Preparation of soluble polysilsesquioxane containing phthalimido side-chain groups and its optical and thermal properties

Miyauchi, Shunya; Sugioka, Takuo; Sumida, Yasutaka; Kaneko, Yoshirō

doi:10.1016/j.polymer.2015.04.035

Cited by 14 publications

(18 citation statements)

References 52 publications

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“…The activity of Sc(OTf) 3 in the reactionb etween POSS silanols and 2-methylallylborane were checked. The activity of Sc(OTf) 3 in the reactionb etween POSS silanols and 2-methylallylborane were checked.…”

Section: Resultsmentioning

confidence: 99%

“…Encouraged by these results, the above mentioned synthetic pattern was then used for the synthesis of functionalized SQs. The activity of Sc(OTf) 3 in the reactionb etween POSS silanols and 2-methylallylborane were checked. The first step was the optimization of the process.…”

Section: Resultsmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8] In this connection, they have been extensively investigated, especially in materialc hemistry. [1][2][3][4][5][6][7][8] In this connection, they have been extensively investigated, especially in materialc hemistry.…”

Section: Introductionmentioning

confidence: 99%

“…Due to their unique properties such as aw ell-definedh ighly symmetric nanostructure and thermal stability, POSS molecules (POSS = polyhedralo ligomeric silsesquioxane)h ave been widely used as versatile buildingb locks for the construction of hybrid materials. [1][2][3][4][5][6][7][8] In this connection, they have been extensively investigated, especially in materialc hemistry. [9][10][11][12] Recently,t he synthesis of functionalizeds ilsesquioxanes cages( SQs) containing other heteroatomsa nd functional groupsh as been strongly developed by many scientists.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, the research team has recentlyp laced a strong focus on the use of metal triflates as catalysts in O-silylation,a sw ell as S-a nd O-germylationr eactions. [57][58][59][60][61][62] Whereas, as previously described, new synthetic pathways for the synthesis and functionalization of variousS Qs cages via Sc(OTf) 3 catalyzed coupling of SiÀOH groups in silsesquioxane molecules employed various2 -methylallylsilanes [60] and germanes (Scheme 2), [61] we decided to extendt his catalytic approach by also using allylborons pecies, which are commonly appliedi n many organic transformations. [63,64] In this paper,t wo independent strategiesa re described for the construction of boron-functionalized silsesquioxanes ( Figure 1).…”

Section: Introductionmentioning

confidence: 99%

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Introduction of Boron Functionalities into Silsesquioxanes: Novel Independent Methodologies

Kaźmierczak

Kuciński

Stachowiak

et al. 2018

Chemistry A European J

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Owing to their versatile application possibilities, silsesquioxanes (SQs) are of considerable interest for creating hybrid inorganic-organic materials. In this report, two novel and independent strategies for the direct attachment of boron functionalities to silsesquioxanes are presented. Encouraged by our previous work concerning the synthesis of borasiloxanes through the catalyst-free dehydrogenative coupling of silanols and boranes, we decided to apply our method to a synthesis of various boron-functionalized silsesquioxanes. During our tests, we also investigated the activity of scandium(III) triflate, which we have previously used as an excellent catalyst for the obtaining of Si-O-Si and Si-O-Ge moieties. As a result, we also discovered a novel approach for the O-borylation of Si-OH groups in silsesquioxanes with allylborane. Both routes are highly chemoselective and efficiently lead to the obtaining of Si-O-B moiety under air atmosphere and at room temperature.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Introduction of Boron Functionalities into Silsesquioxanes: Novel Independent Methodologies

Kaźmierczak

Kuciński

Stachowiak

et al. 2018

Chemistry A European J

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Synthesis and characterization of poly(methyl methacrylate)/polysiloxane composites and their coating properties

Xing

Peng

et al. 2018

J of Applied Polymer Sci

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A series of poly(methyl methacrylate) (PMMA)/polysiloxane composites and their coatings were prepared as designed. A copolymer (PMMAVTEOS) containing methyl methacrylate (MMA) and vinyltriethoxysilane (VTEOS) was prepared by free radical polymerization and then condensed with methyl triethoxysilane (MTES) to fabricate PMMA/polysiloxane composites; their corresponding coatings were obtained via a curing process in an oven (at 75 8C). The polymers were characterized by gel permeation chromatography and Fourier transform infrared spectroscopy. The surface property, hardness, water contact angle, thermal stability, and optical property of the coatings were investigated by scanning electron microscopy, pencil hardness testing, water contact angle testing, thermogravimetric analysis, and ultraviolet-visible spectroscopy, respectively. The results showed that, after addition of MMA, the pencil hardness of the coatings was reduced from 6H to 2H and the thermal stability decreased from 365 to 314 8C. However, it increased the flexibility and adhesion properties (the water contact angle increased from 94.78 to 102.18). The transparent PMMA/polysiloxane coatings showed excellent scratch resistance, a smooth surface, high thermal stability, and a strong adhesion property.

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Reactive and Functional Silicones for Special Applications

Racleş¹,

Dascălu²,

Bele³

et al. 2020

Reactive and Functional Polymers Volume One

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Preparation of soluble polysilsesquioxane containing phthalimido side-chain groups and its optical and thermal properties

Cited by 14 publications

References 52 publications

Introduction of Boron Functionalities into Silsesquioxanes: Novel Independent Methodologies

Introduction of Boron Functionalities into Silsesquioxanes: Novel Independent Methodologies

Synthesis and characterization of poly(methyl methacrylate)/polysiloxane composites and their coating properties

Reactive and Functional Silicones for Special Applications

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