Metal cholate hydrogels: versatile supramolecular systems for nanoparticle embedded soft hybrid materials

Chakrabarty, Arkajyoti; Maitra, Uday; Das, Anjali Devi

doi:10.1039/c2jm34016j

Cited by 90 publications

(75 citation statements)

References 55 publications

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“…We have recently developed hydrogels from a variety of bile salts of various metal ions, and exploited the unique properties of each metal ion –. Several metal nanoparticles were prepared at room temperature, and among them Pd nanoparticles were used as a catalyst for C−C coupling reactions . Lanthanide‐derived gels, especially with Tb III and Eu III , have been used as sensors,– and as photoluminescent materials .…”

Section: Figurementioning

confidence: 79%

A Stimuli‐Responsive Metallohydrogel Exhibiting Cyclohexane‐Like Hydrophobicity

Laishram

Maitra

2017

Chemistry An Asian Journal

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Silver(I) forms a hydrogel in the presence of cholate with unusual properties, which are not observed with other cations. Polarity-sensitive probes have shown that the spherical aggregates observed in the gel have 'pockets' with hydrophobicity comparable to that of degassed cyclohexane. The gel exhibited thermo- and mechanoresponsive properties. Color tunability from blue to cyan and green was observed with prodan. The two sol phases of the gel formed by applying stress and temperature showed very different properties.

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Section: Figurementioning

confidence: 79%

A Stimuli‐Responsive Metallohydrogel Exhibiting Cyclohexane‐Like Hydrophobicity

Laishram

Maitra

2017

Chemistry An Asian Journal

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“…1, a self-standing cross-linked hydrogel was formed by directly mixing the stock solution of cholate and metal ions (Li + , Ni 2+ , Mn 2+ ), in which Ni 2+ and Mn 2+ can be exploited to drive the metal-cholate supramolecular hydrogel with a self-assembled one-dimensional structure [19,20]. The process is illustrated in Fig.…”

Section: Synthesis and Structural Analysismentioning

confidence: 99%

“…For the time being, some groups have reported the formation of novel metal-cholate supramolecular hydrogels [19][20][21][22]. And, it has been demonstrated that these kinds of hydrogel own a unique hierarchical structure which can be used as templates for the synthesis of inorganic materials [23,24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of high-voltage spinel LiNi0.5Mn1.5O4 material for lithium-ion batteries by a metal-cholate supramolecular hydrogel as precursor

Lin

Chen

et al. 2015

J Solid State Electrochem

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High-voltage cathode material LiNi 0.5 Mn 1.5 O 4 has been first synthesized by a novel metal-cholated supramolecular hydrogel as precursor. The structural analysis was investigated by X-ray powder diffraction, scanning electronic microscope, and Fourier transform infrared spectroscopy. The results indicated that the as-products possessed well constructed spinel structure and high crystallinity and pure phase through adding optimal amount of cholic acid. The electrochemical properties were also investigated, and its results showed that the LiNi 0.5 Mn 1.5 O 4 material exhibited enhanced rate capacity and cycling properties as electrode materials in lithium cells mainly due to the improved crystallinity and higher pure phase. In a word, this new approach provides an alternative and promising route for the fabrication of cathode materials with perfect octahedron structure and excellent electrochemical properties using metal-driven hydrogels as template.

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“…Of notable consideration, metal-cholate hybrid hydrogels has been the subject of recent research efforts as they hold enormous potential in various applications from sensing to medical implants. [65][66][67] Typically, doping trivalent lanthanides (Ln(III)) in the presence of sodium cholate afforded the hydrogel. The Ln(III) complexed to the carboxylate ions and caused the cholate moieties to come together.…”

Section: Thermoresponsive Polymers and Hydrogelsmentioning

confidence: 99%

Polymers made of bile acids: from soft to hard biomaterials

Cunningham

Zhu

2016

Can. J. Chem.

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Bile acids are gaining increasing importance as building blocks in the development of novel polymeric materials. This is evidenced by the growing number of publications advocating the advantages of their incorporation in the design and construction of materials. Composed of a rigid steroid backbone, functional groups with potential towards diverse reactions, and a biocompatible framework, there are various ways in which these molecules can be utilized to afford biomaterials via distinct architectures. Soft materials utilize the intrinsic capacity of bile acids to self-assemble and have seen a range of applications, most notably in the field of drug delivery. On the other hand, there is also the possibility of including bile acids in the polymer backbone, which has been used in the preparation of elastomers. This review discusses a selection of materials that can be prepared using bile acids and the advantages afforded by these molecules. Focus will be on the development of soft and hard materials, where soft materials are described as being held by weak intermolecular interactions, whereas hard materials are mechanically stronger with bile acids covalently incorporated in the polymer network.Key words: bile acids, polymers, biomaterials, drug delivery, dental composites. Résumé :Les acides biliaires sont des synthons de plus en plus importants dans la mise au point de nouveaux matériaux à base de polymères, comme en témoigne le nombre croissant de publications préconisant leur incorporation dans la conception et la fabrication de ces matériaux. Composées d'un squelette stéroïdien rigide, de groupes fonctionnels au potentiel réactionnel diversifié, et d'une structure biocompatible, ces molécules, de par leurs différentes architectures, présentent diverses possibilités d'application dans le domaine des biomatériaux. La capacité intrinsèque des acides biliaires à s'autoassembler permet de produire des matériaux souples dont les applications sont variées, notamment dans le domaine de la libération des médica-ments. Par ailleurs, la possibilité d'intégrer des acides biliaires dans le squelette de polymères a aussi été explorée dans le cadre de la fabrication d'élastomères. Le présent article de synthèse porte sur une sélection de matériaux pouvant être préparés à partir d'acides biliaires et sur les avantages que comportent ces molécules. Une attention particulière est accordée à la mise au point de matériaux souples et de matériaux rigides. On y décrit les matériaux souples comme étant maintenus par des interactions intermoléculaires faibles, tandis que les matériaux rigides, dans lesquels les acides biliaires sont incorporés dans le réseau polymérique par des liaisons covalentes, sont mécaniquement plus solides. [Traduit par la Rédaction]

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Metal cholate hydrogels: versatile supramolecular systems for nanoparticle embedded soft hybrid materials

Cited by 90 publications

References 55 publications

A Stimuli‐Responsive Metallohydrogel Exhibiting Cyclohexane‐Like Hydrophobicity

A Stimuli‐Responsive Metallohydrogel Exhibiting Cyclohexane‐Like Hydrophobicity

Synthesis of high-voltage spinel LiNi0.5Mn1.5O4 material for lithium-ion batteries by a metal-cholate supramolecular hydrogel as precursor

Polymers made of bile acids: from soft to hard biomaterials

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