Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Kryształy : od mineralogii do rentgenowskiej analizy strukturalnej

Kozioł Anna E.

Wiadomości Chemiczne

2024

[Z] 78, 9-10

1321--1342

This work is an attempt to present the history of structural research at the new university, which was established after the war in 1944. The university was created from scratch ‒ based on random buildings, by people with different experience and mostly displaced from their hometowns. At the Faculty of Natural Sciences of the Maria Curie-Skłodowska University in the years 1945‒1951, crystallography was part of geological and mineralogical research. Students of the Faculty of Natural Sciences and Pharmacy had a "crystallography" section among the subjects they studied. After the reorganization of the university structure, the Department and next the Laboratory of Crystallography became part of the Faculty of Mathematics, Physics and Chemistry. Crystallography was taught only to chemistry students, and the subject of research was phase transformations of two-component systems. It was the crystal chemistry of solid phases, studied mainly by thermal and microscopic methods. Equipping the laboratory with an X-ray generator and cameras-goniometers for photographic registration of diffraction patterns, and later for counter collection on a powder diffractometer, enabled the use of the applied X-ray crystallography. Phase transformations of zeolites, polymer structures (degree of crystallinity) and porous materials were investigated. The use of the SAXS method made it possible to extend the research to nano- and microcrystalline phases. And above all, equipping the laboratory with single-crystal X-ray diffractometers makes it possible to study what is basic and most important in chemistry, i.e. the structure of newly synthesized compounds. Analysis of the stereochemistry of molecules, including the determination of absolute configurations, allows the correlation of physicochemical, spectroscopic and biological properties with the structure of compounds. Such research is currently carried out by crystallographers from the Faculty of Chemistry of UMCS in cooperation with, among others, medical universities.