Synthesis of Organosilicate Gels by Non-Hydrolytic Reactions of Silicon Acetate
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F13%3A00069404" target="_blank" >RIV/00216224:14740/13:00069404 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Synthesis of Organosilicate Gels by Non-Hydrolytic Reactions of Silicon Acetate
Original language description
A non-hydrolytic sol-gel synthesis of new mesoporous organosilicate materials containing phenolic and bisphenolic structural motifs was developed. Xerogels are formed in polycondensation reactions of multifunctional phenols, such as hydroquinone, 4,4-dihydroxybiphenyl, bisphenol A, and phloroglucinol with silicon acetate in polar ether solvent. Acetic acid was identified as an elimination reaction byproduct. Xerogels were obtained upon drying in vacuo and the produced materials contain residual acetoxyand phenolic hydroxyl groups allowing for later grafting and surface modification. An impact of employed spacer molecule and reaction conditions on the degree of condensation and xerogel porosity was studied. Condensation degree was established by gravimetric techniques and appears to be independent of reaction temperature but strongly depends on the nature of the spacer molecule. Hydroquinone provided gels with the highest value of 91%.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů