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Akamatsu, Yoshinori; Makita, Kensuke; Inaba, Hiroshi; Nakazumi, Hiroyuki; Minami, Tsutomu

doi:10.1023/a:1008726925319

Cited by 14 publications

(10 citation statements)

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“…Superfine organic pigments are also used to coat large sheets of glass for architectural purposes. 91 A dipcoating facility has been built up and the practical durability of the colored thin films investigated by several abrasion and weathering tests. It was concluded that there is potential for interior use.…”

Section: Exploiting Passive Opticalmentioning

confidence: 99%

Hybrid Sol−Gel-Derived Polymers: Applications of Multifunctional Materials

2001

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The homogeneous combination of inorganic and organic moieties in a single-phase material provides unique possibilities to tailor the mechanical, electrical, and optical properties with respect to numerous applications. The synthetic pathway follows the well-known sol−gel procedure. Nevertheless, the establishment of defined hybrid products necessitates a basic understanding of the underlying chemistry as well as of the parameters influencing the processing techniques. Modern spectroscopy provides versatile tools, e.g., multinuclear NMR experiments and Raman scattering to investigate the sol−gel processing of organo(alkoxy)silanes in their co-condensation reactions with main group or transition metal alkoxides as well as in their copolymerization reactions with each other or with organic molecules. This almost infinite modular design concept has led to the industrial application of coatings for transparent plastics, glasses, and metals to prevent these substrates from mechanical abrasion, permeation, or corrosion or to achieve decorative functions. Further passive optical properties can be realized by generating submicrometer surface patterns. By the integration of organic or inorganic dopants, like dyes or nanoparticles, highly sophisticated multifunctional hybrid polymers or nanocomposites are accessible and have become important to achieve active optical functions, e.g. switching, light harvesting, or storage media. Recently developed porous and dense bulk hybrid polymers have shown that the range of possible applications is not limited to surface refinement by coatings. This contribution reviews the present status as well as the perspectives of these types of advanced materials.

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Section: Exploiting Passive Opticalmentioning

confidence: 99%

Hybrid Sol−Gel-Derived Polymers: Applications of Multifunctional Materials

2001

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“…[24][25][26][27] Moreover, the large possibilities of doping and/or structuring these materials while keeping good optical transparency enlarge their application field to antibacterial, and colored coatings. [28][29][30][31][32] The most important property of glass is its luminous transmittance, which is the basis for applying plane glass in windows of buildings and vehicles, as front covers of displays and traffic signs. Glass is also highly accepted as a clean, impermeable and recyclable container material to distribute, store and consume beverages and other nutrition products.…”

Section: Passive Optical Hybrid Sol-gel Matricesmentioning

confidence: 99%

Hybrid materials for optics and photonics

2011

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The interest in organic-inorganic hybrids as materials for optics and photonics started more than 25 years ago and since then has known a continuous and strong growth. The high versatility of sol-gel processing offers a wide range of possibilities to design tailor-made materials in terms of structure, texture, functionality, properties and shape modelling. From the first hybrid material with optical functional properties that has been obtained by incorporation of an organic dye in a silica matrix, the research in the field has quickly evolved towards more sophisticated systems, such as multifunctional and/or multicomponent materials, nanoscale and self-assembled hybrids and devices for integrated optics. In the present critical review, we have focused our attention on three main research areas: passive and active optical hybrid sol-gel materials, and integrated optics. This is far from exhaustive but enough to give an overview of the huge potential of these materials in photonics and optics (254 references).

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“…Sol–gel materials with very interesting properties have also been widely applied in optics and photonics. ,, Avnir’s pioneering work, reported over 20 years ago, demonstrated, for the first time, the incorporation of Rhodamine 6G fluorophore dye into an inorganic glass without detriment to its optical properties and performance. Since then, a wealth of sol–gel formulations have been developed and applied as passive optical sol–gel materials for applications such as anticorrosion surface coatings, , antibacterial and colored coatings . Also, they have shown the potential to be used as active optical matrices with photochromic properties for the development of fast optical switches and optical data storage, or with luminescent properties for the fabrication of hybrid solid-state light-emitter approaches. , …”

Section: Introductionmentioning

confidence: 99%

“…The organo-alkoxysilane precursors and organic fluorescent dyes, as well as the polymerization experimental conditions, were tailored in order to obtain a highly homogeneous transparent material suitable for photonic applications. A thorough structural characterization was carried out by Fourier transform infrared (FT-IR) spectroscopy, 29 Si nuclear magnetic resonance ( 29 Si NMR), thermogravimetric analysis (TGA), N 2 adsorption Brunauer−Emmett−Teller (BET) porosimetry, and confocal microscopy. These studies revealed a stable nonporous highly cross-linked polymer network containing evenly dispersed fluorescent molecules.…”

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confidence: 99%

One-Step Patterning of Hybrid Xerogel Materials for the Fabrication of Disposable Solid-State Light Emitters

Carregal-Romero

Llobera

Cadarso

et al. 2012

ACS Appl. Mater. Interfaces

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The one-step room-temperature micropatterning of a fluorophore-doped xerogel material on silicon oxide substrates is reported. The organo-alkoxysilane precursors and organic fluorescent dyes, as well as the polymerization experimental conditions, were tailored in order to obtain a highly homogeneous transparent material suitable for photonic applications. A thorough structural characterization was carried out by Fourier transform infrared (FT-IR) spectroscopy, (29)Si nuclear magnetic resonance ((29)Si NMR), thermogravimetric analysis (TGA), N(2) adsorption Brunauer-Emmett-Teller (BET) porosimetry, and confocal microscopy. These studies revealed a stable nonporous highly cross-linked polymer network containing evenly dispersed fluorescent molecules. Xerogel microstructures having thicknesses between 4 and 80 μm and height-to-width ratios between 0.04 and 4, as well as showing different geometries, from well arrays to waveguides, were patterned in a single step by micromolding in capillaries (MIMIC) soft lithographic technique. The reliability of the replication process was tested by bright-field optical microscopy and scanning electron microscopy (SEM) that show the close fidelity of the microstructures to the applied mold. The optical performance of the developed material was demonstrated by fabricating waveguides and evaluating their corresponding spectral response, obtaining absorption bands, at the expected excitation wavelengths of the corresponding fluorescent dyes and gain due to photonic re-emission (fluorescence) at their corresponding dye emission wavelengths. The hybrid xerogel material and the application of the simple fabrication technology presented herein can be directly applied to the development of cost-effective photonic components, as could be light emitters, to be readily integrated in single-use lab-on-chip devices and other polymeric microsystems.

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Cited by 14 publications

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Hybrid Sol−Gel-Derived Polymers: Applications of Multifunctional Materials

Hybrid Sol−Gel-Derived Polymers: Applications of Multifunctional Materials

Hybrid materials for optics and photonics

One-Step Patterning of Hybrid Xerogel Materials for the Fabrication of Disposable Solid-State Light Emitters

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