Keratin capped silver nanoparticles – Synthesis and characterization of a nanomaterial with desirable handling properties

Martin, Justin J.; Cardamone, Jeanette M.; Irwin, Peter L.; Brown, Eleanor M.

doi:10.1016/j.colsurfb.2011.07.013

Cited by 32 publications

(25 citation statements)

References 41 publications

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“…Further, BSA added after the reduction step was already studied regarding the protein-NP interactions and their consequences on the particle size [20] and colloidal stability [14]. On the other hand, protein addition before the reduction step was performed with keratin as the stabilizing agent [19]. The used strategies are simple (mixing the reactants at room temperature), reproducible and low-cost.…”

Section: Synthesis and Characterization Of Ag-npmentioning

confidence: 99%

“…However, biological relevant media strongly induce Ag-NP aggregation due to the high ionic strength that reduces the electrical double layer around the NP [14]. Therefore, capping agents such as self-assembled monolayers [15], surfactants [16], polymers [17], dendrimers [18] and proteins [19][20][21] have been employed to protect Ag-NP from aggregation. Protein molecules not only are excellent stabilizing agent but also create biofunctionalized Ag-NP [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

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Unaffected features of BSA stabilized Ag nanoparticles after storage and reconstitution in biological relevant media

Valenti

Giacomelli

2015

Colloids and Surfaces B: Biointerfaces

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Section: Synthesis and Characterization Of Ag-npmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Unaffected features of BSA stabilized Ag nanoparticles after storage and reconstitution in biological relevant media

Valenti

Giacomelli

2015

Colloids and Surfaces B: Biointerfaces

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“…The combined presence of NH 2 and CO 2 H groups in proteins provides for stability of the SN in the hybrid systems when their concentration is >6 mass % [170]. Aggregates with hybrid structure and molecular mass (MM)~2.5·10 5 are formed upon the interaction of SN and oligopeptides with N-and O-containing functional groups (MM » 6.5·10 3 ) obtained by hydrolysis of keratin [164].…”

Section: Hybrid Systems With An Organic Polymer Matrixmentioning

confidence: 99%

“…Intensive work is now underway in an attempt to obtain bionanocomposites derived from proteins or their low-molecular-weight analogs (peptides) and SN [163,164]. The interaction of the amino-containing structural units in the protein, bacteriorhodopsin (bR), namely, cysteine, arginine, lysine (polylysine) with SN [165,166] leads to a shift of the PR band toward longer wavelengths (Dl depends on the structure of the amino-containing spacer) along with an increase in the intensity of this band by 4%-26%, which permits us to use these composites as sensitizers for photochemical reactions [167].…”

Section: Hybrid Systems With An Organic Polymer Matrixmentioning

confidence: 99%

Preparation, Structure, and Properties of Hybrid Polymer Composites Containing Silver Clusters and Nanoparticles

Tolstov

2015

Theor Exp Chem

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The major methods for the preparation of silver-containing polymer composite nanosystems and the formation of their hybrid structure are examined. Special attention is focused on a new class of silver-containing hybrid systems, namely, organic-inorganic coordination polymers, obtained by the self-assembly of silver complexes. The effect of intercomponent interaction on the structure and properties of these hybrid composites was examined.The creation of new improved materials is an important goal of modern chemistry and materials science. Polymer composites with hybrid structure are among such materials and hold interest since they display a combination of properties characteristic for each of the inorganic and organic components [1-3] and, in some cases, unique properties related to the specific nature of their structure [4]. From a modern viewpoint, hybrid organic-inorganic materials are formed by the combination of components, differing in their chemical nature, on a molecular or nano level through formation of chemical bonds ((non)covalent bonds, hydrogen bonding, and donor-acceptor bonds) or weaker physical bonds (van der Waals and electrostatic interactions) [5]. Special attention is given to the stability of the nanodispersed components due to interaction between the nanophase and various stabilizers [6]. The interest in silver-containing hybrid polymer composite materials, including nanocomposites, which, by their very nature, are a priori hybrid systems, is attributed to a set of properties of the matrix itself, which often possesses hybrid structure, properties of silver in ionic and nanodispersed forms, and new properties related to the appearance of hybrid silver-polymer structures [7,8]. Special interest is presently found in bionanocomposites derived from biopolymers and silver nanoparticles (SN), which display specific physicochemical properties, in particular, electrochemical, photochemical, and catalytic properties highly dependent on the dimensions and polydispersion of the nanophase [9, 10] as well as biological activity due to the ionization of the metal atoms in the presence of H 2 O/O 2 and the interaction between the SN surface and functional groups of the various biomolecules [11].In light of the important role of the polymer matrix in formation of the major structural characteristics and properties of silver-containing hybrid systems, we should classify these materials according to their chemical structure.Composites with Silver Nanoparticles (SN) Dispersed in a Polymer Matrix with Hybrid Structure. The major distinguishing feature of such materials is the prior synthesis of the hybrid polymer matrix obtained due to the formation of chemical bonds between the organic and inorganic components with subsequent introduction of SN into the system. The synthesis of the SN may be either in situ or ex situ. 740040-5760/15/5102-0074

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“…General incidence of biopolymers in nature, low cost, biocompatibility, biodegradibility makes biomaterials apparent to use as host material for AgNPs. Biopolymers such as peptidebased (gelatin [28,[30][31][32][33][34][35], glutathione [36], keratin [37]) or polysaccharyde-based (alginate [26,27,[38][39][40][41], chitosan [32,34,[42][43][44][45][46][47], starch [48]) polymers are good capping agents for silver ions [38,49,50]. Amine groups, oxygen atoms present in ring or -OH groups stabilize Ag + s via complexation and ensure homogenous distribution of later reduced AgNPs within the polymer solution or matrix.…”

Section: Introductionmentioning

confidence: 99%

One-pot synthesis of gelatin-based, slow-release polymer microparticles containing silver nanoparticles and their application in anti-fouling paint

Szabó¹,

Mihály²,

Sajó³

et al. 2014

Progress in Organic Coatings

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Gelatinous polymer matrix microparticles containing silver nanoparticles (AgNPs) were prepared by a novel method to obtain quasi non-swelling anti-fouling paint additives with slow-release characteristics. A w/o type dispersion were elaborated with the aqueous phase of gelatin, urea, silver-nitrate and formaldehyde dispersed in linseed oil. Gelatin was crosslinked by formaldehyde, together with urea for limiting the swelling of the product. Silvernitrate was reduced with the assistance of gelatin and formaldehyde into homogenously dispersed AgNPs. The microparticles and embedded AgNPs were visualized by scanning and transmission electronmicroscopy. Encapsulated AgNPs with ~18nm crystallite size were identified by X-ray powder diffraction. Characterization of gelatin-urea-formaldehyde polymer matrices was carried out by attenuated total reflectance FTIR spectroscopy. Silver dissolution from microparticles and paints with AgNP-containing microparticles was measured by inductively coupled plasma spectrometer and resulted in highly sustained release, compared to unmodified gelatin microparticles and paints containing uncapsulated silver salts. A seven month-long fouling experiment run in natural sweetwater media showed that solvent-based acrylic paint with AgNPs-containing gelatinous microparticles as additives offered resistance against biofouling at low Ag-release ratio.

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Keratin capped silver nanoparticles – Synthesis and characterization of a nanomaterial with desirable handling properties

Cited by 32 publications

References 41 publications

Unaffected features of BSA stabilized Ag nanoparticles after storage and reconstitution in biological relevant media

Unaffected features of BSA stabilized Ag nanoparticles after storage and reconstitution in biological relevant media

Preparation, Structure, and Properties of Hybrid Polymer Composites Containing Silver Clusters and Nanoparticles

One-pot synthesis of gelatin-based, slow-release polymer microparticles containing silver nanoparticles and their application in anti-fouling paint

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