Sinteza i karakterizacija azo-premoštenih kovalentnih organskih polimera sa središnjom triazinskom jedinicom

master's thesis

• Title (english): Synthesis and characterization of azo-bridged covalent organic polymers with triazine central unit
• Author: Miro Sambolec
• Mentor: Ivana Biljan (mentor)
• Committee member: Ivana Biljan (predsjednik povjerenstva)
• Committee member: Snežana Miljanić (član povjerenstva)
• Committee member: Jana Pisk (član povjerenstva)
• Committee member: Vesna Petrović Peroković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2021-09-24, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

U okviru ovog diplomskog rada provedena je sinteza i karakterizacija 2,4,6-tris(4-nitrofenil)-
1,3,5-triazina i azo-premoštenih kovalentnih organskih polimera sa središnjom triazinskom
jedinicom. Azo kovalentni organski polimeri priređeni su reakcijom navedenog trinitro
derivata triazina i različitih diamino spojeva te melamina u bazičnom mediju. U svrhu
strukturne i termičke karakterizacije korištene su različite tehnike poput IR spektroskopije,
difrakcije rendgenskog zračenja na polikristalnom uzorku, termogravimetrijska analiza u
sprezi s IR spektroskopijom (TG-IR) te spektroskopija NMR u čvrstom stanju. Usporedba IR
spektara i difraktograma polikristalnih uzoraka polaznih spojeva i izoliranih produkata, te
rezultati spektroskopije NMR u čvrstom stanju ukazuju na nastanak aromatskih azo
kovalentnih organskih polimera amorfne građe. Rezultati TG-IR analize pokazuju visoku
termičku stabilnost priređenih aromatskih azo kovalentnih organskih polimera. Također,
identificirani su plinoviti produkti koji nastaju prilikom termičke razgradnje azo polimera.

Abstract (english)

In this diploma thesis synthesis and characterization of 2,4,6-tris(4-nitrophenyl)-1,3,5-triazine
and azo-bridged covalent organic polymers with triazine central unit was performed. Azo
covalent organic polymers were prepared by reaction of the specified trinitro triazine
derivative and various aromatic diamino compounds and melamine in basic medium. For the
purpose of structural and thermal characterization, various techniques such as IR
spectroscopy, X-ray powder diffraction, thermogravimetric analysis hyphenated with IR
spectroscopy (TG-IR) and solid state NMR spectroscopy were used. Comparison of IR
spectra and diffractograms of starting compounds and isolated products as well as results of
solid state NMR spectroscopy indicate the formation of amorphous aromatic azo covalent
organic polymers. Results of TG-IR analysis show high termal stability of the prepared
polymers. Gaseous products resulting from thermal decomposition of azo polymers have also
been identified.

• Keywords: aromatski azo spojevi; kovalentni organski polimeri; 1; 3; 5-triazin
• Keywords (english): aromatic azo compounds; covalent organic polymers; 1; 3; 5-triazine
• Language: croatian
• URN:NBN: urn:nbn:hr:217:481495
• Project: Number: IP-2020-02-4467; Title: Od aromatskih spojeva s dušikom do novih funkcionalnih organskih materijala; Title: From nitrogen-containing aromatic compounds to new functional organic-based materials; Acronym: FunMaterials; Leader: Ivana Biljan; 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: Open access; Embargo expiration date: 2023-09-24
• Created on: 2021-10-18 13:05:00