Surface Modification of Novel Organic-Inorganic Hybrid Dielectrics Using Self-Assembled Monolayers

2007 ◽  
Vol 124-126 ◽  
pp. 295-298
Author(s):  
Sun Ho Jeong ◽  
Dong Jo Kim ◽  
Sul Lee ◽  
Bong Kyun Park ◽  
Joo Ho Moon

Using a thermally-crosslinkable organosiloxane-based organic-inorganic hybrid material, solution-processable gate dielectric layer for organic thin-film transistors (OTFTs) have been fabricated. The hybrid dielectric was synthesized by the sol-gel process. The surface of the prepared dielectric was modified by self-assembled monolayers (SAMs) treatment using wet chemical method. Prior to surface modification, the chemical inertness of prepared dielectric was investigated by immersing into various solvents such as toluene, acetone, isopropyl alcohol, and DI-water. The existence of SAMs on the surface of dielectric was confirmed by measuring current density-electric field characteristics and it was observed that surface morphology of SAMs-treated hybrid dielectric was very smooth.

2004 ◽  
Vol 847 ◽  
Author(s):  
Sébastien Anthérieu ◽  
Florence Brodard-Séverac ◽  
Gilles Guerrero ◽  
P. Hubert Mutin

ABSTRACTTitania particles (P25 DEGUSSA AG) were treated by a solution of 12-mercaptododecyl-phosphonic acid (MDPA) in toluene to obtain an organic-inorganic hybrid material with thiol functions at the surface. This material was characterized by chemical analysis, solid state 31P MAS NMR and FTIR spectroscopies, and XPS. Reaction of the phosphonic acid end of MDPA with the TiO2 surface led to the formation of a relatively dense and well-ordered self-assembled monolayer (SAM), with a density of about 3.9 SH functions per nm2. This material was tested for the extraction of mercury in water at pH 7, 9, and 11. Chemical analysis indicated no loss of SH functionality, even at pH 11. The best extraction results were obtained at pH 9 and 11, with a metal extraction ability between 85 and 90%.


Author(s):  
Jayasheelan Vaithilingam ◽  
Ruth D. Goodridge ◽  
Steven D. R. Christie ◽  
Steve Edmondson ◽  
Richard J. M. Hague

RSC Advances ◽  
2015 ◽  
Vol 5 (79) ◽  
pp. 64471-64477 ◽  
Author(s):  
Yan Yan ◽  
Ye Zhou ◽  
Long-Biao Huang ◽  
Su-Ting Han ◽  
Li Zhou ◽  
...  

Chemical vapor deposition (CVD) is utilized to form self-assembled monolayers on polymeric insulators. Ultraviolet/ozone (UVO) treatment is used to enhance the alignment of HMDS monolayer on polymeric insulator surface and a time dependent effect is observed for UVO.


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