Impact of curing condition on chemical stability of ultralow-k PMO material.

2012 ◽  
Vol 1428 ◽  
Author(s):  
M. B. Krishtab ◽  
L. Zhang ◽  
Q. T. Le ◽  
K. Vanstreels ◽  
L. Souriau ◽  
...  
Keyword(s):  
Thermal Annealing ◽  
Chemical Stability ◽  
Mesoporous Material ◽  
Periodic Mesoporous Organosilica ◽  
Mesoporous Organosilica ◽  
Ring Structures ◽  
Curing Condition ◽  
New Generation ◽  
Low K ◽  
Stable Material

ABSTRACTIn this work a new generation of periodic mesoporous organosilica (PMO) low-k dielectrics with targeted k-values 2.0 and 1.8 is evaluated. In addition, impact of two different curing processes on properties of the mesoporous material is analyzed. It is shown that removal of templating organics with thermal annealing leads to formation of mechanically robust and chemically very stable material, while application of UV-assisted curing with broadband lamp (λ > 200 nm) causes pronounced decrease of film ability to sustain in diluted HF solution. The explanation of that phenomenon is given in terms of silica-ring structures formed within organosilica skeleton.

scholarly journals 2D Mesoporous Channels of PMO; a Platform for Cluster-Like Pt Synthesis and Catalytic Activity in Nitrophenol Reduction

Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 167 ◽  
Author(s):  
Mohamed Esmat ◽  
Hamed Mohtasham ◽  
Yasser GadelHak ◽  
Reza Tarbiat Mehrebani ◽  
Rafat Tahawy ◽  
...  
Keyword(s):  
Mesoporous Material ◽  
Room Temperature ◽  
Aqueous Media ◽  
Pt Nanoparticles ◽  
Reduction Reaction ◽  
Periodic Mesoporous Organosilica ◽  
High Tunability ◽  
Mesoporous Organosilica ◽  
Efficient Reduction ◽  
Nitrophenol Reduction

Thiourea-bridged organosiloxane is used to synthesize a periodic mesoporous organosilica (PMO). Since this PMO has an S-enriched surface, owing to thiourea functional groups, it exhibits strong coordination toward Pt ions, and it shows a high tunability in the Pt nanoparticles size. This hybrid mesoporous material is employed as a catalyst in the efficient reduction reaction of 4-nitrophenol to 4-aminophenol at room temperature in an aqueous media.

Tuning the Properties of Periodic Mesoporous Organosilica Films for Low‐k Application by Gemini Surfactants

ChemPhysChem ◽  
2018 ◽  
Vol 19 (18) ◽  
pp. 2295-2298
Author(s):  
Murad Redzheb ◽  
Oguzhan Orkut Okudur ◽  
Sigrid Bernstorff ◽  
Krunoslav Juraic ◽  
Pascal Van Der Voort ◽  
...  
Keyword(s):  
Gemini Surfactants ◽  
Periodic Mesoporous Organosilica ◽  
Mesoporous Organosilica ◽  
Low K

Charge transport mechanism in periodic mesoporous organosilica low-k dielectric

2019 ◽  
Vol 115 (8) ◽  
pp. 082904 ◽  
Author(s):  
A. A. Gismatulin ◽  
V. A. Gritsenko ◽  
D. S. Seregin ◽  
K. A. Vorotilov ◽  
M. R. Baklanov
Keyword(s):  
Charge Transport ◽  
Transport Mechanism ◽  
Charge Transport Mechanism ◽  
Periodic Mesoporous Organosilica ◽  
Mesoporous Organosilica ◽  
Low K

Nanopore engineered tortuosity towards thermo-mechanically enhanced low-k polymer-mesoporous organosilica composite membranes

2021 ◽  
pp. 108854
Author(s):  
Md A. Wahab ◽  
Chaobin He ◽  
Tariq Altalhi ◽  
Munirah D. Albaqami ◽  
Zeid A. Alothman ◽  
...  
Keyword(s):  
Composite Membranes ◽  
Mesoporous Organosilica ◽  
Low K

Light-harvesting photocatalysis for H2 evolution by methylacridone-bridged periodic mesoporous organosilica

2021 ◽  
Vol 287 ◽  
pp. 119965
Author(s):  
Yasutomo Goto ◽  
Ken-ichi Yamanaka ◽  
Masataka Ohashi ◽  
Yoshifumi Maegawa ◽  
Shinji Inagaki
Keyword(s):  
Light Harvesting ◽  
H2 Evolution ◽  
Periodic Mesoporous Organosilica ◽  
Mesoporous Organosilica

Controlled PEGylation of periodic mesoporous organosilica nanospheres for improving their stability in physiological solutions

2019 ◽  
Vol 30 (4) ◽  
pp. 929-932 ◽  
Author(s):  
Xiaodan Su ◽  
Jun Tao ◽  
Qing Wang ◽  
Peng Xu ◽  
Wei Luo ◽  
...  
Keyword(s):  
Periodic Mesoporous Organosilica ◽  
Mesoporous Organosilica

Chemical sensors based on nano-sized lanthanide-grafted periodic mesoporous organosilica hybrid materials

2019 ◽  
Vol 7 (26) ◽  
pp. 8109-8119 ◽  
Author(s):  
Anna M. Kaczmarek ◽  
Pascal Van Der Voort
Keyword(s):  
Hybrid Materials ◽  
Chemical Sensors ◽  
Aprotic Solvent ◽  
Periodic Mesoporous Organosilica ◽  
Ion Sensing ◽  
Mesoporous Organosilica

Nano-sized PMOs grafted with lanthanides show selective ion sensing for Pb2+ and Cr3+ and strong solvatochromism allowing their use as protic and aprotic solvent sensors.

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