Fabrication of a Stable Polyelectrolyte/Au Nanoparticles Multilayer Film

Fu, Yu; Hong, Xu; Bai, Shilong; Qiu, Dengli; Sun, Junqi; Wang, Zhiqiang; Zhang, Xi

doi:10.1002/1521-3927(20020301)23:4<256::aid-marc256>3.0.co;2-5

Cited by 61 publications

(52 citation statements)

References 10 publications

(11 reference statements)

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“…[13,14,25] Layer-by-layer (LbL) assembly that is based on the alternate adsorption of oppositely charged species has been a powerful technique for preparing multilayer GNP films because of its simplicity, flexibility, and effectiveness. [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] In addition to dithiols and PAH, proteins can serve as effective linking agents for the fabrication of multilayer thin films of GNP/protein nanocomposites. The interaction between GNPs and biomolecules, such as proteins and DNA, in solution has been extensively studied.…”

Section: Introductionmentioning

confidence: 99%

Layer‐by‐Layer Fabrication and Characterization of Gold‐Nanoparticle/Myoglobin Nanocomposite Films

Qi¹,

Honma²,

Ichihara³

et al. 2005

Adv Funct Materials

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Multilayer thin films of ∼ 7 nm diameter gold nanoparticles (GNPs) linked with horse heart myoglobin (Mb) are fabricated, for the first time, by layer‐by‐layer (LbL) assembly on glass slides, and silicon and plastic substrates. The GNP/Mb nanocomposite films show sharp surface plasmon resonance (SPR) absorption bands that are used to follow the LbL growth of the film and to determine the kinetics of GNP adsorption on the Mb‐modified surface. The GNP/Mb nanocomposite films are characterized using atomic force microscopy, transmission electron microscopy, polarized UV‐vis spectroscopy, and spectroscopic ellipsometry. The GNPs in the multilayer films are spatially separated from one another, and interparticle interactions remain in the film, making it optically anisotropic. The GNP/Mb nanocomposite films are stable in air at temperatures up to 100 °C, and can withstand successive immersions in strongly acidic and basic solutions. The SPR absorption band of the GNP/Mb nanocomposite film in air exhibits a red‐shift in the wavelength maximum and an increase in the maximum absorbance relative to that in water. This result, which is in contrast to that observed with a GNP monolayer on an aminosilane‐functionalized substrate, suggests the shrinkage in air and swelling in water of Mb molecules embedded in the nanocomposite film.

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Section: Introductionmentioning

confidence: 99%

Layer‐by‐Layer Fabrication and Characterization of Gold‐Nanoparticle/Myoglobin Nanocomposite Films

Qi¹,

Honma²,

Ichihara³

et al. 2005

Adv Funct Materials

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“…The absorption maxima of these bands (l max ) were fixed at a wavelength of 542 nm and did not change with the number of dipping cycles. Previous reports [21][22][23][24][25][26][27] have pointed out that in multilayer gold nanoparticles, strong interactions between neighboring dipolar particles can readily take place, which cause a red shift in l max with increasing number of dipping cycles and/or generate a new absorption band at a longer wavelength. In our case, however, no such features appear in the spectra, as shown in Figure 2, suggesting that the gold nanoparticles in films are spatially separated from each other, probably because of the long PLGA chains attached to the gold nanoparticles, and that the interparticle interactions are relatively weak.…”

Section: Resultsmentioning

confidence: 99%

“…The LbL assembly takes advantage of the same attractive forces that form complexes but in a controlled manner that produces thin, conformal films that can coat a variety of surfaces and thus are a powerful method for fabricating multilayer gold nanoparticle films. [15][16][17][18][19][20][21][22][23][24][25][26][27] In spite of these many reports, to the best of our knowledge, well-controlled gold nanoparticle assemblies guided with a polypeptide network have not yet been reported. The aim of this article is to construct homogeneously well-ordered gold nanoparticle multilayers assisted with a b-sheet peptide template.…”

Section: Introductionmentioning

confidence: 99%

Layer-by-layer fabrication of well-packed gold nanoparticle assemblies guided by a β-sheet peptide network

Higashi

Takagi

Koga

2010

Polym J

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In this study, we describe the first demonstration of well-ordered multilayer thin films of gold nanoparticles through a layer-bylayer (LbL) technique assisted by a polypeptide template. Anionic poly(L-glutamic acid) (PLGA)-modified gold nanoparticles were prepared as building units for LbL self-assembly. Two types of synthetic polymers, poly(L-lysine) (PLL) and poly(allylamine), were used as polycations that carry the same amino groups at the side chain, although the former is a polypeptide and the latter is a vinyl polymer. The deposition process and the resultant multilayer films were characterized by means of absorption, circular dichroism, Fourier transform infrared and atomic force microscopy measurements. Experimental results revealed that LbL multilayer properties, such as thickness, conformation of the peptide component, homogeneity and periodicity of nanoparticle layers, were significantly affected by the kind of polycations present. In particular, the combination of anionic PLGA-coated gold nanoparticles and cationic PLL induced b-sheet formation, which enabled the fabrication of a homogeneously well-packed gold nanoparticle multilayer without aggregation.

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“…One of the main advantages of the layer-by-layer assembly is the high versatility to entrap different types of metallic nanoparticles (silver, gold, copper) as well as a great capability for incorporating nanoparticles with a wide variety of shapes (spherical, hexagonal, triangle, rod) and sizes (micrometric or nanometric range) into the thin-films [141][142][143]. In order to corroborate the morphological aspect of the LbL coatings based on an adequate incorporation of metallic nanoparticles with different shapes, AFM images have been used to determine the distribution in the outer surface of the coatings, as it can be appreciated in Figure 18.…”

Section: Optical Fiber Sensorsmentioning

confidence: 99%

Design of Nanostructured Functional Coatings by Using Wet-Chemistry Methods

et al. 2018

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This review reports the implementation of novel nanostructured functional coatings by using different surface engineering techniques based on wet chemistry. In the first section, the theoretical fundaments of three techniques such as sol-gel process, layer-by-layer (LbL) assembly and electrospinning will be briefly described. In the second section, selected applications in different potential fields will be presented gathering relevant properties such as superhydrophobicity, biocide behavior or applications in the field of optical fiber sensors.

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Fabrication of a Stable Polyelectrolyte/Au Nanoparticles Multilayer Film

Cited by 61 publications

References 10 publications

Layer‐by‐Layer Fabrication and Characterization of Gold‐Nanoparticle/Myoglobin Nanocomposite Films

Layer‐by‐Layer Fabrication and Characterization of Gold‐Nanoparticle/Myoglobin Nanocomposite Films

Layer-by-layer fabrication of well-packed gold nanoparticle assemblies guided by a β-sheet peptide network

Design of Nanostructured Functional Coatings by Using Wet-Chemistry Methods

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