Synthesis, Self-Assembly, and Properties of Homoarm and Heteroarm Star-Shaped Inorganic-Organic Hybrid Polymers with a POSS Core

2013 ◽  
Vol 214 (14) ◽  
pp. 1580-1589 ◽  
Author(s):  
Weizhong Yuan ◽  
Xu Liu ◽  
Hui Zou ◽  
Jianbo Li ◽  
Hua Yuan ◽  
...  
Keyword(s):  
Self Assembly ◽  
Hybrid Polymers ◽  
Organic Hybrid

Helical, Nonracemic Inorganic−Organic Hybrid Polymers of Cadmium Halides with Pentadentate Bis(oxazoline) Ligands

2004 ◽  
Vol 126 (37) ◽  
pp. 11426-11427 ◽  
Author(s):  
Michael Seitz ◽  
Anja Kaiser ◽  
Sabine Stempfhuber ◽  
Manfred Zabel ◽  
Oliver Reiser
Keyword(s):  
Hybrid Polymers ◽  
Organic Hybrid ◽  
Oxazoline Ligands

New Inorganic-Organic Hybrid Polymers for Integrated Optics

1998 ◽  
Vol 519 ◽  
Author(s):  
Christof Roscher ◽  
Ralf Buestrich ◽  
Peter Dannberg ◽  
Oliver Rösch ◽  
Michael Popall
Keyword(s):  
Integrated Optics ◽  
Sol Gel ◽  
Optoelectronic Devices ◽  
Transmission Losses ◽  
Hybrid Polymers ◽  
Organic Hybrid ◽  
Catalyst Temperature ◽  
Tunable Refractive Index ◽  
Crosslinking Reactions ◽  
Gel Processing

AbstractNew fluorinated inorganic-organic hybrid polymers (ORMOCER*s) for integrated optics were synthesized via hydrolysis and condensation (sol-gel processing) of functionalized pentafluorophenylalkoxysi lanes followed by organic crosslinking reactions. Process parameters (catalyst, temperature and ratio of educts) were optimized to achieve low transmission losses at the most important wavelengths for telecommunication in the NIR range: 1310 nm and 1550 nm.The result is a photopatternable transparent ORMOCER (negative resist behavior) with excellent low losses: 0.20 dB/cm at 1310 nm and 0.30 dB/cm at 1550 nm.Besides their high transparency the fluorinated ORMOCERs show a variety of other properties enabling their use as waveguide materials within the production of optoelectronic devices and related thin film technology: good wetting and adhesion on various substrates (e.g. glass, silicon and several polymers), low processing temperatures (postbake below 160 °C), high thermal stability (decomposition > 250°C) and a tunable refractive index.

Inorganic-Organic Hybrid Polymers from Surface-Modified Oxometallate Clusters

2000 ◽  
Vol 628 ◽  
Author(s):  
Ulrich Schubert ◽  
Gregor Trimmel ◽  
Bogdan Moraru ◽  
Walter Tesch ◽  
Peter Fratzl ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Cluster Size ◽  
Polymer Chains ◽  
Scattering Data ◽  
Hybrid Polymers ◽  
X Ray ◽  
Organic Hybrid ◽  
X Ray Scattering ◽  
Solvent Uptake ◽  
Surface Modified

ABSTRACTInorganic-organic hybrid polymers were prepared by radical polymerization of methacrylic acid or methyl methacrylate with the (meth) acrylate-substituted oxozirconium and oxotitanium clusters Zr6(OH)4O4(OMc)12(OMc = methacrylate), Zr4O2(OMc)12, Ti6O4(OEt)8(OMc)8 and Ti4O2(OPri)6(OAcr)6(OAcr = acrylate). A few mol% of cluster is sufficient for an efficient cross-linking of the polymer chains. Small-angle X-ray scattering data indicate that the cluster size is retained in the polymers and that the microstructure of the cluster cross-linked samples can be described by a dispersion of identical spherical or disk-shaped clusters in the polymer. The obtained hybrid polymers exhibit a higher thermal stability because depolymerization reactions are inhibited. Contrary to undoped poly (methyl methacrylate), the cluster cross-linked polymers are insoluble but swell in organic solvents. The solvent uptake upon swelling decreases with an increasing amount of polymerized cluster.

Preparation of Mesostructured Siloxane−Organic Hybrid Films with Ordered Macropores by Templated Self-Assembly

Langmuir ◽  
2007 ◽  
Vol 23 (21) ◽  
pp. 10788-10792 ◽  
Author(s):  
Mikako Sakurai ◽  
Atsushi Shimojima ◽  
Masaru Heishi ◽  
Kazuyuki Kuroda
Keyword(s):  
Self Assembly ◽  
Hybrid Films ◽  
Organic Hybrid

Inorganic-organic hybrid materials for polymer electronic applications

2003 ◽  
Vol 769 ◽  
Author(s):  
R. Houbertz ◽  
J. Schulz ◽  
L. Fröhlich ◽  
G. Domann ◽  
M. Popall
Keyword(s):  
Thin Film ◽  
Water Vapor ◽  
Transition Rates ◽  
Electronic Circuits ◽  
Hybrid Polymers ◽  
Organic Hybrid ◽  
Wide Range ◽  
Polymer Electronics ◽  
Organic Functional Groups ◽  
Inorganic Content

AbstractFor applications in polymer electronics, suitable passivation coatings are searched for. Inorganic-organic hybrid polymers (ORMOCER®.s) have proven to be tunable in a wide range with respect to their physical properties. Their synthesis can be controlled such that the resulting materials show very low water vapor transition rates (WVTR) which is one of the most important key properties for passivation applications. Besides, ORMOCER®.s can be patterned by UV lithography due to their organic functional groups thus yielding the possibility of selectively passivate electronic circuits. Typical WVTR values which have been achieved so far for individual thin-film layers range between approximately 1 and 5 g/m2d (calculated for 100 μm layer thickness). The passivation properties will be discussed with respect to variations of the inorganic content and to the network formed upon processing.

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