81416-37-7Relevant articles and documents
Synthesis of triphenylsulfonium triflate bound copolymer for electron beam lithography
Kwon, Ojung,Sagar, Ashok D.,Kang, Ha Na,Kim, Hyun-Mi,Kim, Ki-Bum,Lee, Haiwon
, p. 6270 - 6273 (2014)
Photoacid generator (PAG) has been widely used as a key component in photoresist for highresolution patterning with high sensitivity. A novel acrylic monomer, triphenylsulfonium salt methyl methacrylate (TPSMA), was synthesized and includes triphenylsulfonium triflate as a PAG. The poly(MMA-co-TPSMA) (PMT) as a polymer-bound PAG was synthesized with methyl methacrylate (MMA) and TPSMA for electron beam lithography. Characterization of PMT was carried out by NMR and FTIR. The molecular weight was analyzed by GPC. Thermal properties were studied using TGA and DSC. Thecharacterization results were in good agreement with corresponding chemical compositions and thermal stability. PMT was subsequently employed in electron beam lithography and its lithographic performance was confirmed by FE-SEM. This PMT was accomplished to improve the lithographic performance including sensitivity, line width roughness (LWR) and resolution. We found that PMT was capable of 20 nm negative tone patterns with better sensitivity than hydrogensilsesquioxane (HSQ) which is a conventional negative tone resist. Copyright
Sonogashira reaction using arylsulfonium salts as cross-coupling partners
Tian, Ze-Yu,Wang, Shi-Meng,Jia, Su-Jiao,Song, Hai-Xia,Zhang, Cheng-Pan
supporting information, p. 5454 - 5457 (2017/11/06)
Triarylsulfonium, alkyl- and fluoroalkyl(diaryl)-sulfonium, and aryl(dialkyl)sulfonium triflates are successfully used as a new family of cross-coupling participants in the Sonogashira reaction as aryldiazonium, diaryliodonium, and tetraphenylphosphonium salts. It was found that terminal alkynes reacted mildly with triarylsulfonium or (2,2,2-trifluoroethyl)diphenylsulfonium triflate at room temperature under Pdand Cu-cocatalysis to give the corresponding arylalkynes in up to >99% yield. This protocol represents the first use of arylsulfonium salts as cross-coupling partners in the Pd/Cu-catalyzed Sonogashira reaction.
Sulfonium salt and its manufacturing method
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, (2008/06/13)
This invention relates to a sulfonium salt, including its manufacturing method, which is effectively used as a photoacid initiator or radical photoinitiator during polymerization and a photoacid generator, leaving the protection groups of organic compound