Primjena termičke analize i Ramanove spektroskopije u istraživanju fleksibilnosti kristala koordinacijskih polimera kadmijevih(II) halogenida s halogeniranim piridinima

master's thesis

• Title (english): Application of thermal analysis and Raman microscopy in the study of the flexibility of coordination polymers of cadmium(II) halides with halogen substituted pyridines
• Author: Antonia Vardijan
• Mentor: Željka Soldin (mentor)
• Committee member: Željka Soldin (predsjednik povjerenstva)
• Committee member: Adriana Kenđel (član povjerenstva)
• Committee member: Đani Škalamera (član povjerenstva)
• Committee member: Biserka Prugovečki (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2022-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

Kristali se najčešće opisuju kao tvrdi materijali koji se lome uslijed djelovanja mehaničke sile.
Fleksibilnost kao odgovor na primjenu vanjske mehaničke sile je tek u novije vrijeme opisana na
kristalima metalnih koordinacijskih polimera. Da bi se ispitale mogućnosti Ramanove mikroskopije
i metoda termičke analize u istraživanju plastičnog odgovora kristala sintetizirani su koordinacijski
polimeri kadmijevih(II) halogenida s 3-klorpiridinom (3-Clpy) i 3-brompiridinom (3-Brpy).
Metodom tekućinske difuzije priređeni su kristali odgovarajuće igličaste morfologije spojeva
[CdBr2(3-Clpy)2]n, [CdI2(3-Clpy)2]n, [CdI2(3-Brpy)2]n. Za potvrdu fazne čistoće
pripravljenih kristala korištena je difrakcija rendgenskog zračenja u polikristalnom uzorku. Utjecaj
jačine međumolekulskih interakcija na plastičnu savitljivost istražen je Ramanovom
mikroskopijom i koreliran s rezultatima dobivenim metodama termičke analize.

Abstract (english)

Crystals are often described as brittle materials which can be easily broke under application of
mechanical force. Flexibility as response to applied mechanical force was recently discovered for
the crystals of the metal coordination polymers. In order to examine possibilities of the thermal
analysis methods and Raman microscopy in the study of the crystals with plastic response, we
prepared coordination polymers of the cadmium (II) halides with 3-chloropyridine (3-Clpy) and 3-
bromopyridine (3-Brpy). The crystals of required morphology (needlelike) of the compounds
[CdBr2(3-Clpy)2]n, [CdI2(3-Clpy)2]n, [CdI2(3-Brpy)2]n were prepared by a liquid diffusion
method. Phase purity of the crystals was proved by powder X-ray diffraction. The effect of the
intermolecular interactions strength on the typical plasticity of the crystals was examined by Raman
spectroscopy are correlated with results obtained by means of thermal analysis methods (TGA, DSC
and Hot stage microscopy).

• Keywords: koordinacijski polimeri kadmija(II); 3-klorpiridin; 3-brompiridin; fleksibilni kristali; Ramanova spektroskopija; termička analiza
• Keywords (english): cadmium(II) coordination polymers; 3-chloropyridine; 3-bromopyridine; flexible crystals; Raman spectroscopy; thermal analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:217:261483
• Project: Number: IP-2019-04-1242; Title: Od oblika do funkcije: Fleksibilni kristalni materijali s kontroliranim mehaničkim odzivom; Title: From form to function: Mechanically flexible crystalline materials with controllable responses; Acronym: FlexibleCrystals; Leader: Marijana Đaković; Jurisdiction: Croatia; Funder: HRZZ; Funding stream: IP
• Study programme: Title: Graduate university studies in chemistry; specializations in: Research programme; Course: Research programme; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2024-09-30
• Created on: 2022-10-25 12:23:18