Chemistry Journal of Moldova

Supramolecular chemistry

Author(s):

Nguyen Thi Thu Thuy, Do Hoang Giang, Pham Khac Linh, Nguyen Tien Dat


Field: Supramolecular chemistry
Type: Research paper
Issue: 2020 Volume 15, no.2
Pages: 45-53
Keywords: polysaccharides extraction, optimization, haricot vert, bioactivity.
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Graphical Abstract: Polysaccharides from the pods of haricot vert (Phaseolus vulgaris L.) were extracted using a simple heating method, by varying extracting temperature, heating time, solid-to-liquid ratio, and solvent compositions. The obtained results were processed using statistical analysis that helped to identify the optimal conditions for the polysaccharides’ extraction process. This study represents a promising production method of bioactive polysaccharides extract in the food and pharmaceutical industry.   

 


Downloads: 104

Author(s):

Aliona Vitiu


Field: Supramolecular chemistry
Type: Research paper
Issue: 2019 Volume 14, no.1
Pages: 120-127
Keywords: crystalline coordination polymer, bridging ligand, supramolecular system, π–π stacking interaction
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Abstract (PDF)
Graphical Abstract: Two new 1D coordination polymers based on octahedral Fe(II) and square-pyramidal Cu(II) complexes and N,N'-bipyridine-type ligands were synthesized by slow evaporation method. The compounds with the formula {(bpyH2)•[Fe(bpy)2(H2O)2(SO4)2]•2(H2O)}n and {[Cu(bpp)2(H2O)]•(BF4)2•dmf•0.75(H2O)}n, (where bpy= 4,4'-bipyridine and bpp= 1,3-bis(4-pyridyl)propane, dmf= N,N-dimethylformamide) were characterized by thermal analysis, FT-IR spectroscopy and single crystal X-ray diffraction method.


 


Downloads: 194

Author(s):

Ecaterina Tocana, Anatolii Siminel, Lilia Croitor


Field: Supramolecular chemistry
Type: Research paper
Issue: 2017 Volume 12, no.2
Pages: 102-108
Keywords: X-ray, 1,10-phenanthroline, supramolecular system, π–π stacking interaction, luminescence.
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Graphical Abstract: New supramolecular systems of Ni(II) and Cd(II) with 1,10-phenanthroline constructed by non-covalent interactions have been synthesized and characterized by single-crystal X-ray diffractometry. The smaller nickel(II) ion forms a cis complex with outer-sphere perchlorates, while the cadmium(II) ion forms a trans complex involving inner-sphere perchlorates. Both compoundsrevealintraligand-basedluminescentproperties.



Downloads: 81

Author(s):

Albert Ivancic


Field: Supramolecular chemistry
Type: Research paper
Issue: 2016 Volume 11, no.2
Pages: 17-25
Keywords: alginate, chitosan, antimicrobial system, ionotropic gelation, drug.
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Graphical Abstract: Present work outlines the main synthetic approaches for the preparation of antimicrobial systems based on alginate (1) and chitosan (2) polymers as well as identifies potential areas of their application. Various techniques used for preparation, applications and usefulness of these systems as carriers of antimicrobial compounds are also discussed.



Downloads: 100

Author(s):

Alexei Baerle, Olga Dimova, Irina Urumoglova, Pavel Tatarov, Larisa Zadorojnai


Field: Supramolecular chemistry
Type: Research paper
Issue: 2016 Volume 11, no.1
Pages: 97-105
Keywords: protein-polysaccharides, colloids, electrokinetic potential, phase diagram, microcapsules.
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DOI:
dx.doi.org/10.19261/cjm.2016.11(1).13

Graphical Abstract:
 Phase state and the charge of colloidal particles in the gelatine-polyuronate system were studied. A method for comparative evaluation of molecular weight of colloids by means of viscosimetric measurements and electrophoresis was developed. It is shown that the Diagram {Phase state = f (composition, pH)} contains six well-defined regions. The diagram explains and predicts the behaviour of protein-polysaccharide colloids, which are included in beverages or forms the shells of oil-containing microcapsules.




The article is Open Access by CC-BY 4.0 License

Cite this article as:
A. Baerle, O. Dimova, I. Urumoglova, P. Tatarov, L. Zadorojnai. Phase Diagram of Gelatine-Polyuronate Colloids: Its Application For Microencapsulation and not Only. Chemistry Journal of Moldova, 2016, 11(1), pp. 97-105. DOI: dx.doi.org/10.19261/cjm.2016.11(1).13

Article Source: Phase Diagram of Gelatine-Polyuronate Colloids: Its Application For Microencapsulation and not Only.

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Downloads: 54

Author(s):

Gabriela Ciobanu, Constantin Luca, Octavian Ciobanu


Field: Supramolecular chemistry
Type: Research paper
Issue: 2014 Volume 9, no.1
Pages: 132-135
Keywords: hydroxyapatite, cellulose acetate, scaffold
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DOI:
dx.doi.org/10.19261/cjm.2014.09(1).18

Graphical Abstract:
 In this study, the porous hydroxyapatite-filled cellulose acetate scaffolds were prepared via dry-wet phase inversion method by dispersing hydroxyapatite nanoparticles in the polymeric matrix. The calcined hydroxyapatite prepared by wet precipitation method has the crystal size smaller than 50 nm. The unfilled and hydroxyapatite-filled cellulose acetate scaffolds have an asymmetric structure consisting of two layers, the dense top layer (active layer) supported by the porous sub-layer (substructure). The cross-sectional SEM images revealed that hydroxyapatite nanoparticles were well dispersed in the cellulose acetate matrix.



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Author(s):

Anca-Dana Bendrea, Ana-Maria Catargiu and Mircea Grigoras


Field: Supramolecular chemistry
Type: Research paper
Issue: 2009 Volume 4, no.2
Pages: 100-104
Keywords: polymers composites, SBA-polithiophene, SBA-polyaniline.
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DOI:
dx.doi.org/10.19261/cjm.2009.04(2).03

Graphical Abstract:




Downloads: 19

Author(s):

Jalil Moubarak, Elodie Moreno, Eric Diesis and Anthony W. Coleman


Field: Supramolecular chemistry
Type: Research paper
Issue: 2009 Volume 4, no.2
Pages: 94-99
Keywords: Calix[n]arene, para-Sulphonato-calix[4]arene, Electrospray Mass Spectrometry, Binding Constants, Complex Stoichiometry, Sequential Binding.
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DOI:
dx.doi.org/10.19261/cjm.2009.04(2).04

Graphical Abstract: 
The binding of para-Sulphonato-calix[4]arene to a series of Serum Albumin Proteins has been studied using Electrospray Mass Spectrometry, each protein shows different capacities to interact with para-Sulphonato-calix[4]arene, including the number of ligands bound, the Association Constants observed, and the stoichiometries at which the onset of each binding event is observed.


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Author(s):

Oleksandr Shkurenko, Kinga Suwinska, Florent Perret, Katia Sigaud, Antoine Leydier, Said Jebors and Anthony W. Coleman


Field: Supramolecular chemistry
Type: Research paper
Issue: 2009 Volume 4, no.2
Pages: 86-93
Keywords: Calix[n]arenes, X-ray Crystallography, Structure, Mono-anionic, Diamino-Bicycloundecane, inclusion polymer.
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DOI:
dx.doi.org/10.19261/cjm.2009.04(2).05

Graphical Abstract:
 Diamino-bicycloundecane mono-deprotonates H-calix[4]arene and the solid-structure of the resulting salt has been determined by X-ray crystallography. Two different complexes are present in the structure with the Diamino-bicycloundecane cation held in the calix[4]arene cavity by CH-p interactions. In the packing there is a hydrogen-bonded polymeric chain. Both the complexes formed layered structures with differing inter-layer distances. 


Downloads: 9