TG-DSC and TG-FTIR Studies of Annelated Triazinylacetic Acid Ethyl Esters-Potential Anticancer Agents

Article Biochemistry & Molecular Biology

Revisiting the Synthesis of Functionally Substituted 1,4-Dihydrobenzo [e][1,2,4]triazines

Margarita A. Epishina et al.

Summary: A series of novel 1,4-dihydrobenzo[1,2,4][e]triazines with high thermal stability were synthesized as potential components of functional organic materials.

MOLECULES (2022)

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Article Biochemistry & Molecular Biology

Wide Nematogenic Azomethine/Ester Liquid Crystals Based on New Biphenyl Derivatives: Mesomorphic and Computational Studies

Fowzia S. Alamro et al.

Summary: This study investigates the thermal stability and mesomorphic behavior of a new biphenyl azomethine liquid crystal homologues series. The results show that the examined homologues possess high thermal stability and broad nematogenic temperature ranges. The computational studies suggest that as the chain length increased, the polarizability of the series increased, while the biphenyl moiety had an essential impact on the stability of the possible geometries and their thermal as well as physical parameters.

MOLECULES (2022)

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Article Energy & Fuels

Experimental and numerical analysis of a phase change material-based shell-and-tube heat exchanger for cold thermal energy storage

Andrea Fragnito et al.

Journal of Energy Storage (2022)

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Article Thermodynamics

Multi-objective optimization of a phase change material-based shell-and-tube heat exchanger for cold thermal energy storage: experiments and numerical modeling

Nicola Bianco et al.

Summary: Latent heat thermal storage based on phase change material (PCM) in shell-and-tube heat exchangers can reduce power consumption of air conditioning systems. By optimizing the charging/discharging time of PCM and the operating conditions of the chiller, better performance can be achieved. Experimental validation shows that the optimal solution leads to a reduction in the inlet temperature by 1.25℃ and a maximum utilization of PCM by 40% of the initial amount. Further optimization results in a shell diameter reduction of 12 cm to exploit 72% of the PCM potential.

APPLIED THERMAL ENGINEERING (2022)

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Article Chemistry, Medicinal

Application of Thermal Analysis to Evaluate Pharmaceutical Preparations Containing Theophylline

Pawel Ramos

Summary: The proposed use of TGA combined with c-DTA for evaluating the composition of pharmaceutical preparations is shown to be an applicable screening method. These two thermal techniques complement each other to obtain reliable results and have clear advantages in identifying the components of pharmaceutical preparations.

PHARMACEUTICALS (2022)

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Article Polymer Science

Effect of Different Synthesis Approaches on Structural and Thermal Properties of Lanthanide(III) Metal-Organic Frameworks Based on the 1H-Pyrazole-3,5-Dicarboxylate Linker

Dmytro Vlasyuk et al.

Summary: The impact of different synthetic procedures on the structure and thermal properties of coordination polymers of 1H-pyrazole-3,5-dicarboxylic acid with lanthanide ions was investigated. The complexes exhibited high yields of reactions and crystallinity. The Eu(III), Tb(III), and Er(III) coordination polymers prepared under different conditions were found to be isomorphous, while only the neodymium(III) compounds had a different crystal structure. The thermal stability of the produced complexes was correlated with the synthesis conditions, with those prepared under hydrothermal conditions showing the highest stability.

JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS (2021)

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Article Chemistry, Analytical

Pyrolysis and oxidative decomposition mechanism of trifluoromethylated fused triazinones

Marta Worzakowska et al.

Summary: The pyrolysis and oxidative decomposition processes of a novel class of trifluoromethylated fused triazinones were studied using Simultaneous thermal analysis (STA) coupled online with Fourier transform infrared spectroscopy (FTIR) and Quadrupole mass spectrometry (QMS). It was found that these processes involved simultaneous, radical processes in both helium and air atmospheres, leading to the formation of various volatile products through bond cleavage and radical intermediate reactions. Additionally, the thermal properties and purity of trifluoromethylated compounds were highlighted for potential pharmaceutical applications.

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS (2021)

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Article Biochemistry & Molecular Biology