Article
Chemistry, Multidisciplinary
Jia-Yuan Zhao, Ning Ren, Ying-Ying Zhang, Kun Tang, Jian-Jun Zhang
Summary: This article presents a series of newly synthesized complexes and their characterization studies. Single crystal data revealed that these complexes are binuclear and possess different crystal structures. The thermal decomposition mechanism of these complexes was investigated using TG/DSC-FTIR technology.
FRONTIERS IN CHEMISTRY
(2021)
Article
Thermodynamics
Halina Gluchowska, Renata Lyszczek, Anna Jusza, Ryszard Piramidowicz
Summary: The microwave-assisted solvothermal method was used to prepare lanthanide (III) complexes with N,N'-dimethylformamide (DMF), which contain DMF and water molecules in their structures. The complexes exhibit varying thermal stability, with solvent molecules being removed in a more complex manner, especially in heavy lanthanide complexes. Their thermal stability is higher in a nitrogen atmosphere. The thermal decomposition of the complexes was investigated through TG-FTIR methods, showing the evolution of volatile products such as DMF, H2O, CO2, CO, and CH4 during heating.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Review
Pharmacology & Pharmacy
Marek Wesolowski, Edyta Leyk
Summary: Using multiple measurement techniques ensures reliable interpretation of sample changes during heating, eliminating uncertainty and improving data interpretation. This paper briefly characterizes thermal analysis techniques coupled with spectroscopic or chromatographic techniques. Various design solutions for coupled thermogravimetry (TG) with infrared spectroscopy (FTIR), mass spectrometry (MS), and gas chromatography/mass spectrometry (GC/MS) systems are discussed. The importance of coupled techniques in pharmaceutical technology is highlighted, as they provide insights into the behavior and degradation of medicinal substances during heating, allowing determination of decomposition mechanisms and prediction of shelf life and storage conditions. In addition, design solutions for interpreting differential scanning calorimetry (DSC) curves using observation or simultaneous recording of FTIR spectra and X-ray diffractograms (XRD) are characterized, addressing the inherent non-specificity of DSC.
Article
Thermodynamics
Dan-Dan Du, Xin-Xin Wang, Yuan-Yuan Ma, Ning Ren, Jian-Jun Zhang
Summary: The reaction between 2,4-difluorobenzoic acid and 5,5'-dimethyl-2,2'-bipyridine with Ln(NO3)(3)center dot 6H(2)O via slow evaporation produced a series of new binuclear lanthanide complexes, which were characterized by various techniques. The complexes showed two structural types, and thermal decomposition as well as the luminescent property of one complex containing Eu(III) were studied in detail.
THERMOCHIMICA ACTA
(2021)
Article
Chemistry, Inorganic & Nuclear
Dan-Dan Du, Ning Ren, Jian-Jun Zhang
Summary: A family of lanthanide-based self-assembling complexes constructed from 2-fluorobenzoic acid and 5,5 '-dimethyl-2,2 '-bipyridine have been successfully fabricated via conventional synthesis. The complexes exhibit structural differences and distinct fluorescence properties, showing high thermal stability up to 450 K.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Polymer Science
Dmytro Vlasyuk, Renata Lyszczek
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)
Article
Thermodynamics
Gessiane F. Germano, Augusto L. Souto, Wamberto A. M. De Almeida, Fatima D. Freire, Dayanne L. Porto, Ana P. B. Gomes, Leandro S. Ferreira, Fernando H. A. Nogueira, Rita C. O. Sebastiao, Raquel B. Giordani, Cicero F. S. Aragao
Summary: The study characterized Monocrotaline using thermal and non-thermal techniques, revealing structural changes and decomposition processes at specific temperatures. The kinetic parameters indicated a significant contribution of geometric contraction models to the degradation process, in accordance with the experimental results.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
Dan-Dan Du, Ning Ren, Jian-Jun Zhang
Summary: Two novel isostructural lanthanide complexes were synthesized using 2-fluorobenzoic acid and 5,5'-dimethy-2,2'-bipyridine, characterized by IR, elemental analysis, and single-crystal X-ray diffraction, showing specific crystal structure and thermal behavior.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Energy & Fuels
Xiankun Huang, Hongchao Yin, Bin Zhang, Ning Mei, Lin Mu
Summary: The pyrolysis characteristics of de-alkaline lignin were studied using TG/DSC-FTIR and TG-MS. The results showed that the pyrolysis of lignin proceeded in three stages and the temperature increased with the heating rate. The main pyrolysis products were H-2, CH4, CO, and CO2. The activation energy and reaction mechanisms were determined through kinetic analysis.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Engineering, Environmental
Jingjing Li, Binlin Dou, Hua Zhang, Hao Zhang, Haisheng Chen, Yujie Xu
Summary: The pyrolysis and combustion processes of camphor biomass waste were studied using DSC/TGA-DTG/GC-MS/FTIR, with non-isothermal kinetics investigated under different heating rates. The results indicated different phases of mass loss, accompanied by exothermic and/or endothermic reactions.Activation energies for main mass losses in the second phase were determined to be 39.98-56.25 and 109.26-135.84 kJ/mol, respectively.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Takuma Nakai, Kaori Shima, Sunao Shoji, Koji Fushimi, Yasuchika Hasegawa, Yuichi Kitagawa
Summary: A novel design strategy using dinuclear lanthanide (Ln(III)) complexes was demonstrated for the formation of stacked organic fluorophores and excimers. The rigid aggregation structures of the ligands around Ln(III) resulted in high thermal stability and excimer-type green emission. The change in Ln(III) ion promoted effective shifts of excimer emissions and temperature-sensitive ratiometric emission composed of p-p* and 4f-4f transitions.
FRONTIERS IN CHEMISTRY
(2023)
Article
Medicine, Legal
Abhijitsinh Parmar, Dixit Patel, Parvathy Hari, Rajesh Babu, Prasenjit Maity
Summary: The efficiency of using small, non-lanthanide and readily available molecules as luminescent markers for gunshot residue (GSR) analysis was tested. The study evaluated the ease of visualizing GSR location, collecting GSR samples, and identifying them through various characterization techniques, as well as the cost-effectiveness of using these markers compared to lanthanide materials.
FORENSIC SCIENCE INTERNATIONAL
(2022)
Article
Energy & Fuels
Marwan A. Mahmood, Selim Ceylan
Summary: This study conducted a detailed evaluation of kinetic parameters, reaction mechanisms, and product formation during pyrolysis of hazelnut shells, revealing a multistage reaction mechanism for hazelnut shell pyrolysis.
BIOENERGY RESEARCH
(2022)
Article
Chemistry, Analytical
Yang Wang, Shiliang Yang, Guirong Bao, Hua Wang
Summary: This study comprehensively investigated the pyrolysis process of nettle straw by analyzing its multi-component kinetics modeling, kinetics and thermodynamic parameters, pyrolysis performance, reaction mechanisms, gas emissions, correlation and statistical analysis, as well as feasibility for industrial application. The pyrolysis reaction mechanisms were best described by diffusional and order-based models, with specific functions for different components. The gas emissions during nettle straw pyrolysis followed a certain order, and the optimal learning rate and artificial neural network (ANN) model structure were determined.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Multidisciplinary
Ruyi Zhang, Liangliang Zhu, Bingbing Yue
Summary: Lanthanide metal-organic frameworks (Ln-MOFs) are important components of luminescent MOFs, possessing characteristics such as good porosity, topological diversity, high surface area, and highly adjustable structure. Ln-MOFs have significant applications in chemical and biological sensors, optical information devices, and catalysis. However, there is a lack of systematic reviews on the various applications of Ln-MOFs. This paper summarizes the latest progress in Ln-MOFs applications, discusses the design mechanism, and provides prospects for potential issues in current research.
CHINESE CHEMICAL LETTERS
(2023)
