Effective synthesis of fluorofunctional (poly)siloxanes

Abstract

Efektywna synteza fluorofunkcyjnych (poli)siloksanówStreszczenie -Przeprowadzono badania nad syntez¹ fluorofunkcyjnych polisiloksanów opart¹ na procesach hydrosililowania fluorowanych eterów allilowych, których prekursorami by³y alkohole fluorowane. Porównano aktywnooeae katalityczn¹ kompleksów platyny i rodu w badanej reakcji i wyselekcjonowano najbardziej aktywny, bazuj¹cy na siloksylowym kompleksie rodu. Przeprowadzono tak¿e immobilizacjê wybranego kompleksu za pomoc¹ czterech ró¿nych cieczy jonowych i porównano aktywnooeae katalityczn¹ wytworzonych uk³adów, w wielokrotnie powtórzonym cyklu reakcyjnym, przy u¿yciu takiej samej porcji katalizatora. S³owa kluczowe: polisiloksany, fluoropolimery, hydrosililowanie, ciecze jonowe, immobilizacja. EFFECTIVE SYNTHESIS OF FLUOROFUNCTIONAL (POLY)SILOXANESSummary -Synthesis of fluorofunctional polysiloxanes based on hydrosilylation of fluoroalkyl ethers (precursors of the latter were fluoro alcohols) was studied. The most active catalyst, based on rhodium siloxide complex, was selected on the ground of a comparison of the catalytic performance of platinum and rhodium complexes. The rhodium complex was immobilized in four different ionic liquids and catalytic activities of the obtained systems were compared, while performing multiple reaction runs with the use of the same portion of catalyst.

Synthesis of an Open‐Cage Structure POSS Containing Various Functional Groups and Their Effect on the Formation and Properties of Langmuir Monolayers

“…[27] 1,3,5,7,9,11,14-Heptaisobutyltricyclo[7.3.3. 5-(Allyloxy)-1,1,2,2,3,3,4,4-octafluoropentane was synthesized by aW illiamson reaction.…”

“…5-(Allyloxy)-1,1,2,2,3,3,4,4-octafluoropentane was synthesized by aW illiamson reaction. [27] 1,3,5,7,9,11,14-Heptaisobutyltricyclo[7.3.3. 15,11 ]heptasiloxane-endo-3,7,14-triol was synthesized by hydrolytic condensation of isobutyltrimethoxysilaneu nder basic conditions according to aprocedure described elsewhere.…”

Hydrophobic Materials Based on Fluorocarbofunctional Spherosilicates

“…The rhodium siloxide complex [{Rh(-OSiMe 3 (cod)} 2 ] was synthesized according to the original procedure described by Marciniec et al [31,32]. 1,1,2,2,3,3,4,4-Octafluoropentyl allyl ether was synthesized by the Williamson reaction [33] and octakis (hydridodimethylsiloxy) octasilsesquioxane was prepared according to the procedure described by Caetano et al [29]. Glass plates were purchased from Thermo Scientific.…”

Synthesis, Characterization, and Thermal Properties of Organic–Inorganic Hybrids Based on Gelatin and Organomodified Silicones

“…[24][25][26][27][28] Gelatin-siloxane hybrids were prepared as follows 29 : Two grams of gelatin was dissolved in water and heated under stirring (pH of the solution was adjusted by sodium carbonate to 9). THF and chloroform were purchased from P.O.CH (Gliwice, Poland) and used as received.…”