Institute of Chemistry
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Item type:Publication, Crystal structure and spectroscopic determination of the phase transitions in methylammonium and formamidinium bismuth iodide perovskites(Elsevier, 2024-06-24)Understanding of the structural properties of hybrid organic–inorganic perovskites (HOIPs) and their behavior is crucial for their use as photovoltaics and for the design and assembly of solar cells. As part of this work, a detailed study was conducted to further understand bismuth iodide perovskites, with a specific focus on the phase transitions of methylammonium and formamidinium analogs. A detailed analysis of the temperature-dependent IR spectra was also performed in order to analyze the structural changes that occur. The presence of five phases in the methylammonium bismuth iodide (MABiI) and four phases in formamidinium bismuth iodide (FABiI) were determined. An additional confirmation of the reported results was obtained from the differential scanning calorimetry. The ambiguities concerning the crystal structure of FABiI were resolved based on the results by X- ray powder diffraction (XRPD) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Crossroads of vibrational (infrared and Raman) spectroscopy and X-ray powder diffraction in identification and characterization of some minerals – advantages and limitations. A review(Society of Chemists and Technologists of Macedonia, 2024-05-19); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Solid-State Phase Transformation of Monohydrate and Anhydrous Form II of Sitagliptin Phosphate into a Novel Anhydrous Form IV – Solvent-Driven, Temperature-Induced and Stress Testings(Elsevier BV, 2024-02) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Coal: exploration, reserves, and utilization(Springer Science and Business Media LLC, 2024-02-12) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Raman spectroscopy as a tool for predicting the dimensionality and octahedra connectivity in lead iodide perovskites(2023-12-05)Gjorgjevikj, K., Bukleski, M., Dimitrovska-Lazova, S., Aleksovska, S.The interesting properties of the perovskite materials, especially the organic-inorganic ones are a consequence of their structural characteristics. In order to define the origin of these properties, a detailed structural characterization involving analysis with vibrational spectroscopy techniques has been undertaken. In this work, several inorganic and organic-inorganic lead iodide perovskites (RbPbI3, CsPbI3, CH3NH3PbI3, CH(NH2)2PbI3, C(NH2)3PbI3, (CH3)2NH2PbI3, (CH2)4NH2PbI3) were investigated by means of vibrational spectroscopy at room and low temperature and X-ray powder diffraction. Focusing on the Raman spectra, we followed the differences appearing in perovskites with different dimensionality. The bands that occur below 200 cm–1, their shape, relative position, intensity and shift can be related to the octahedral connectivity of the PbI6 anions, which, on the other hand, influence the dimensionality of the perovskites. Therefore, Raman spectroscopy can be used as a supporting technique for fast and reliable identification of octahedral connectivity. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Rapid and in-situ determination of epoxy equivalent weight of bisphenol-based epoxides by micro-Raman spectroscopy(Springer Science and Business Media LLC, 2023-02); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Chemistry and geology of coal: nature, composition, coking, gasification, liquefaction, production of chemicals, formation, peatification, coalification, coal types, and ranks(Springer Science and Business Media LLC, 2023-01-19) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Using the Escape Room game-based approach in chemistry teaching(Journal of Serbian Chemical Society, Serbian Chemical Society, 2023-03-25); In recent years, the Escape Room approach has been applied in teaching of various content. Aside from being enjoyable, the Escape Room activities actively involve all students in the class and promote their creative, critical and logical thinking, problem solving, communication and cooperation, as well as positive attitude towards the subject. To encourage the engagement and motivation of ninth-grade students, activities were developed regarding the topic of exothermic and endothermic reactions, through the use of Google Forms and Breakout Rooms option in MS Teams. The application of this approach helps students to master the teaching content in a more interesting way, encourages discussion and cooperation among students. 244 9th grade students from five primary schools participated in the research. Apart from encouraging engagement and motivation among students, one of the objectives of the research was to examine their opinions regarding the implemented Escape Room activities. For this purpose, the motivation of students towards Science Learning (SMTSL) and Activity Perception Questionnaire (APQ-ER) instruments were implemented. The research results, positive atmosphere during the classes, and high students’ satisfaction after completing the activities indicate numerous benefits of the implementation of the Escape Room approach in chemistry teaching.