Polymer-trapped semiconductor particles

Mahler, Walter

doi:10.1021/ic00276a001

Cited by 76 publications

(26 citation statements)

References 1 publication

(1 reference statement)

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“…As mentioned above, optical constants of nanoparticles can differ from those of the bulk material and in addition depend on the particle size [39][40][41][42][69][70][71][72][73][74][75][76] , which will be evident below with the example of the refractive index. However, the most striking demonstration of related phenomena is probably, as indicated in the preceding section, the color dependence of nanoparticles on the particle size.…”

Section: Influence Of the Particle Size On Optical Properties Of Nanomentioning

confidence: 99%

“…Nanocomposites containing PbS have also been described. In particular, ethylene-methacrylic acid copolymers were mixed with Pb(CH 3 COO) 2 at 160 -190 8C, cooled to room temperature, and the resulting films were exposed to gaseous H 2 S 71,72,74,96) . This method yielded optically clear films with PbS contents up to ca.…”

Section: A Pbs-polymer Nanocomposites With High and Ultrahigh Refracmentioning

confidence: 99%

“…This method yielded optically clear films with PbS contents up to ca. 20% w/w 74) , corresponding to ca. 3% v/v (using 7.5 g/cm 3 for the density of PbS 97) and 9.4 g/cm 3 for the copolymer 74) ).…”

Section: A Pbs-polymer Nanocomposites With High and Ultrahigh Refracmentioning

confidence: 99%

“…20% w/w 74) , corresponding to ca. 3% v/v (using 7.5 g/cm 3 for the density of PbS 97) and 9.4 g/cm 3 for the copolymer 74) ). Such nanocomposites can act as non-linear optical materials 71) , but we estimate that the relatively low PbS volume content enhanced the refractive index of the copolymer only by ca.…”

Section: A Pbs-polymer Nanocomposites With High and Ultrahigh Refracmentioning

confidence: 99%

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Nanocomposites of polymers and metals or semiconductors: Historical background and optical properties

Caseri¹

2000

Macromol. Rapid Commun.

535

335

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Upon transmission of visible light through composites comprising of a transparent polymer matrix with embedded particles, the intensity loss by scattering is substantially reduced for particle diameters below 50–100 nm (nanoparticles, nanosized particles). As a consequence, related materials (nanocomposites) have found particular interest in optical studies. The first part of this article deals with a historical survey on nanoparticles and nanocomposites and the importance of small particle sizes on their optical properties. The second part focuses on results from our laboratory concerning nanocomposites with extremely high or low refractive indices and dichroic nanocomposites and their application in bicolored liquid crystal displays (LCD). The inorganic colloids required for these studies (lead sulfide, iron sulfides, gold, and silver) were prepared in situ in presence of a polymer or isolated as redispersable metal colloids modified at the surface with a self‐assembled monolayer (SAM) of an alkanethiol. The nanocomposites themselves were finally obtained by coprecipitation, spin coating, solvent casting or melt extrusion, with poly(ethylene oxide), gelatin, poly(vinyl alcohol) and polyethylene as matrix polymers.

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Section: Influence Of the Particle Size On Optical Properties Of Nanomentioning

confidence: 99%

Section: A Pbs-polymer Nanocomposites With High and Ultrahigh Refracmentioning

confidence: 99%

Section: A Pbs-polymer Nanocomposites With High and Ultrahigh Refracmentioning

confidence: 99%

Section: A Pbs-polymer Nanocomposites With High and Ultrahigh Refracmentioning

confidence: 99%

See 2 more Smart Citations

Nanocomposites of polymers and metals or semiconductors: Historical background and optical properties

Caseri¹

2000

Macromol. Rapid Commun.

535

335

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“…The resulting transition metal ionomer was treated with H2S in order to precipitate the corresponding sulfides, e.g. PbS, as small dusters in the glassy polymer [2][3][4]. In this way, PbS crystallites or clusters with an average diameter of 2.5 nm could be prepared.…”

Section: Introductionmentioning

confidence: 99%

Inorganic nanoclusters in organic glasses — Novel materials for electro-optical applications

Möller¹,

Künstle

Kunz

1991

Synthetic Metals

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Ionomers

Kim¹,

Luqman²,

Song³

2010

Encyclopedia of Polymer Science and Technology

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Since the early 1950s, the introduction of ionic groups has been recognized as a tool that can change the polymer properties. Thus, ionomers, polymers that contain a small amount of ionic groups along the polymer backbone chains, have received considerable attention from industrial as well as academic arenas. It has been found that ionomers exhibit unique properties and morphology, such as two T g s, high melt viscosity, transport behavior, and SAXS “ionomer” peak. In this article, we set out with a introduction on ionomers, and then move on to multiplet/cluster concepts. Subsequently, the glass transition temperatures of ionomers have been discussed. The next section is devoted to a discussion of physical properties of various ionomers, that is, polyethylene‐based ionomers, polytetrafluoroethylene‐based ionomers, polystyrene‐based ionomers, block ionomers, telechelic ionomers, and star ionomers. In the following section, three different types of plasticization using polar, non‐polar, and amphiphilic plasticizers are discussed. Then, various ionic interactions as a tool for miscibility improvement are described. The last section deals with the applications of ionomers briefly.

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Polymer-trapped semiconductor particles

Cited by 76 publications

References 1 publication

Nanocomposites of polymers and metals or semiconductors: Historical background and optical properties

Nanocomposites of polymers and metals or semiconductors: Historical background and optical properties

Inorganic nanoclusters in organic glasses — Novel materials for electro-optical applications

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