2096-99-3Relevant articles and documents
POLYMERIZABLE MONOMER SUITABLE FOR DENTAL MATERIAL, AND DENTAL COMPOSITION BASED ON THE SAME
-
Paragraph 0123; 0126, (2019/07/25)
PROBLEM TO BE SOLVED: To provide a polymerizable monomer useful for a dental composite resin which has small polymerization shrinkage in curing, excellent operability, excellent mechanical strength of cured products, and a thermal expansion coefficient co
Catalytic oxidation of diorganosilanes to 1,1,3,3-tetraorganodisiloxanes with gold nanoparticle assembly at the water-chloroform interface
Shankar, Ravi,Sharma, Asmita,Jangir, Bhawana,Chaudhary, Manchal,Kociok-K?hn, Gabriele
, p. 813 - 819 (2019/01/09)
The formation of the spherical self-assembly of gold nanoparticles (AuNPs) of 200 ± 20 nm size at the water-chloroform interface is achieved by employing the cyclotetrasiloxane [RSCH2CH2SiMeO]4 (R = CH2CH2OH) as the stabilizing ligand. The interfacially stabilized AuNPs act as a versatile catalyst for selective hydrolytic oxidation of only one of the Si-H bonds in secondary organosilanes, RR1SiH2 (R, R1 = alkyl, aryl, and sila-alkyl), to afford the high yield synthesis of 1,1,3,3-tetraorganodisiloxanes, (HRR1Si)2O. The study unravels for the first time the role of the photothermal effect arising from the excitation of the surface plasmon resonance of the AuNPs under visible light irradiation in enhancing the catalytic activity at ambient temperature.