimethylglycine betaine deep eutectic solvents on the molar composition and on the presence of water

(1)H-NMR spin lattice relaxation times (T(1)), measured by inversion recovery technique, allowed to establish the stoichiometric coefficient (ratio between the H-bond acceptor and H-bond donor) of a series of trimethylglycine betaine/diol based deep eutectic solvents (DESs); ethylene glycol, triethy...

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Autores principales: Allegretti, Chiara, D'Arrigo, Paola, Gatti, Francesco G., Rossato, Letizia A. M., Ruffini, Eleonora
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9850698/
https://www.ncbi.nlm.nih.gov/pubmed/36756439
http://dx.doi.org/10.1039/d2ra08082f
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author Allegretti, Chiara
D'Arrigo, Paola
Gatti, Francesco G.
Rossato, Letizia A. M.
Ruffini, Eleonora
author_facet Allegretti, Chiara
D'Arrigo, Paola
Gatti, Francesco G.
Rossato, Letizia A. M.
Ruffini, Eleonora
author_sort Allegretti, Chiara
collection PubMed
description (1)H-NMR spin lattice relaxation times (T(1)), measured by inversion recovery technique, allowed to establish the stoichiometric coefficient (ratio between the H-bond acceptor and H-bond donor) of a series of trimethylglycine betaine/diol based deep eutectic solvents (DESs); ethylene glycol, triethylene glycol and 1,3-propandiol were selected as H-bond donors. The maximum amount of water tolerated by the DES, before its complete hydration, was determined as well. Finally, the method was validated comparing the eutectic composition of the betaine/glycol system with that determined by means of differential scanning calorimetry analysis; the stoichiometric coefficients were identical.
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spelling pubmed-98506982023-02-07 Dependence of (1)H-NMR T(1) relaxation time of trimethylglycine betaine deep eutectic solvents on the molar composition and on the presence of water Allegretti, Chiara D'Arrigo, Paola Gatti, Francesco G. Rossato, Letizia A. M. Ruffini, Eleonora RSC Adv Chemistry (1)H-NMR spin lattice relaxation times (T(1)), measured by inversion recovery technique, allowed to establish the stoichiometric coefficient (ratio between the H-bond acceptor and H-bond donor) of a series of trimethylglycine betaine/diol based deep eutectic solvents (DESs); ethylene glycol, triethylene glycol and 1,3-propandiol were selected as H-bond donors. The maximum amount of water tolerated by the DES, before its complete hydration, was determined as well. Finally, the method was validated comparing the eutectic composition of the betaine/glycol system with that determined by means of differential scanning calorimetry analysis; the stoichiometric coefficients were identical. The Royal Society of Chemistry 2023-01-19 /pmc/articles/PMC9850698/ /pubmed/36756439 http://dx.doi.org/10.1039/d2ra08082f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Allegretti, Chiara
D'Arrigo, Paola
Gatti, Francesco G.
Rossato, Letizia A. M.
Ruffini, Eleonora
Dependence of (1)H-NMR T(1) relaxation time of trimethylglycine betaine deep eutectic solvents on the molar composition and on the presence of water
title Dependence of (1)H-NMR T(1) relaxation time of trimethylglycine betaine deep eutectic solvents on the molar composition and on the presence of water
title_full Dependence of (1)H-NMR T(1) relaxation time of trimethylglycine betaine deep eutectic solvents on the molar composition and on the presence of water
title_fullStr Dependence of (1)H-NMR T(1) relaxation time of trimethylglycine betaine deep eutectic solvents on the molar composition and on the presence of water
title_full_unstemmed Dependence of (1)H-NMR T(1) relaxation time of trimethylglycine betaine deep eutectic solvents on the molar composition and on the presence of water
title_short Dependence of (1)H-NMR T(1) relaxation time of trimethylglycine betaine deep eutectic solvents on the molar composition and on the presence of water
title_sort dependence of (1)h-nmr t(1) relaxation time of trimethylglycine betaine deep eutectic solvents on the molar composition and on the presence of water
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9850698/
https://www.ncbi.nlm.nih.gov/pubmed/36756439
http://dx.doi.org/10.1039/d2ra08082f
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