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Yifan Liu

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Research paper thumbnail of PbS/Polymer Nanocomposite Optical Materials with High Refractive Index

Chemistry of Materials, 2005

... PbS nanoparticles can be formed in DMSO after treatment with H 2 S. TEM studies indicated tha... more ... PbS nanoparticles can be formed in DMSO after treatment with H 2 S. TEM studies indicated that the PbS nanoparticles were smaller than 10 nm and aggregated seriously in DMSO. ... Formation of PbS Nanoparticles in DMSO Solution. ...

Research paper thumbnail of Transparent and stable photoluminescent sol–gel hybrid films by incorporating surface modified ZnO nanocrystals

Thin Solid Films, 2008

We demonstrate the use of proper surface modification with (3-Glycidyloxypropyl) trimethoxysilane... more We demonstrate the use of proper surface modification with (3-Glycidyloxypropyl) trimethoxysilane (GLYMO) to improve the stability of colloidal ZnO nanocrystals (NCs) and then incorporate the NCs into a silica-titania sol to prepare transparent and photoluminescent hybrid thin film. GLYMO acts as not only the stabilizer of ZnO NCs but also a component of the substrate sol. Detailed investigations reveal that the resultant photoluminescent hybrid films possess long-term stability, high optical transparency and excellent surface smoothness, and have potential use as flat panel displays, phosphor materials and light-emitting devices.

Research paper thumbnail of High refractive index organic–inorganic hybrid coatings with TiO 2 nanocrystals

Colloids and Surfaces A-physicochemical and Engineering Aspects, 2008

High refractive index hybrid coatings were prepared by directly incorporating anatase titania (Ti... more High refractive index hybrid coatings were prepared by directly incorporating anatase titania (TiO 2 ) nanocrystals (NCs) into (3-glycidyloxypropyl) trimethoxysilane organic silica sol followed by a sol-gel process. The anatase TiO 2 NCs were prepared by controlling hydrolysis of titanium alkoxide in acid solution, and they show a narrow size distribution centered at about 4 nm and very good dispersibility in the silica sol. After doped with TiO 2 , the coatings possessed excellent surface smoothness and high optical transparency in the visible range. The refractive index at 632.8 nm increased from 1.502 to 1.663 as the TiO 2 weight content goes from 10% to 50%. Besides, the hybrid coatings also had good thermal stability and high hardness of 3H, which have promising application in antireflection coatings.

Research paper thumbnail of Preparation and properties of transparent bulk polymer nanocomposites with high nanophase contents

Journal of Materials Chemistry, 2008

RSC Publishing Logo View PDF VersionView Previous ArticleView Next Article DOI:10.1039/B803237H (... more RSC Publishing Logo View PDF VersionView Previous ArticleView Next Article DOI:10.1039/B803237H (Paper) J. Mater. Chem., 2008, 18, 4062-4068. Preparation and properties of transparent bulk polymer nanocomposites with high nanophase contents. ...

Research paper thumbnail of PbS/Polymer Nanocomposite Optical Materials with High Refractive Index

Chemistry of Materials, 2005

... PbS nanoparticles can be formed in DMSO after treatment with H 2 S. TEM studies indicated tha... more ... PbS nanoparticles can be formed in DMSO after treatment with H 2 S. TEM studies indicated that the PbS nanoparticles were smaller than 10 nm and aggregated seriously in DMSO. ... Formation of PbS Nanoparticles in DMSO Solution. ...

Research paper thumbnail of Transparent and stable photoluminescent sol–gel hybrid films by incorporating surface modified ZnO nanocrystals

Thin Solid Films, 2008

We demonstrate the use of proper surface modification with (3-Glycidyloxypropyl) trimethoxysilane... more We demonstrate the use of proper surface modification with (3-Glycidyloxypropyl) trimethoxysilane (GLYMO) to improve the stability of colloidal ZnO nanocrystals (NCs) and then incorporate the NCs into a silica-titania sol to prepare transparent and photoluminescent hybrid thin film. GLYMO acts as not only the stabilizer of ZnO NCs but also a component of the substrate sol. Detailed investigations reveal that the resultant photoluminescent hybrid films possess long-term stability, high optical transparency and excellent surface smoothness, and have potential use as flat panel displays, phosphor materials and light-emitting devices.

Research paper thumbnail of High refractive index organic–inorganic hybrid coatings with TiO 2 nanocrystals

Colloids and Surfaces A-physicochemical and Engineering Aspects, 2008

High refractive index hybrid coatings were prepared by directly incorporating anatase titania (Ti... more High refractive index hybrid coatings were prepared by directly incorporating anatase titania (TiO 2 ) nanocrystals (NCs) into (3-glycidyloxypropyl) trimethoxysilane organic silica sol followed by a sol-gel process. The anatase TiO 2 NCs were prepared by controlling hydrolysis of titanium alkoxide in acid solution, and they show a narrow size distribution centered at about 4 nm and very good dispersibility in the silica sol. After doped with TiO 2 , the coatings possessed excellent surface smoothness and high optical transparency in the visible range. The refractive index at 632.8 nm increased from 1.502 to 1.663 as the TiO 2 weight content goes from 10% to 50%. Besides, the hybrid coatings also had good thermal stability and high hardness of 3H, which have promising application in antireflection coatings.

Research paper thumbnail of Preparation and properties of transparent bulk polymer nanocomposites with high nanophase contents

Journal of Materials Chemistry, 2008

RSC Publishing Logo View PDF VersionView Previous ArticleView Next Article DOI:10.1039/B803237H (... more RSC Publishing Logo View PDF VersionView Previous ArticleView Next Article DOI:10.1039/B803237H (Paper) J. Mater. Chem., 2008, 18, 4062-4068. Preparation and properties of transparent bulk polymer nanocomposites with high nanophase contents. ...

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