Heat Capacities of α-, β-, and γ- Polymorphs of Glycine
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F24%3A43930278" target="_blank" >RIV/60461373:22340/24:43930278 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/60461373:22810/24:43930278
Výsledek na webu
<a href="https://www.mdpi.com/1420-3049/29/22/5366" target="_blank" >https://www.mdpi.com/1420-3049/29/22/5366</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/molecules29225366" target="_blank" >10.3390/molecules29225366</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Heat Capacities of α-, β-, and γ- Polymorphs of Glycine
Popis výsledku v původním jazyce
As a part of our effort to establish reliable thermodynamic data for amino acids, the heat capacity and phase behavior are reported for two stable polymorphs (alpha and gamma) of glycine (aminoacetic acid, CAS RN: 56-40-6). Prior to heat capacity measurement, thermogravimetric analysis and X-ray powder diffraction were performed to determine decomposition temperatures and initial crystal structures, respectively. The literature heat capacities obtained by adiabatic calorimetry are available in the temperature interval (7-304). The literature data were used for validating performance of our relaxation (heat-pulse) calorimeter, which was used for measurement of the heat capacity of alpha-glycine in the temperature interval (2-267) K. The crystal heat capacities of the alpha- and gamma-glycine were extended towards higher temperatures using Tian-Calvet calorimetry in the temperature interval (262-358) and power compensation DSC in the temperature interval (310-449) K. As a result, reference heat capacities and thermodynamic functions for the crystalline phase from 0 K up to 450/435 K for alpha/gamma-glycine were developed. The literature heat capacities for beta-glycine over the range 0 K to 295 K were treated in the same manner in order to provide thermodynamic data for all three polymorphs existing at the atmospheric pressure.
Název v anglickém jazyce
Heat Capacities of α-, β-, and γ- Polymorphs of Glycine
Popis výsledku anglicky
As a part of our effort to establish reliable thermodynamic data for amino acids, the heat capacity and phase behavior are reported for two stable polymorphs (alpha and gamma) of glycine (aminoacetic acid, CAS RN: 56-40-6). Prior to heat capacity measurement, thermogravimetric analysis and X-ray powder diffraction were performed to determine decomposition temperatures and initial crystal structures, respectively. The literature heat capacities obtained by adiabatic calorimetry are available in the temperature interval (7-304). The literature data were used for validating performance of our relaxation (heat-pulse) calorimeter, which was used for measurement of the heat capacity of alpha-glycine in the temperature interval (2-267) K. The crystal heat capacities of the alpha- and gamma-glycine were extended towards higher temperatures using Tian-Calvet calorimetry in the temperature interval (262-358) and power compensation DSC in the temperature interval (310-449) K. As a result, reference heat capacities and thermodynamic functions for the crystalline phase from 0 K up to 450/435 K for alpha/gamma-glycine were developed. The literature heat capacities for beta-glycine over the range 0 K to 295 K were treated in the same manner in order to provide thermodynamic data for all three polymorphs existing at the atmospheric pressure.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10403 - Physical chemistry
Návaznosti výsledku
Projekt
<a href="/cs/project/GA22-07164S" target="_blank" >GA22-07164S: Racionální návrh systémů pro dodávání léčiv založených na laditelných biodegradabilních polymerech: iterativní in silico a experimentální postup</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
MOLECULES
ISSN
1420-3049
e-ISSN
1420-3049
Svazek periodika
29
Číslo periodika v rámci svazku
22
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
14
Strana od-do
5366
Kód UT WoS článku
001365279200001
EID výsledku v databázi Scopus
2-s2.0-85210179706