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Smirnova NN, Markin AV, Sologubov SS, Milenin SA, Tatarinova EA, Muzafarov AM. Thermodynamic Properties of a Fourth-Generation Carbosilane Dendrimer with Terminal Trimethylsilylsiloxane Groups. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422080210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Sologubov SS, Markin AV, Smirnova NN, Chamkina ES, Krasnova IY, Milenin SA, Serenko OA, Shifrina ZB, Muzafarov AM. Thermodynamic Properties of the First-Generation Hybrid Dendrimer with "Carbosilane Core/Phenylene Shell" Structure. ENTROPY (BASEL, SWITZERLAND) 2021; 23:1557. [PMID: 34945863 PMCID: PMC8700160 DOI: 10.3390/e23121557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/21/2021] [Accepted: 11/22/2021] [Indexed: 11/23/2022]
Abstract
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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Affiliation(s)
- Semen S. Sologubov
- Chemistry Department, National Research Lobachevsky State University of Nizhny Novgorod, 23/5 Gagarin Av., 603950 Nizhny Novgorod, Russia; (S.S.S.); (N.N.S.)
| | - Alexey V. Markin
- Chemistry Department, National Research Lobachevsky State University of Nizhny Novgorod, 23/5 Gagarin Av., 603950 Nizhny Novgorod, Russia; (S.S.S.); (N.N.S.)
| | - Natalia N. Smirnova
- Chemistry Department, National Research Lobachevsky State University of Nizhny Novgorod, 23/5 Gagarin Av., 603950 Nizhny Novgorod, Russia; (S.S.S.); (N.N.S.)
| | - Elena S. Chamkina
- Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilov St., 119334 Moscow, Russia; (E.S.C.); (I.Y.K.); (O.A.S.); (Z.B.S.); (A.M.M.)
| | - Irina Yu. Krasnova
- Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilov St., 119334 Moscow, Russia; (E.S.C.); (I.Y.K.); (O.A.S.); (Z.B.S.); (A.M.M.)
| | - Sergey A. Milenin
- Enikolopov Institute of Synthetic Polymeric Materials of Russian Academy of Sciences, 70 Profsoyuznaya St., 117393 Moscow, Russia;
| | - Olga A. Serenko
- Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilov St., 119334 Moscow, Russia; (E.S.C.); (I.Y.K.); (O.A.S.); (Z.B.S.); (A.M.M.)
| | - Zinaida B. Shifrina
- Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilov St., 119334 Moscow, Russia; (E.S.C.); (I.Y.K.); (O.A.S.); (Z.B.S.); (A.M.M.)
| | - Aziz M. Muzafarov
- Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilov St., 119334 Moscow, Russia; (E.S.C.); (I.Y.K.); (O.A.S.); (Z.B.S.); (A.M.M.)
- Enikolopov Institute of Synthetic Polymeric Materials of Russian Academy of Sciences, 70 Profsoyuznaya St., 117393 Moscow, Russia;
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Markin AV, Sarmini YA, Sologubov SS, Smirnova NN, Boldyrev KL, Tatarinova EA, Meshkov IB, Muzafarov AM. Thermodynamic Properties of a First-Generation Siloxane Dendrimer with Terminal Trimethylsilyl Groups. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s0036024420020260] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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