Polyhedral oligomeric silsesquioxanes tethered with perfluoroalkylthioether corner groups: Facile synthesis and enhancement of hydrophobicity of their polymer blends

Xu, Jianwei; Li, Xu; Cho, Ching Mui; Toh, Cher Ling; Shen, Lu; Mya, Khine Yi; Lu, Xuehong; He, Chaobin

doi:10.1039/b900299e

Cited by 53 publications

(40 citation statements)

References 39 publications

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“…Evaporation of solvent and excess MPTMS under reduced pressure gave octakis-2{ [3-(trimetoksysilyl)propyl]thio}ethyl-octasilsesquioxane (POSS-M24, 13.22 g, yield 100%). 29 Si NMR (C 6 …”

Section: Synthesis Of Octakis-2{[3-(trimetoksysilyl) Propyl]thio}ethymentioning

confidence: 99%

“…They may serve as cores for the generation of star branched, hyperbranched and dendritic branched polymers [1][2][3] and may be used for the cross-linking of linear polymers to produce various polymer networks [4][5][6][7]. They may also be important precursors in sol-gel technology for the generation of various porous and bulk materials [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Thiol-ene addition has been successively used for the synthesis of functionalized carbosilane dendrimers [26,27]. This reaction was also proved to be useful for the functionalization of POSSes [6,[28][29][30][31] and polysiloxanes [32][33][34][35][36]. Two different strategies were used for this purpose.…”

Section: Introductionmentioning

confidence: 99%

“…The reverse method, i.e. the addition of a thiol to alkene-POSS or polysiloxane, which is used in this research, was also practiced [6,28,29,[31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of New Polyfunctional Cage Oligosilsesquioxanes and Cyclic Siloxanes by Thiol-ene Addition

Rózga-Wijas

Chojnowski

2012

J Inorg Organomet Polym

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A novel octakis-2{ [3-(trimethoxysilyl)propyl] thio}ethyl-octasilsesqioxane (POSS-M24) was synthesized by radical thiol-ene addition of 3-mercaptopropyltrimethoxysilane, (MPTMS) to octavinyloctasilsesquioxane, (POSS-V8) in the presence of 2,2 0 azobisisobutyronitryl under mild conditions (60°C, toluene solution). Nano-building POSS units bearing both types of groups, 2-[3-(trimethoxysilyl)propylthio]-ethyl and vinyl, pendant to the POSS-cage were obtained by partial addition of MPTMS to the vinyl functions. Finally the thiol-ene addition of MPTMS to 2,4,6-trivinyl-2,4,6-trimethylcyclotrisiloxane (V 3 ) and 2,4,6,8-tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane (V 4 ) were explored. The structures of the thiol-ene addition products were confirmed by 29 Si NMR and mass Spectroscopy.

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“…Evaporation of solvent and excess MPTMS under reduced pressure gave octakis-2{ [3-(trimetoksysilyl)propyl]thio}ethyl-octasilsesquioxane (POSS-M24, 13.22 g, yield 100%). 29 Si NMR (C 6 …”

Section: Synthesis Of Octakis-2{[3-(trimetoksysilyl) Propyl]thio}ethymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The reverse method, i.e. the addition of a thiol to alkene-POSS or polysiloxane, which is used in this research, was also practiced [6,28,29,[31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis of New Polyfunctional Cage Oligosilsesquioxanes and Cyclic Siloxanes by Thiol-ene Addition

Rózga-Wijas

Chojnowski

2012

J Inorg Organomet Polym

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“…The derivative containing heptadecafluorodecyl groups appeared to be the most hydrophobic crystalline material having WCA of 154 • . Another method of synthesis of F-POSS was described by He et al who utilized the reactivity of the vinyl group in octakis(vinyl)octasilsesquioxane or octakis(vinyldimethylsiloxy)octasilsesquioxane in the reaction with perfluoroalkyl thiol in the presence of AIBN [21]. The obtained derivative was applied (in the amount of 5 %) to the modification of polymethyl methacrylate (PMMA) which resulted in a considerable increase in WCA from 71 • for non-modified PMMA to 124 • for modified one.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic Materials Based on Fluorocarbofunctional Spherosilicates

Maciejewski

Karasiewicz

Dutkiewicz

et al. 2014

Silicon

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Consecutive hydrosilylation-based syntheses were performed of silsesquioxanes containing mixed groups 1H,1H,2H,2H-perfluorooctyl (PFD) or octafluoropentyloxypropyl (OFP) and trimethoxysilylethyl (TMS) in different stoichiometric ratios. The presence of TMS makes it possible to form covalent bonds with substrates due to the reactivity of this group. All obtained derivatives were applied to hydrophobization of glass plates and by comparison of water contact angles (WCA) on modified surfaces the effect of silsesquioxane structure as well as TMS and fluoroalkyl group contents on hydrophobic properties was determined. Moreover, an additional glass plates surface modification was performed in order to obtain superhydrophobic surfaces. Two silica types of different specific surface (300 and 130 m 2 /g) and particle size (7 and 16 nm) parameters were used in this case for initial surface modification in order to increase its roughness. Irrespectively of particle size of applied silica, a dependence was found between the increase in water contact angle and the number of fluoroalkyl substituents in a molecule.

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Hybrid POSS Nanocomposites

Kong

Tan

et al. 2020

Silicon Containing Hybrid Copolymers

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Polyhedral oligomeric silsesquioxanes tethered with perfluoroalkylthioether corner groups: Facile synthesis and enhancement of hydrophobicity of their polymer blends

Cited by 53 publications

References 39 publications

Synthesis of New Polyfunctional Cage Oligosilsesquioxanes and Cyclic Siloxanes by Thiol-ene Addition

Synthesis of New Polyfunctional Cage Oligosilsesquioxanes and Cyclic Siloxanes by Thiol-ene Addition

Hydrophobic Materials Based on Fluorocarbofunctional Spherosilicates

Hybrid POSS Nanocomposites

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