Optically recoverable, deep ultraviolet (UV) stable and transparent sol–gel fluoro siloxane hybrid material for a UV LED encapsulant

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 26826-26834 ◽  
Author(s):  
Jun-Young Bae ◽  
Hwea-Yoon Kim ◽  
Young-Woo Lim ◽  
Yoon-Hyeok Kim ◽  
Byeong-Soo Bae
Keyword(s):  
Hybrid Material ◽  
Sol Gel ◽  
Hydrosilylation Reaction ◽  
Uv Led ◽  
Deep Ultraviolet ◽  
Deep Uv ◽  
Siloxane Hybrid Material

A UV transparent and stable fluoro-siloxane hybrid material was prepared for a deep UV-LED encapsulant. The hybrimer was fabricated by hydrosilylation reaction of vinyl-fluoro oligosiloxane resin.

Ultraviolet Light Stable and Transparent Sol–Gel Methyl Siloxane Hybrid Material for UV Light-Emitting Diode (UV LED) Encapsulant

2015 ◽  
Vol 7 (2) ◽  
pp. 1035-1039 ◽  
Author(s):  
Jun-young Bae ◽  
YongHo Kim ◽  
HweaYoon Kim ◽  
YuBae Kim ◽  
Jungho Jin ◽  
...  
Keyword(s):  
Ultraviolet Light ◽  
Hybrid Material ◽  
Uv Light ◽  
Light Emitting Diode ◽  
Sol Gel ◽  
Light Emitting ◽  
Uv Led ◽  
Siloxane Hybrid Material

Photo-curable siloxane hybrid material fabricated by a thiol–ene reaction of sol–gel synthesized oligosiloxanes

2011 ◽  
Vol 47 (21) ◽  
pp. 6051 ◽  
Author(s):  
Joon-Soo Kim ◽  
SeungCheol Yang ◽  
HyungJin Park ◽  
Byeong-Soo Bae
Keyword(s):  
Hybrid Material ◽  
Sol Gel ◽  
Ene Reaction ◽  
Siloxane Hybrid Material

Evaluations of a Novel Bioactive and Degradable Poly(Ɛ-Caprolactone) Hybrid Material Containing Silanol Group and Calcium Salt as a Bone Substitute

2005 ◽  
Vol 284-286 ◽  
pp. 717-720 ◽  
Author(s):  
Sang Hoon Rhee ◽  
Yong Keun Lee ◽  
Bum Soon Lim ◽  
Jae Il Lee ◽  
Jeong Joon Yoo ◽  
...  
Keyword(s):  
Hybrid Material ◽  
Bone Substitute ◽  
Calcium Salt ◽  
Sol Gel ◽  
Silanol Group ◽  
Bone Graft Substitute ◽  
Apatite Formation ◽  
Siloxane Hybrid Material

Bioactive poly(e-caprolactone)-siloxane hybrid material was newly developed and its in vitro and in vivo evaluations were made for the potential application as a bone substitute. The polymer precursor, triethoxysilane end capped poly(e-caprolactone) was prepared by the reaction with a,w-hydroxyl poly(e-caprolactone) and 3-isocyanatopropyl triethoxysilane with 1,4-diazabicyclo [2,2,2] octane as a catalyst and toluene as a solvent. The triethoxysilane end capped poly(e-caprolactone) was hydrolyzed and condensed to yield a hybrid sol-gel material. The gelation was carried out for 1 week at ambient condition in a covered Teflon mold with a few pinholes and then dried under vacuum at room temperature for 48 h. Its bioactivity was evaluated by examining the apatite formation on its surface in the SBF and its osteoconductivity was assessed in the tibia of white rabbit. The hybrid material showed apatite-forming ability in the SBF within 1 week soaking. Besides, new bone was formed on the surface of a cylindrical shaped specimen with no histologically demonstrable intervening non-osseous tissue after 6 weeks implantation. There was no evidence of inflammation or foreign body reaction. From the results, it can be concluded that this newly developed hybrid material has osteoconductivity and is likely to be used for the application as a bone graft substitute.

Development of Silicon Wafer Packaging Technology for Deep UV LED

2020 ◽  
Vol 140 (7) ◽  
pp. 152-157
Author(s):  
Hirofumi Chiba ◽  
Yukio Suzuki ◽  
Yoshiaki Yasuda ◽  
Mitsuyasu Kumagai ◽  
Takaaki Koyama ◽  
...  
Keyword(s):  
Silicon Wafer ◽  
Packaging Technology ◽  
Uv Led ◽  
Deep Uv

PULSED UV IRRADIATION USING DEEP UV-LED FOR INACTIVATION OF ESCHERICHIA COLI

2019 ◽  
Vol 75 (7) ◽  
pp. III_91-III_96
Author(s):  
Tomoyasu SADO ◽  
Kumiko OGUMA ◽  
Takashi HASHIMOTO ◽  
Shinobu KAZAMA ◽  
Satoshi TAKIZAWA
Keyword(s):  
Escherichia Coli ◽  
Uv Irradiation ◽  
Uv Led ◽  
Deep Uv

scholarly journals Photocrosslinking and photopatterning of magneto-optical nanocomposite sol–gel thin film under deep-UV irradiation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
C. Bidaud ◽  
D. Berling ◽  
D. Jamon ◽  
E. Gamet ◽  
S. Neveu ◽  
...  
Keyword(s):  
Uv Irradiation ◽  
Cobalt Ferrite ◽  
Sol Gel ◽  
Optical Devices ◽  
High Concentration ◽  
Nanocomposite Thin Films ◽  
Deep Uv ◽  
High Concentrations ◽  
193 Nm ◽  
The Impact

AbstractThis paper is aimed at investigating the process of photocrosslinking under Deep-UV irradiation of nanocomposite thin films doped with cobalt ferrite magnetic nanoparticles (MNPs). This material is composed of a hybrid sol–gel matrix in which MNP can be introduced with high concentrations up to 20 vol%. Deep-UV (193 nm) is not only interesting for high-resolution patterning but we also show an efficient photopolymerization pathway even in the presence of high concentration of MNPs. In this study, we demonstrate that the photocrosslinking is based on the free radical polymerization of the methacrylate functions of the hybrid precursor. This process is initiated by Titanium-oxo clusters. The impact of the nanoparticles on the photopolymerization kinetic and photopatterning is investigated. We finally show that the photosensitive nanocomposite is suitable to obtain micropatterns with sub-micron resolution, with a simple and versatile process, which opens many opportunities for fabrication of miniaturized magneto-optical devices for photonic applications.

scholarly journals III-Nitride Deep UV LED Without Electron Blocking Layer

2019 ◽  
Vol 11 (2) ◽  
pp. 1-11 ◽  
Author(s):  
Zhongjie Ren ◽  
Yi Lu ◽  
Hsin-Hung Yao ◽  
Haiding Sun ◽  
Che-Hao Liao ◽  
...  
Keyword(s):  
Blocking Layer ◽  
Electron Blocking Layer ◽  
Uv Led ◽  
Deep Uv

Growth and theoretical study on the deep-ultraviolet transparent β-CsBa2(PO3)5 nonlinear optical crystal

CrystEngComm ◽  
2019 ◽  
Vol 21 (32) ◽  
pp. 4690-4695 ◽  
Author(s):  
Yang Zhong ◽  
Pai Shan ◽  
Tongqing Sun ◽  
Zhenpeng Hu ◽  
Hongde Liu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Nonlinear Optical ◽  
Theoretical Study ◽  
Nonlinear Optical Crystal ◽  
Deep Ultraviolet ◽  
Deep Uv ◽  
Optical Crystal

A single crystal of β-CsBa2(PO3)5 has been successfully grown, and it exhibits a remarkable deep-UV cutoff edge of 168 nm.

Metal supported catalysts obtained by sol-gel in the hydrosilylation of phenylacetylene with R3SiH organosilanes (R3 = Ph3, Ph2Me, and PhMe2)

2000 ◽  
Vol 78 (11) ◽  
pp. 1491-1495 ◽  
Author(s):  
Rafael Jiménez ◽  
Juan Manuel López ◽  
Jorge Cervantes
Keyword(s):  
Specific Activity ◽  
Supported Catalysts ◽  
Sol Gel ◽  
Synthetic Route ◽  
Catalytic Systems ◽  
Hydrosilylation Reaction ◽  
Solid Catalysts ◽  
Sol Gel Process ◽  
Cis And Trans ◽  
Inorganic Matrices

The hydrosilylation reaction of phenylacetylene, generated on the surface of solid catalysts (such as Pt and Ru) supported on inorganic matrices such as MgO obtained by the sol-gel process, yields vinylsilanes as the main products. The products' distribution, specific activity, and turnover reactions were determined for the case of the hydrosilylation reaction of PhC = CH with R3SiH (R = Ph3, Ph2Me, and PhMe2). For Ph3SiH and Ph2MeSiH, the presence of β-trans and α isomers is observed. Addition of PhMe2SiH to phenylacetylene leads to the formation of β (cis and trans) and α isomers. These catalytic systems provide a new synthetic route to Si—C bond formation.Key words: Vinylsilanes, sol-gel catalysts, hydrosilylation and phenylacetylene.

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