Attestation committee
Accreditation committee
Expert committee
Dispositions, instructions
Normative acts
Scientific councils
Scientific advisers
Doctoral students
Postdoctoral students
CNAA logo

 română | русский | english

CNAA / Theses / 2021 / June /

Sinteza și caracterizarea polimerilor coordinativi ai Zn(II) și Cd(II) în baza liganzilor punte azinici și azometinicii

Author: Lozovan Vasile
Degree:doctor of chemistry
Speciality: 02.00.01 - Inorganic chemistry
Scientific advisers: Marina Fonari
doctor, associate professor (docent), Institute of Applied Physics of the
Eduard Coropceanu
doctor, professor, Institute of Chemistry of the ASM
Institution: Institute of Chemistry of the ASM


The thesis was presented on the 18 June, 2021
Approved by NCAA on the 22 December, 2021


Adobe PDF document3.46 Mb / in romanian
Adobe PDF document3.52 Mb / in english


CZU 544.23/.25.057:546.4(043.2)

Adobe PDF document 14.31 Mb / in romanian
190 pages


Thesis structure: The thesis was conducted at the Institute of Chemistry, in the Coordination Chemistry laboratory. It is written in Romanian and consists of introduction, 4 chapters, general conclusions and recommendations, bibliography of 264 titles, 126 pages of basic text, 103 figures and 4 tables. The obtained results were published in 27 scientific papers, including: a patent application, 6 articles in peer-reviewed journals listed in the ISI and SCOPUS database and 20 abstracts presented and published at National and International Conferences. Keywords: synthesis, coordination polymers, azine and azomethine ligands, crystal structure, spectroscopic characterization, photoluminescence. The purpose of this thesis is synthesis and characterization of coordination polymers based on Zn(II)/Cd(II) ions and azine/azomethine bridging ligands of N,N'-donor type and additional various inorganic and organic ligands, study of photoluminescence and sorption properties. Research objectives: synthesis of coordination polymers based on Zn(II)/Cd(II) ions using the technique of mixed coligands including azine and azomethine bridging ligands at type N,N'-donors and various inorganic or organic anionic ligands; studying the crystal structure and elucidation of the role of the anionic ligand and the solvent in the extension and modeling of the polymeric structure; functionalization of the synthesized compounds by elimination or substitution of the guest molecules; investigation of thermal and chemical stability; investigation of structure-property relationship, especially in case of photoluminescence and sorption properties. Scientific novelty and originality: starting from inorganic salts of zinc(II) and cadmium(II) and continuing with the substitution of the inorganic anion with organic anions, 42 coordination compounds were obtained based on azine and azomethine bridge ligands, of which 39 reveal 1D, 2D and 3D-dimensional polymeric structure. The solved scientific problem consists in identifying materials with porous structure, capable absorbing small molecules and having photoluminescent properties. The theoretical significance consists in elucidating the way of self-assembly of coordination polymers and establishing the role of anionic ligand and solvent in the extension and modeling of coordination polymers. The structure-property correlation in the synthesized compounds and the possibilities of adjusting the pore size depending on the used ligands have been also elucidated. The applicative value of the thesis consists in the extension of the range of substances with porous structure based on coordination polymers of cadmium(II) and zinc(II) with photoluminescent properties and capacity of sorption and exchange of small molecules. Implementation of scientific results. The scientific results were partially used in the instructive-educational process carried out at UST. The photoluminescent activity and the absorption and exchange capacity of the guest molecules suggest the possibility of using coordination compounds with porous structure as sensors for the detection of small molecules.