Thermodynamic properties of carbosilane dendrimer of the first generation with methoxyundecylenate end groups in the temperature range 0-340 K

For the carbosilane dendrimer of the first generation with methoxyundecylen ate end groups [G-1(Und-Me)(8)], the thermodynamic properties in the 0-340 K range were studied by precision adiabatic vacuum calorimetry; specificall y, the temperature dependence of heat capacity was determined, the physical transformations of the crystal-crystal and crystal-liquid types were revea led, and the thermodynamic characteristics of the above transformations wer e estimated. Based on experimental evidence, the thermodynamic functions C( p)degrees (T), H degrees (T) - H degrees (0), S degrees (T) - S degrees (0) , and G degrees (T) - H degrees (0) were calculated in the range 0-340 K; f or the physical states of the studied dendrimer, the temperature intervals of thermodynamic stability were evaluated.