A novel hydrogel containing thioether group as selective support material for preparation of gold nanoparticles: Synthesis and catalytic applications

Ilgın, Pınar; Özay, Özgür; Özay, Hava

doi:10.1016/j.apcatb.2018.09.066

Cited by 86 publications

(39 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…With the development of hydrogel nanoparticles with many applications and the benefits of nanoparticles, there is also a great opportunity for the inclusion of other types of nanoparticle research in FFSs [124,125,126,127,128,129,130,131,132,133,134,135,136]. For example, a future study will provide a detailed understanding of how nanosized drugs can be incorporated and stabilized in FFSs and be delivered effectively to targeted sites.…”

Section: Formulation Design Of Controlled Drug Release Film-forminmentioning

confidence: 99%

Controlled Release Film Forming Systems in Drug Delivery: The Potential for Efficient Drug Delivery

Tran

2019

Pharmaceutics

View full text Add to dashboard Cite

Despite many available approaches for transdermal drug delivery, patient compliance and drug targeting at the desired concentration are still concerns for effective therapies. Precise and efficient film-forming systems provide great potential for controlling drug delivery through the skin with the combined advantages of films and hydrogels. The associated disadvantages of both systems (films and hydrogels) will be overcome in film-forming systems. Different strategies have been designed to control drug release through the skin, including changes to film-forming polymers, plasticizers, additives or even model drugs in formulations. In the current review, we aim to discuss the recent advances in film-forming systems to provide the principles and review the methods of these systems as applied to controlled drug release. Advances in the design of film-forming systems open a new generation of these systems.

show abstract

Section: Formulation Design Of Controlled Drug Release Film-forminmentioning

confidence: 99%

Controlled Release Film Forming Systems in Drug Delivery: The Potential for Efficient Drug Delivery

Tran

2019

Pharmaceutics

View full text Add to dashboard Cite

show abstract

“…In addition, the hydrogel‐NP formulated hybrid systems have been found to exhibit good catalytic behaviour. In hydrogel‐NP hybrid system, the porous nature of hydrogel helps to disperse the NPs and diffuses the reactants, which results in the increase of catalytic activity of NPs [12,15] …”

Section: Introductionmentioning

confidence: 99%

Pt Nanoparticles Supported on a Dynamic Boronate Ester‐Based G‐quadruplex Hydrogel as a Nanoreactor

Ghosh

Biswas

Bhowmik

et al. 2020

Chemistry An Asian Journal

View full text Add to dashboard Cite

Herein, we have reported a dynamic boronic ester mediated guanosine (G) based G-quadruplex hydrogel as an ideal template for in situ and 'green chemical' approach for the synthesis and stabilization of Pt NPs. 11 B NMR and FT-IR spectra reveal the formation of dynamic boronate ester bonds. The TEM images of the G-quadruplex hydrogel reveal entangled three-dimensional (3D) crosslink nanofibrillar networks with average diameter of 20 nm. Similarly, AFM images of the hydrogel show dense nanofibrillar assembly with an average height of 6 nm. The in situ generated Pt NPs have been characterized using TEM and XPS techniques. The average size of the nanofiber supported Pt NPs is 1.5 nm. The Pt NPs embedded G-quadruplex hydrogel shows better mechanical stiffness than the native hydrogel as the storage modulus (G') increases to 2250 Pa from 317.08 Pa after the in situ generation of Pt NPs. Furthermore, G-quadruplex hydrogel supported Pt NPs have been used as a catalytic system for hydrogenation reaction of different aromatic nitro compounds in aqueous medium. The use of G-quadruplex molecular system as a template for the synthesis and stabilization of metal NPs would be an interesting area of research.

show abstract

“…As the heterogeneous solid catalysts supported by hydrogel network, both AuNPs‐HG‐1 and AuNPs‐HG‐2 could be conveniently separated and recovered from the reaction mixture and then reused in the next cycle. AuNPs‐HG‐1 remains in its catalytic performance for at least seven cycles (Figure S15–S20, Supporting Information), while AuNPs‐HG‐2 could be reused at least for four rounds (Figure S21–S23, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

AuNPs composites of gelatin hydrogels crosslinked by ferrocene‐containing polymer as recyclable supported catalysts

Long

Song

Shi

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

To fabricate a recyclable supported catalyst based on gold nanoparticles (AuNPs) and gelatin hydrogel (HG) composites, a ferrocene (Fc)-containing tetrablock copolymer [P(NCHO-b-NFc-b-NTEG-b-NCHO)] was used as both reducing and stabilizing agents for AuNPs and as a crosslinker for HG. First, the effects of Fc-containing polymers, including homopolymer PNFc and copolymer P(NCHO-b-NFc-b-NTEG-b-NCHO), and different solvent systems on the morphology and aggregation of AuNPs were examined by using ultraviolet-visible spectroscopy, transmission electron microscopy, and dynamic light scattering. Second, two strategies (blending and soaking) were applied to prepare different AuNPs/HG composites (AuNPs-HG), and their structure and properties were studied by using various techniques including scanning electron microscopy, X-ray diffraction, and thermogravimetry. Finally, the catalytic performance and reusability of AuNPs-HG-1 (via blending) and AuNPs-HG-2 (via soaking) were evaluated utilizing the model catalytic reduction of 4-nitrophenol to 4-aminophenol by NaBH 4 . Results indicated that P(NCHO-b-NFc-b-NTEG-b-NCHO) dissolved in N,Ndimethylformamide was the optimal reductant and stabilizer to prepare AuNPs. The in situ reduction of Au III ions to Au 0 particles was very essential for the fabrication of AuNPs-HG in terms of hydrogel pore size, Au 0 distribution and immobilization stability, and hydrogel thermal stability. Due to the stronger interactions among AuNPs, P(NCHO-b-NFc-b-NTEG-b-NCHO), and gelatin molecules in the blending strategy, AuNPs-HG-1 showed better mechanical stability and catalytic performance and more reusing cycles than AuNPs-HG-2. This work highlights the design and fabrication of robust recyclable supported AuNP catalyst by using eco-friendly Fccontaining HGs.

show abstract

A novel hydrogel containing thioether group as selective support material for preparation of gold nanoparticles: Synthesis and catalytic applications

Cited by 86 publications

References 57 publications

Controlled Release Film Forming Systems in Drug Delivery: The Potential for Efficient Drug Delivery

Controlled Release Film Forming Systems in Drug Delivery: The Potential for Efficient Drug Delivery

Pt Nanoparticles Supported on a Dynamic Boronate Ester‐Based G‐quadruplex Hydrogel as a Nanoreactor

AuNPs composites of gelatin hydrogels crosslinked by ferrocene‐containing polymer as recyclable supported catalysts

Contact Info

Product

Resources

About