AurOrGlass: ORMOSIL Sol‐Gel Glasses Functionalized with Gold Nanoparticles for Advanced Optical Applications

2019 ◽  
Vol 4 (30) ◽  
pp. 8746-8750
Author(s):  
Rosaria Ciriminna ◽  
Alexandra Fidalgo ◽  
Laura M. Ilharco ◽  
Mario Pagliaro
Keyword(s):  
Gold Nanoparticles ◽  
Sol Gel ◽  
Optical Applications ◽  
Gel Glasses

scholarly journals Cover Picture: AurOrGlass: ORMOSIL Sol‐Gel Glasses Functionalized with Gold Nanoparticles for Advanced Optical Applications (30/2019)

2019 ◽  
Vol 4 (30) ◽  
pp. 8745-8745
Author(s):  
Rosaria Ciriminna ◽  
Alexandra Fidalgo ◽  
Laura M. Ilharco ◽  
Mario Pagliaro
Keyword(s):  
Gold Nanoparticles ◽  
Sol Gel ◽  
Optical Applications ◽  
Gel Glasses

New type of nanocomposite material for optical applications: organic nanocrystals in sol-gel glasses

2000 ◽  
Author(s):  
I. Wang ◽  
Nathalie Sanz ◽  
Alain Ibanez ◽  
J. F. Nicoud ◽  
Patrice L. Baldeck
Keyword(s):  
Sol Gel ◽  
Nanocomposite Material ◽  
Organic Nanocrystals ◽  
New Type ◽  
Optical Applications ◽  
Gel Glasses

Organic nanocrystals embedded in sol–gel glasses for optical applications

2000 ◽  
Vol 115 (1-3) ◽  
pp. 229-234 ◽  
Author(s):  
N. Sanz ◽  
P.L. Baldeck ◽  
A. Ibanez
Keyword(s):  
Sol Gel ◽  
Organic Nanocrystals ◽  
Optical Applications ◽  
Gel Glasses

Photopatterning of hybrid sol-gel glasses for optical and nonlinear optical applications

2004 ◽  
Author(s):  
Mathieu Feuillade ◽  
Celine Croutxe-Barghorn ◽  
Loic Mager ◽  
Christiane P. Carre ◽  
Alain F. Fort
Keyword(s):  
Nonlinear Optical ◽  
Sol Gel ◽  
Optical Applications ◽  
Gel Glasses ◽  
Nonlinear Optical Applications

Optimization of radical photopolymerization in hybrid sol-gel glasses: advantages of bicomponent photoactive systems

2002 ◽  
Vol 726 ◽  
Author(s):  
Olivier Soppera ◽  
Céline Croutxé-Barghorn ◽  
Christiane Carré
Keyword(s):  
Network Formation ◽  
Sol Gel ◽  
Interpenetrating Network ◽  
Passive Components ◽  
Organic Part ◽  
Reaction Characteristics ◽  
Spatio Temporal ◽  
Optical Applications ◽  
Gel Glasses ◽  
Inorganic Network

AbstractUse of organosilanes as hybrid systems is of increasing importance for their promising applications in the optical field. Considerable attention has been paid to the study of the inorganic network. However, poor information concerning the organic part involved in the solgel process is available. This is yet a fundamental requirement for optical applications where homogeneity at molecular scale is essential. Taking into account the specificity of the sol-gel medium, characteristics of the organic part have to be adapted with the view of optimizing the properties of the final material. Hybrid material used in this study consisted of organosilane precursor with methacrylate functions, titanium isoproxide, methacrylic acid and photoinitiator. The polycondensation of the inorganic component was achieved sequentially and simultaneously with the photopolymerization of the organic one to provide a mutually interpenetrating network. Polymerization in the UV range presents the advantages of fast-curing at temperature compatible with fragile substrates and spatio-temporal selectivity of the reaction. Characteristics of the photopolymerization process taking place in hybrid sol-gel materials were investigated by UV and Real Time FTIR spectroscopy. Besides the study of the organic network, NMR investigations led information relative to the inorganic network formation during the sol maturation. The whole results provide insights into the optimization of the photochemical step. Indeed, it was demonstrated that titanium components added as passive components to increase the refractive index of the layer, can induce polymerization under a medium pressure mercury arc lamp irradiation. In addition, mix photoactive systems involving an organic photoinitiator and titanium components were investigated and led to a better efficiency for the photoinitiation. Final materials with higher conversion ratio of the methacrylate function and requiring shorter irradiation times were achieved.

TEM visualization of surface replicated acid and base catalyzed sol-gel glasses

1986 ◽  
Vol 44 ◽  
pp. 448-449
Author(s):  
George C. Ruben ◽  
Merrill W. Shafer
Keyword(s):  
Elevated Temperatures ◽  
Sol Gel ◽  
Basic Medium ◽  
Glass Transition Point ◽  
Structural Space ◽  
Acid And Base ◽  
Organometallic Precursors ◽  
New Processing ◽  
Gel Glasses ◽  
Physical Phenomena

Traditionally ceramics have been shaped from powders and densified at temperatures close to their liquid point. New processing methods using various types of sols, gels, and organometallic precursors at low temperature which enable densificatlon at elevated temperatures well below their liquidus, hold the promise of producing ceramics and glasses of controlled and reproducible properties that are highly reliable for electronic, structural, space or medical applications. Ultrastructure processing of silicon alkoxides in acid medium and mixtures of Ludox HS-40 (120Å spheres from DuPont) and Kasil (38% K2O &62% SiO2) in basic medium have been aimed at producing materials with a range of well defined pore sizes (∼20-400Å) to study physical phenomena and materials behavior in well characterized confined geometries. We have studied Pt/C surface replicas of some of these porous sol-gels prepared at temperatures below their glass transition point.

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