Copper(II) Perfluorinated Carboxylate Complexes with Small Aliphatic Amines as Universal Precursors for Nanomaterial Fabrication

Materials

Iwona B. Szymańska¹  Katarzyna Madajska¹  Aleksandra Butrymowicz¹  Magdalena Barwiołek¹ 

[1] Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland;

关键词: Copper(II);    ethylamine;    isopropylamine;    perfluorinated carboxylates;    EI-MS;    chemical vapor deposition;   

DOI  :  10.3390/ma14237451

来源: DOAJ

【 摘 要 】

Copper(II) carboxylate compounds with ethylamine and isopropylamine of the general formula [Cu₂(RNH₂)₂(µ-O₂CR_f)₄], where R = Et, ⁱPr, and R_f = C_nF_2n+1, n = 1–6, were characterised in the condensed and gas phases by electron impact mass spectrometry (EI MS), IR spectroscopy, and thermal analysis. A mass spectra analysis confirmed the presence of metallated species in the gas phase. Among the observed fragments, the pseudomolecular ions [Cu₂(RNH₂)₂(µ-O₂CR_f)₃]⁺ were found, which suggests the dimeric structure of the studied complexes with axially N-coordinated ethyl- or isopropylamine molecules and bridging perfluorinated carboxylates. TGA studies demonstrated that copper transfer to the gas phase occurs even under atmospheric pressure. The temperature range of the [Cu₂(RNH₂)₂(µ-O₂CR_f)₄] and other copper carriers detection, observed in variable temperature infrared spectra, depends on the type of amine. The possible mechanisms of the decomposition of the tested compounds are proposed. The copper films were produced without additional reducing agents despite using Cu(II) CVD precursors in the chemical vapor deposition experiments. The layers of the gel-like complexes were fabricated in both spin- and dip-coating experiments, resulting in copper or copper oxide materials when heated. Dinuclear copper(II) carboxylate complexes with ethyl- and isopropylamine [Cu₂(RNH₂)₂(µ-O₂CR_f)₄] can be applied for the formation of metal or metal oxide materials, also in the nanoscale, by vapour and ‘wet’ deposition methods.

【 授权许可】

Unknown