Preparation of stable second‐order nonlinear optical films by sol–gel technique

Wang, Shiwei; Zhao, Lisha; Sun, Junqi; Cui, Zhanchen; Zhang, Daming

doi:10.1002/pat.1534

Cited by 9 publications

(4 citation statements)

References 18 publications

(13 reference statements)

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“…Such hybrids appear promising for several applications, including the making of solid-state lasers (optical components), the use as replacements for silicon dioxide as insulating materials in the microelectronic industry, or as anticorrosion or scratch resistant coatings and host materials for chemical sensors (Dubois et al, 2008;Wang et al, 2010Wang et al, , 2011Zheng et al, 2011). Also, the biomedical and pharmaceutical researches are showing a growing interest toward that class of materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of zirconia/polyethylene glycol hybrid materials by sol–gel processing and connections between structure and release kinetic of indomethacin

et al. 2013

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Controlled and local drug delivery systems of anti-inflammatory agents are attracting an increasing attention because of their extended therapeutic effect and reduced side effects. In this work, the sol-gel process was used to synthesize zirconia/polyethylene glycol (ZrO2/PEG) hybrid materials containing indomethacin for controlled drug delivery. Different percentages of PEG were introduced in the synthesis to modulate the release kinetic and an exhaustive chemical characterization of all samples was performed to detect the relationship between their structure and release ability. Fourier transform spectroscopy and solid-state NMR show that the Zr-OH groups of the inorganic matrix bond both the ethereal oxygen atoms of the polymer and the carboxylic groups of the drug. X-ray diffraction analysis ascertains the amorphous nature of those materials. Scanning electron microscopy detects the nanostructure and the homogeneous morphology of the synthesized materials. The bioactivity was demonstrated by the formation of a hydroxyapatite layer on the surface of the samples, after soaking in a simulated body fluid. The release kinetics study, performed by HPLC UV-Vis spectroscopy, proves that the release ability depends on PEG and the drug amount and also demonstrates the indomethacin integrity after the synthetic treatment.

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Section: Introductionmentioning

confidence: 99%

Synthesis of zirconia/polyethylene glycol hybrid materials by sol–gel processing and connections between structure and release kinetic of indomethacin

et al. 2013

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“…A 2-dimensional system showed improved thermal stability compared to the one-dimensional one. [292,293] Chromophores with two or more silane groups were prepared with relative impact on the final properties. [294,295] The grafting was achieved through photo-cross-linking [296] or polymerization reaction, for instance free radical polymerization in an interpenetrating methacrylate/silica hybrid matrix.…”

Section: Q10mentioning

confidence: 99%

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Parola

Julián‐López

Carlos

et al. 2016

Adv Funct Materials

240

116

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Research on hybrid inorganic‐organic materials has experienced an explosive growth since the 1980s, with the expansion of soft inorganic chemistry based processes. Indeed, mild synthetic conditions, low processing temperatures provided by “chimie douce” and the versatility of the colloidal state allow for the mixing of the organic and inorganic components at the nanometer scale in virtually any ratio to produce the so called hybrid materials. Today a high degree of control over both composition and nanostructure of these hybrids can be achieved allowing tunable structure‐property relationships. This, in turn, makes it possible to tailor and fine‐tune many properties (mechanical, optical, electronic, thermal, chemical…) in very broad ranges, and to design specific multifunctional systems for applications. In particular, the field of “Hybrid‐Optics” has been very productive not only scientifically but also in terms of applications. Indeed, numerous optical devices based on hybrids are already in, or very close, to the market. This review describes most of the recent advances performed in this field. Emphasis will be given to luminescent, photochromic, NLO and plasmonic properties. As an outlook we show that the controlled coupling between plasmonics and luminescence is opening a land of opportunities in the field of “Hybrid‐Optics”.

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“…These sol-gel materials with rigid network structures perform better thermal stability compared with other polymer materials. However, the rigid network may hinder the orientation of the chromophore during the poling process, so very few were reported with high r 33 values [11][12][13]. In order to obtain a higher r 33 value, it is important to adjust the content of sol-gel groups appropriately.…”

Section: Introductionmentioning

confidence: 99%