Chalcogenated (S)-(−)-nicotine derivatives as chiral linkers for 1D coordination polymers

Malczewska-Jaskóła, Karolina; Jankowski, Wojciech; Warżajtis, Beata; Jasiewicz, Beata; Hoffmann, Marcin; Rychłewska, Urszula

doi:10.1016/j.poly.2015.08.027

Cited by 9 publications

(4 citation statements)

References 45 publications

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“…have a great potential to improve different diseases [14]. The biological evaluation of hydrophilic crystalline complexes, in general, are much more efficient than that of the constituent mixtures as plants [15].…”

Section: Ofmentioning

confidence: 99%

Rheology of Copper-Kappa-Carrageenan/Amberlite Composite

Shah¹,

Salman²

2023

Preprint

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Carrageenan (car-), used in the pharmaceutical as well as food industry, is marine sulfated polysaccharides. The carrageenan blends (CB) of kappa (κ-), iota (ι-), and lambda (λ-) of 50/50 weight by weight are multipurpose and biocompatible hydrophilic polymers. They were subjected to adsorption of copper (Cu2+) ions. The aim of the study was to conduct extensive rheological and mechanical studies rendering them suitable for biological purposes. The rheology was conducted at various temperatures using a frequency curve, frequency sweep, loss modulus, and storage modulus analysis. Models of rheology like Ostwald, Bingham, and Modified Bingham models were utilized. The rheological results demonstrated non-Newtonian/pseudo-plastic behavior at various temperatures. The models of rheology demonstrated good flow properties and rheological performance of these materials. These materials could be exploited for their application in pharmaceuticals, food, and cosmetics. Thus, our study reflects that these CB can be safely exploited in the healthcare, pharmaceutical, and food industry. However, further studies should be conducted to evaluate their effectiveness in clinical studies.

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Section: Ofmentioning

confidence: 99%

Rheology of Copper-Kappa-Carrageenan/Amberlite Composite

Shah¹,

Salman²

2023

Preprint

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“…The incorporation of several donor atoms, both soft and hard , in the structure of a proligand represents a challenge as different types of coordination patterns to the metal cations can be accomplished. A series of biologically active selenium-containing compounds have been used to obtain complexes with metal cations known for their importance in biology (e.g., selenonicotine derivatives were used as linkers to build 1D coordination polymers [ 10 ]) and material science (e.g., dichlorobis [1,3-dimethyl-2(3 H )-imidazoleselone]zinc(II) was used as a ZnSe precursor [ 11 ]).…”

Section: Introductionmentioning

confidence: 99%

Metal Complexes Containing Homoleptic Diorganoselenium(II) Ligands: Synthesis, Characterization and Investigation of Optical Properties

Dumitraș,

Gal,

Silvestru

et al. 2024

Molecules

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[(Z)-2′-{2-C6H5-(4H)-oxazol-5-one}CHC6H4]2Se (5, L1) and [(Z)-4′-{2-C6H5-(4H)-oxazol-5-one}CHC6H4]2Se (6, L2) were prepared, structurally characterized and used as ligands to obtain new metal complexes of types [MX(Ln)] [L1: M = Ag, X = OTf (7); M = Au, X = Cl (13); L2: M = Ag, X = OTf (8); M = Au, X = Cl (14)], [(MX)2(Ln)] [M = Ag, X = OTf, L1 (9); L2 (10)], [ZnCl2(Ln)] [L1 (15); L2 (16)] and [Ag(Ln)][PF6] [L1 (11); L2 (12)]. The silver complexes 7 and 8 were ionic species (1:1 electrolytes) in a MeCN solution, while in the solid state, the triflate fragments were bonded to the silver cations. Similarly, the 2:1 complexes 9 and 10 were found to behave as 1:2 electrolytes in a MeCN solution, but single-crystal X-ray diffraction demonstrated that compound 9 showed the formation of a dimer in the solid state: a tetranuclear [Ag(OTf)]4 built through bridging triflate ligands was coordinated by two bridging organoselenium ligands through the nitrogen from the oxazolone ring and the selenium atoms in a 1κN:2κSe fashion. Supramolecular architectures supported by intermolecular C−H∙∙∙π, C−H∙∙∙O, Cl∙∙∙H and F∙∙∙H interactions were observed in compounds 4, 5 and 9. The compounds exhibited similar photophysical properties, with a bathochromic shift in the UV-Vis spectra caused by the position of the oxazolone ring on the phenyl ring attached to the selenium atoms.

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“…Metal chelates are widely known to have great potential to improve different diseases [14]. The biological evaluation of hydrophilic crystalline complexes, in general, is much more efficient than that of constituent mixtures as plants [15].…”

Section: Introductionmentioning

confidence: 99%

Rheology of copper-kappa-carrageenan/amberlite composite

Shah

Salman

2023

Preprint

View full text Add to dashboard Cite

Carrageenan (car-), used in the pharmaceutical as well as food industry, is a marine sulfated polysaccharide. Car-, used in the pharmaceutical as well as food industry, is a marine sulfated polysaccharide. The carrageenan blends (CB) of kappa (κ-), iota (ι-), and lambda (λ-) of 50/50 weight by weight are multipurpose and biocompatible hydrophilic polymers. They have been subjected to the adsorption of copper (Cu2+) ions. The aim of the study was to conduct extensive rheological and mechanical studies rendering them suitable for biological purposes. The rheology was conducted at various temperatures using a frequency curve, frequency sweep, loss modulus, and storage modulus analysis. Models of rheology like Ostwald, Bingham, and Modified Bingham models were utilized. The rheological results demonstrated non-Newtonian/pseudo-plastic behavior at various temperatures. The models of rheology demonstrated good flow properties and rheological performance of these materials. These materials could be exploited for their application in pharmaceuticals, food, and cosmetics. Thus, our study reflects that these CB can be safely exploited in the healthcare, pharmaceutical, and food industry. However, further studies should be conducted to evaluate their effectiveness in clinical studies.

show abstract

Chalcogenated (S)-(−)-nicotine derivatives as chiral linkers for 1D coordination polymers

Cited by 9 publications

References 45 publications

Rheology of Copper-Kappa-Carrageenan/Amberlite Composite

Rheology of Copper-Kappa-Carrageenan/Amberlite Composite

Metal Complexes Containing Homoleptic Diorganoselenium(II) Ligands: Synthesis, Characterization and Investigation of Optical Properties

Rheology of copper-kappa-carrageenan/amberlite composite

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