Formation and Structure of Polyelectrolyte and Nanoparticle Multilayers: Effect of Particle Characteristics

Bogdanović, Goran A.; Sennerfors, Therese; Zhmud, Boris; Tiberg, Fredrik

doi:10.1006/jcis.2002.8583

Cited by 26 publications

(23 citation statements)

References 41 publications

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“…In a recent study we investigated the effect of particle characteristics on the multilayer film formation and the resulting film structure (37). It was found that the multilayer films containing the P1 particles had densities much higher than those of the other multilayer films, in accordance with the observations in the present study.…”

Section: Resultssupporting

confidence: 93%

Adsorption of Polyelectrolyte–Nanoparticle Systems on Silica: Influence of Ionic Strength

Sennerfors¹,

Solberg

Tiberg

2002

Journal of Colloid and Interface Science

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Section: Resultssupporting

confidence: 93%

Adsorption of Polyelectrolyte–Nanoparticle Systems on Silica: Influence of Ionic Strength

Sennerfors¹,

Solberg

Tiberg

2002

Journal of Colloid and Interface Science

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“…To address these challenges, a number of approaches have been investigated, such as liposomal size variation or liposomal surface modification via coating with a single layer of hydrophilic polymers (4)(5)(6). Emerging innovative approaches include the concept of polyelectrolyte coatings obtained by the alternate deposition of polyanions and polycations for surface functionalization (7).…”

Section: Introductionmentioning

confidence: 99%

Investigating the Effect of Polymeric Approaches on Circulation Time and Physical Properties of Nanobubbles

et al. 2010

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“…5 The layer-by-layer ionic self-assembly of silica nanoparticles has been studied extensively. [6][7][8][9][10][11][12] Three of these studies 7,10,11 found that the indices of refraction of alternating layers of silica nanoparticles and polycations were in the range n = 1.25-1.36 and, therefore, these films potentially could be used for AR coatings. Hattori 10 demonstrated that a single bilayer of silica nanoparticles/polycation could be an AR coating, but tuning the minimum reflectivity of this film required different size nanoparticles.…”

mentioning

confidence: 99%

The influence of void space on antireflection coatings of silica nanoparticle self-assembled films

Yancey

Zhong

Heflin

et al. 2006

Journal of Applied Physics

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This study investigates the deposition by ionic self-assembly of alternating silica nanoparticle and poly(allyamine hydrochloride) layers with the goal to create a single-material antireflection coating. The condition that the optical thickness of the film be equal to λ∕4 can be satisfied by depositing the requisite number of bilayers to obtain minimum reflectivity at the chosen wavelength. The second condition for antireflection, that the index of refraction of the film be equal to nc=n1n2, where n1 and n2 are the refractive indices of the media on each side of the film, requires that nc=1.22 for a film with air on one surface and glass (assuming n=1.50) on the other. Such a low index of refraction can be created in films consisting of nanoparticles if the proper volume fraction of void space exists in the film. In the wavelength range λ=350–700nm, minimum reflectivities of ⩾2.0%, ⩽0.2%, and ⩽0.2% were obtained with films created on both sides of a glass slide using 15, 45, and 85nm average diameter silica nanoparticles, respectively. The maximum transmittances for the corresponding films were 97%, ⩾98%, and ⩾97%. The minimum reflectance of films prepared with 15nm average diameter silica nanoparticles was limited by insufficient void volume in the films. The maximum transmittances of films prepared with 45 and 85nm average diameter silica nanoparticles were limited by diffuse scattering arising from the inhomogeneous morphology of the films. The extinction of normal incident light (=1−R−T, where R and T are the reflectance and transmittance, respectively) provides a measure of diffuse scattering for light with wavelength longer than the absorption edge of the film. It was found that the extinction is proportional to 1∕λ4 for λ>450nm suggesting that the mechanism for extinction at long wavelengths is Rayleigh scattering. The Rayleigh slope (diffuse scattering intensity versus 1∕λ4) increased with increasing diameter silica nanoparticles. For a given average diameter silica nanoparticle, the Rayleigh slope increased with increasing film thickness for films less than approximately 150nm thick, but did not depend on film thickness, within experimental scatter, for films that were thicker than 150nm. The results suggest that the source of Rayleigh scattering was not in the bulk of the film (such as, fluctuations in the index of refraction), but rather was primarily associated with surface roughness.

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Formation and Structure of Polyelectrolyte and Nanoparticle Multilayers: Effect of Particle Characteristics

Cited by 26 publications

References 41 publications

Adsorption of Polyelectrolyte–Nanoparticle Systems on Silica: Influence of Ionic Strength

Adsorption of Polyelectrolyte–Nanoparticle Systems on Silica: Influence of Ionic Strength

Investigating the Effect of Polymeric Approaches on Circulation Time and Physical Properties of Nanobubbles

The influence of void space on antireflection coatings of silica nanoparticle self-assembled films

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