Thermodynamic properties of first- and third-generation carbosilane dendrimers with terminal phenyldioxolane groups
- Authors: Smirnova N.N.1, Sologubov S.S.1, Sarmini Y.A.1, Markin A.V.1, Novozhilova N.A.2, Tatarinova E.A.2, Muzafarov A.M.3
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Affiliations:
- Lobachevsky State University
- Enikolopov Institute of Synthetic Polymeric Materials
- Nesmeyanov Institute of Organoelement Compounds
- Issue: Vol 91, No 12 (2017)
- Pages: 2317-2325
- Section: Chemical Thermodynamics and Thermochemistry
- URL: https://journals.rcsi.science/0036-0244/article/view/169791
- DOI: https://doi.org/10.1134/S0036024417110279
- ID: 169791
Cite item
Abstract
The heat capacities of first- and third-generation carbosilane dendrimers with terminal phenyldioxolane groups are studied as a function of temperature via vacuum and differential scanning calorimetry in the range of 6 to 520 K. Physical transformations that occur in the above temperature range are detected and their standard thermodynamic characteristics are determined and analyzed. Standard thermodynamic functions Cpο(T), [H°(T) − H°(0)], [S°(T) − S°(0)], and [G°(T) − H°(0)] in the temperature range of T → 0 to 520 K for different physical states and the standard entropies of formation of the studied dendrimers at T = 298.15 K are calculated, based on the obtained experimental data.
About the authors
N. N. Smirnova
Lobachevsky State University
Email: markin@calorimetry-center.ru
Russian Federation, Nizhny Novgorod, 603950
S. S. Sologubov
Lobachevsky State University
Email: markin@calorimetry-center.ru
Russian Federation, Nizhny Novgorod, 603950
Yu. A. Sarmini
Lobachevsky State University
Email: markin@calorimetry-center.ru
Russian Federation, Nizhny Novgorod, 603950
A. V. Markin
Lobachevsky State University
Author for correspondence.
Email: markin@calorimetry-center.ru
Russian Federation, Nizhny Novgorod, 603950
N. A. Novozhilova
Enikolopov Institute of Synthetic Polymeric Materials
Email: markin@calorimetry-center.ru
Russian Federation, Moscow, 117393
E. A. Tatarinova
Enikolopov Institute of Synthetic Polymeric Materials
Email: markin@calorimetry-center.ru
Russian Federation, Moscow, 117393
A. M. Muzafarov
Nesmeyanov Institute of Organoelement Compounds
Email: markin@calorimetry-center.ru
Russian Federation, Moscow, 119991