Kucuk, Asuman C.; Matsui, Jun; Miyashita, Tokuji published an article in 2012, the title of the article was Proton-conducting electrolyte film of double-decker-shaped polyhedral silsesquioxane containing covalently bonded phosphonic acid groups.Synthetic Route of 929-37-3 And the article contains the following content:
As described phosphonic-acid-containing double-decker polyhedral silsesquioxane (PHOS-DDSQ) was synthesized and the p conductivity of the PHOS-DDSQ cast film was studied under humid and non-humid conditions. To synthesize PHOS-DDSQ, double-decker-shaped polyhedral silsesquioxane (DDSQ) was reacted with di(ethylene glycol) (DEG) vinyl ether using hydrosilylation reaction to attach 4 DEG units to one DDSQ (4DEG-DDSQ). Subsequently, a phosphate esterification of hydroxyl groups in 4DEG-DDSQ was carried out using POCl3. NMR, XPS, and MALDI-TOF MS spectra and titration measurements revealed that the phosphate esterification connected 2 DEG units to form a crown-ether-like structure. This structure prevents hydrolysis of the phosphate ester bond. PHOS-DDSQ showed high thermal stability, with decomposition temperature exceeding 220°, because of its inorganic DDSQ core. A uniform film of PHOS-DDSQ can be fabricated by drop casting. The cast film showed high p conductivity (0.12 S/cm) under humid conditions, which is comparable to that of a Nafion membrane. Also, the cast film offered good p conductivity under non-humid conditions (3.6 × 10-4 S/cm at 170°). The conductivity and thermal stability indicate that PHOS-DDSQ is a good candidate for use as a p-conductive membrane in hydrated type fuel cells as well as fuel cells operated at intermediate temperatures (100-200°) under non-humid conditions. The experimental process involved the reaction of 2-(2-(Vinyloxy)ethoxy)ethanol(cas: 929-37-3).Synthetic Route of 929-37-3
The Article related to proton conductor electrolyte silsesquioxane phosphonate fuel cell, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Synthetic Route of 929-37-3
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