A5032351177- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Synthesis and Properties of Aromatic Compounds
- Vanadium and Halogenation Chemistry
- Crystallography and molecular interactions
- Photochromic and Fluorescence Chemistry
- Metal-Catalyzed Oxygenation Mechanisms
- Photochemistry and Electron Transfer Studies
- Magnetism in coordination complexes
- Polyoxometalates: Synthesis and Applications
- Porphyrin and Phthalocyanine Chemistry
- Metal-Organic Frameworks: Synthesis and Applications
- Fuel Cells and Related Materials
- Molecular spectroscopy and chirality
- Lanthanide and Transition Metal Complexes
- biodegradable polymer synthesis and properties
- Synthesis of Organic Compounds
- Photoreceptor and optogenetics research
- Axial and Atropisomeric Chirality Synthesis
- Carbon dioxide utilization in catalysis
- Oxidative Organic Chemistry Reactions
- Supramolecular Chemistry and Complexes
- Crystal structures of chemical compounds
- Catalytic Cross-Coupling Reactions
- Metal complexes synthesis and properties
Romanian Academy
2014-2025
Institute of Macromolecular Chemistry
2023
Friedrich Schiller University Jena
2005-2021
University of Bucharest
2015-2020
Romanian Society of Nephrology
2019
Grigore T. Popa University of Medicine and Pharmacy
2011
Carl Zeiss (Germany)
2005-2007
Two novel bidimensional coordination polymers, [Co(azbbpy)(4,4'-bipy)0.5(DMF)(NCS)2]·MeOH (1) and [Co(azbbpy)(bpe)0.5(DMF)(NCS)2]·0.25H2O (2), resulted from the assembling of cobalt(II) ions by 1,3-bis(4-pyridyl)azulene, using either 4,4'-bipyridyl or 1,2-bis(4-pyridyl)ethylene as neutral spacers. The nodes in 1 2 act single-ion magnets (SIMs).
Abstract The Schiff‐base ligand derived from salicylaldehyde and γ‐hydroxybutanoic acid hydrazide (H 2 Salhyhb) reacts with potassium metavanadate hydrogen peroxide in a water/methanol solution pH value of around two to yield the corresponding vanadium( V ) oxoperoxo complex [VO(O )HSalhyhb(H O)] ( 1 ). Complex crystallizes one molecule water as 1· H O monoclinic space group P / n . For vanadium atom pentagonal‐bipyramidal coordination geometry is observed, side‐on bonded peroxo equatorial...
A facile and feasible protocol for synthesis of functionalized reduced graphene oxide decorated with gold nanoparticles (AuNP/rGO) in mild reaction conditions has been successfully developed. Starting from graphite, the following routes were developed: (1) preparation graphite oxide; (2) (GO) a compatible polymer; (3) (final compound). The surface morphology as-prepared AuNP/rGO was investigated using scanning electron microscopy (SEM) specific area determined BET method, while structural...
Abstract The synthesis and spectroscopic characterization of a series three oxidovanadium(V) complexes with 8‐hydroxyquinoline Schiff‐base ligands derived from salicylaldehyde ω‐hydroxy‐functionalized carbohydrazides different chain lengths are reported. complex the hydrazone ligand containing shortest length was crystallographically characterized. This crystallizes in triclinic space group P $\bar {1}$ two structurally similar but independent complexes. Each vanadium atom is six‐coordinate...
High catalytic activity and selectivity has been demonstrated for the oxidation of both aliphatic aromatic amines to nitriles under benign conditions with dioxygen or air using Ru2Cl4(az-tpy)2 complex. The conversion was found be strongly influenced by alkyl chain length reactant shorter have lower conversions than those longer chains. Importantly, ruthenium terpyridine complex functionalized azulenyl moiety at 4 position central pyridine core provided a much higher reactivity catalyst...
Novel azulenyl functionalized dithienylethenes were synthesized, and their photochromic reactivity, fluorescent electrochemical properties investigated.
Four new heterometallic 3d–4f complexes have been obtained using bi- and trinuclear building blocks: 1∞[Ni(L1)Gd(NO3)3(azbbpy)]·CH3CN (1), [Zn(L1)Eu(NO3)3(azbbpy)]·H2O (2), 1∞[(CuL2)2Gd(NO3)2(dca)] 3 1∞[(NiL2)2Dy(H2O)4(oxy-bbz)]NO3·3H2O (4), [H2L1 = 1,3-propanediyl-bis(2-iminomethylene-6-methoxyphenol), H2L2 2,6-di(acetoacetyl)pyridine, azbbpy 1,3-bis(4-pyridyl)azulene, dca− dicyanamide anion, oxy-bbz the dianion of 4,4′-oxy-bis(benzoic) acid]. 1 2 represent first containing...
4′-Azulenyl-substituted terpyridines were efficiently synthesized following the Kröhnke methodology via azulenylchalcone intermediates. These azulenyl-containing showed fluorescent emission with a fluorescence quantum yield varying from 0.14, in case of parent terpyridine, to 0.64 when methyl groups are grafted on azulenyl seven-membered ring. According crystal structures and TDDFT calculations, different twisting aromatic constituents is responsible for observed behavior. The...
Azulene-containing chalcones have been synthesized via Claisen-Schmidt condensation reaction. Their chemical structure has established by spectroscopic methods where the 1H-NMR spectra suggested that title were geometrically pure and configured trans (J = 15 Hz). The influence of functional groups from azulene-containing on biological activity 2-propen-1-one unit was investigated for first time. This study presents optical fluorescent investigations, QSAR studies, 10 novel compounds. These...
Three new complexes have been obtained using C3-symmetric trinuclear as tectons; [Cu3(felden)(NCS)3(dmf)3] (1), [Cu3(felden)(mand)3]·(C2H5)2O (2), and [Cu3(felden)(dca)3(C2H5OH)]·2H2O (3) (H3felden is the Schiff base resulting from condensation of 2,4,6-triformylphloroglucinol with N,N-dimethylethylenediamine, mand− anion R-mandelic acid dca− dicyanamide anion). Compounds 1 2 are discrete species, while compound 3 a 2D coordination polymer, constructed nodes dicyanamido spacers. The...
Azo compounds, which are highly versatile molecules, have attracted a considerable attention both for their fundamental properties and practical applications, especially in photonics. The conjugated azo-aromatic systems containing 4-(R-azulen-1-yl)-2,6-dimethyl-pyridine were investigated nonlinear optical properties. These molecules embedded polymethyl methacrylate (PMMA) matrix, the obtained guest-host processed into good quality thin film by spin coating technique. dipolar moments of...
Abstract An efficient two‐step method was developed for the synthesis of 1,2‐di(azulen‐1‐yl)ethenes 15 – 17 , having double bond included in a five‐membered carbocyclic or heterocyclic ring. The involves preparation appropriate diketone precursors through Vilsmeier–Haack Friedel–Crafts reactions, followed by their McMurry cyclization. Alkenes 16 and were quantitatively converted into corresponding dehydro derivatives 24 25 respectively, oxidation with...
1,3-Bis(4-pyridyl)azulene has been employed as a hydrogen bond acceptor to construct two-component organic cocrystals.