Istraživanje nastajanja azodioksidnih višeslojeva na površini zlata mikroskopijom atomskih sila

master's thesis

• Title (english): Study of formation of azodioxy multilayers on gold surface by atomic force microscopy
• Author: Lovorka-Kristina Pereković
• Mentor: Ivana Biljan (mentor)
• Committee member: Iva Juranović Cindrić (predsjednik povjerenstva)
• Committee member: Željka Soldin (član povjerenstva)
• Committee member: Željka Car (član povjerenstva)
• Committee member: Ivana Biljan (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2022-02-25, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

U ovom radu ispitana je mogućnost nastajanja azodioksidnih višeslojeva na površini zlata (111)
korištenjem polimerizacijskih svojstava aromatskih dinitrozo spojeva. Sintetiziran je
3-tiocijanatopropil-4-nitrozobenzoat koji se preko atoma sumpora iz tiocijanatne skupine može
vezati na površinu zlata te je korišten za pripravu molekularnih jednoslojeva sa slobodnim
nitrozo skupinama na međupovršini. Također je sintetizirano nekoliko aromatskih dinitrozo
derivata s različitim premosnicama između benzenskih prstenova. Azodioksidni višeslojevi
pripravljeni su uranjanjem modificiranog supstrata zlata (111), na koji je prethodno vezan 3-
tiocijanatopropil-4-nitrozobenzoat, u otopinu odgovarajućeg aromatskog dinitrozo derivata
poznate koncentracije na određeno vrijeme. Morfološke i topografske karakteristike
molekularnih slojeva aromatskih nitrozo derivata na površini zlata (111) istražene su
mikroskopijom atomskih sila (AFM). Rezultati ukazuju da se na slobodne nitrozo skupine
izložene na međupovršini jednosloja veže nekoliko podjedinica aromatskih dinitrozo derivata.

Abstract (english)

In this thesis, the possibility of the formation of azodioxide multilayers on the gold (111)
surface was investigated by using the polymerization properties of aromatic dinitroso
compounds. 3-Thiocyanatopropyl-4-nitrosobenzoate was synthesized, which can bind to the
gold surface via sulfur atom from the thiocyanate group, and was used for preparation of
molecular monolayers with free nitroso groups at the interface. Several aromatic dinitroso
derivatives with different spacers between phenyl rings were also synthesized. Azodioxide
multilayers were prepared by immersing a modified gold (111) substrate, to which 3-thiocyanatopropyl-4-nitrosobenzoate was previously adsorbed, in a solution of the
corresponding aromatic dinitroso derivative of known concentration for a defined time.
Morphological and topographical features of molecular layers of aromatic nitroso derivatives
on the gold (111) surface were studied by atomic force microscopy (AFM). The results indicate
that several subunits of aromatic dinitroso derivatives bind to free nitroso groups exposed at the
monolayer interface.

• Keywords: aromatski C-nitrozo spojevi; mikroskopija atomskih sila; polimerizacija; samoudruženi molekularni slojevi na zlatu
• Keywords (english): aromatic C-nitroso compounds; atomic force microscopy; polymerization; selfassembled molecular layers on gold
• Language: croatian
• URN:NBN: urn:nbn:hr:217:290340
• 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: 2024-02-25
• Created on: 2022-03-04 14:16:26