Journal
ENTROPY
Volume 23, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/e23121557
Keywords
hybrid dendrimers; adiabatic calorimetry; DSC; heat capacity; glass transition; thermodynamic functions
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Funding
- Russian Science Foundation [20-13-00025]
- Russian Science Foundation [20-13-00025] Funding Source: Russian Science Foundation
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The molar heat capacity of a first-generation hybrid dendrimer with a carbosilane core/phenylene shell structure was measured for the first time and its thermodynamic properties were calculated in a temperature range of 6-600 K. The results were compared with literature data on some first-generation organosilicon and pyridylphenylene dendrimers.
The molar heat capacity of the first-generation hybrid dendrimer with a carbosilane core/phenylene shell structure was measured for the first time in the temperature range T = 6-600 K using a precise adiabatic vacuum calorimeter and DSC. In the above temperature interval, the glass transition of the studied compound was observed, and its thermodynamic characteristics were determined. The standard thermodynamic functions (the enthalpy, the entropy, and the Gibbs energy) of the hybrid dendrimer were calculated over the range from T = 0 to 600 K using the experimentally determined heat capacity. The standard entropy of formation of the investigated dendrimer was evaluated at T = 298.15 K. The obtained thermodynamic properties of the studied hybrid dendrimer were compared and discussed with the literature data for some of the first-generation organosilicon and pyridylphenylene dendrimers.
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