Recyclable Dirhodium Catalysts Embedded in Nanoporous Surface-Functionalized Organosilica Hosts for Carbenoid-Mediated Cyclopropanation Reactions

ChemCatChem ◽  
2010 ◽  
Vol 2 (11) ◽  
pp. 1461-1466 ◽  
Author(s):  
Evgeny V. Dikarev ◽  
D. Krishna Kumar ◽  
Alexander S. Filatov ◽  
Abhishek Anan ◽  
Youwei Xie ◽  
...  
Keyword(s):  
Nanoporous Surface ◽  
Dirhodium Catalysts

Nanoporous Surface Wetting Behavior: The Line Tension Influence

Langmuir ◽  
2012 ◽  
Vol 28 (30) ◽  
pp. 11064-11071 ◽  
Author(s):  
V. Raspal ◽  
K. O. Awitor ◽  
C. Massard ◽  
E. Feschet-Chassot ◽  
R. S. P. Bokalawela ◽  
...  
Keyword(s):  
Line Tension ◽  
Surface Wetting ◽  
Wetting Behavior ◽  
Nanoporous Surface

Fe-based metallic glass catalyst with nanoporous surface for azo dye degradation

Chemosphere ◽  
2017 ◽  
Vol 174 ◽  
pp. 76-81 ◽  
Author(s):  
Z. Deng ◽  
X.H. Zhang ◽  
K.C. Chan ◽  
L. Liu ◽  
T. Li
Keyword(s):  
Metallic Glass ◽  
Azo Dye ◽  
Dye Degradation ◽  
Nanoporous Surface

Nanoporous Surface Modifications through Dealloying of Al-Ti Alloy

2017 ◽  
Vol 19 (7) ◽  
pp. 1600866
Author(s):  
Wei Zhao ◽  
Nianqi Liu ◽  
Jiacheng Rong ◽  
Lei E ◽  
Dan Zhao
Keyword(s):  
Surface Modifications ◽  
Ti Alloy ◽  
Nanoporous Surface

Enhancement of osseointegration by direct coating of rhBMP-2 on target-ion induced plasma sputtering treated SLA surface for dental application

2016 ◽  
Vol 31 (6) ◽  
pp. 807-818 ◽  
Author(s):  
Sungwon Kim ◽  
Cheonil Park ◽  
Byeong-Seok Moon ◽  
Hyoun-Ee Kim ◽  
Tae-Sik Jang
Keyword(s):  
Surface Structure ◽  
Bone Morphogenetic Proteins ◽  
Nanoporous Structure ◽  
Contact Ratio ◽  
Surface Geometry ◽  
Plasma Sputtering ◽  
Quantitative Results ◽  
Nanoporous Surface ◽  
Recombinant Human Bone

Owing to the excellent bioactive properties of recombinant human bone morphogenetic proteins (rhBMPs), dentistry considers them as a fascinating adjuvant alternative for enhancing bone regeneration and bone-to-implant junction in the early implantation stages. However, stable loading and delivery efficiency of rhBMPs on the implant surfaces involve major concerns because of the harsh wearing condition under load during implantation. In this study, to achieve successful rhBMP-2 delivery, a nanoporous surface structure is introduced on the sandblasting with large grit and acid-etching (SLA)-treated titanium (Ti) surface via the tantalum (Ta) target-ion induced plasma sputtering (TIPS) technique. Unlike oxidation-induced surface nanoporous fabrications on a Ti surface, TIPS-treated surfaces provide excellent structural unity of the nanoporous structure with the substrate due to their etching-based fabrication mechanism. SLA/TIPS-treated Ti exhibits distinct nanoporous structures on the microscale surface geometry and better hydrophilicity compared with SLA-treated Ti. A sufficiently empty nanoporous surface structure combined with the hydrophilic property of SLA/TIPS-treated Ti facilitates the formation of a thick and uniform coating layer of rhBMP-2 on the surface without any macro- and microcoagulation. Compared with the SLA-treated Ti surface, the amount of coated rhBMP-2 increases up to 63% on the SLA/TIPS-treated Ti surface. As a result, the in vitro pre-osteoblast cell response of the SLA/TIPS-treated Ti surface, especially cell adhesion and differentiation behaviors, improves remarkably. A bone-regenerating direct comparison between the rhBMP-2-coated SLA-treated and SLA/TIPS-treated Ti is conducted on a defective dog mandible model. After 8 weeks of implantation surgery, SLA/TIPS-treated Ti with rhBMP-2 exhibits a better degree of contact area for the implanted bone, which mineralizes new bones around the implant. Quantitative results of bone-in-contact ratio and new bone volume also show significantly higher values for the SLA/TIPS-treated Ti with the rhBMP-2 specimen. These results confirm that an SLA/TIPS-treated surface is a suitable rhBMP-2 carrier for a dental implant to achieve early and strong osseointegration of Ti dental implants.

Nanoporous Materials Integration Into Advanced Microprocessors

2005 ◽  
Vol 863 ◽  
Author(s):  
E. Todd Ryan ◽  
Cathy Labelle ◽  
Satya Nitta ◽  
Nicholas C.M. Fuller ◽  
Griselda Bonilla ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Nanoporous Materials ◽  
Plasma Damage ◽  
Interlayer Dielectric ◽  
Materials Integration ◽  
Nanoporous Films ◽  
Organosilicate Glass ◽  
Barrier Metal ◽  
Metal Liner ◽  
Nanoporous Surface

AbstractFuture microprocessor technologies will require interlayer dielectric (ILD) materials with a dielectric constant (κ-value) less than 2.5. Organosilicate glass (OSG) materials must be nanoporous to meet this demand. However, the introduction of nanopores creates many integration challenges. These challenges include 1) integrating nanoporous films with low mechanical strength into conventional process flows, 2) managing etch profiles, 3) processinduced damage to the nanoporous ILD, and 4) controlling the metal/nanoporous ILD interface. This paper reviews research to maximize mechanical strength by engineering optimal pore structures, controlling trench bottom roughness induced by etching and understanding its relationship to pore size, repairing plasma damage using silylation chemistry, and sealing a nanoporous surface for barrier metal (liner) deposition.

Transparent Sn-doped In2O3 electrodes with a nanoporous surface for enhancing the performance of perovskite solar cells

2019 ◽  
Vol 418 ◽  
pp. 152-161 ◽  
Author(s):  
Jae-Ho Kim ◽  
Tae-Yeon Seong ◽  
Kwun-Bum Chung ◽  
Chan Su Moon ◽  
Jun Hong Noh ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Nanoporous Surface

Chiral dirhodium catalysts derived from l-serine, l-threonine and l-cysteine: design, synthesis and application

2015 ◽  
Vol 2 (8) ◽  
pp. 890-907 ◽  
Author(s):  
Jian Kang ◽  
Baofu Zhu ◽  
Jiewei Liu ◽  
Bo Wang ◽  
Li Zhang ◽  
...  
Keyword(s):  
Transfer Reactions ◽  
Chiral Catalysts ◽  
Design Synthesis ◽  
Carbene Transfer ◽  
Dirhodium Complexes ◽  
Dirhodium Catalysts

A series of dirhodium complexes were synthesized and found to be effective chiral catalysts for nitrene and carbene transfer reactions.

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