POSS containing organometallic polymers: synthesis, characterization and solid-state pyrolysis behavior

Ruan, Zhijun; Rong, Wenhui; Zhan, Xuejun; Li, Qianqian; Li, Zhen

doi:10.1039/c4py00555d

Cited by 20 publications

(15 citation statements)

References 62 publications

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“…3a-b), it was found that the introduction of POSS groups could make the nanospheres a much smaller size, moreover, the POSS containing organometallic polymer demonstrated excellent sinter-resistant properties, the diameter of the obtained nanospheres did not increase with the increased temperature. No matter the position of the [CCCo 2 (CO) 6 ] was changed from the main chain to the side chain, these obtained results further confirmed our previous observations [38].…”

Section: Morphological Characterization Of Nanoparticles Formation Bysupporting

confidence: 94%

“…Compounds 1, 2, 5 and 6 were synthesized according to previous literatures [38][39][40][41]. The synthetic pathway of compounds 3 and 4 and the polymers were shown in Scheme 1.…”

Section: Materials and Instrumentationmentioning

confidence: 99%

“…Since the structure of the organometallic precursors could badly affect the morphology and properties of the yielded magnetic materials, thus, it is an effective approach to improve the performance of the obtained magnetic materials by adjusting the structure of the organometallic precursors. Recently, we reported a straightforward method to obtain new magnetic nanoparticles (MNPs) with controllable size through the solid-state pyrolysis (SSP) of POSS containing organometallic compounds or polymers [37,38]. It was found that the introduced POSS group could hinder cobalt nanoparticles sintering into larger particles effectively, even under a high temperature, meanwhile, the POSS cage could be converted into SiOx after pyrolysis.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Solid-State Pyrolysis Behavior of POSS Containing Organometallic Polymer with Dicobalt Hexacarbonyl in the Side Chain

Ruan

Rong

et al. 2014

J Inorg Organomet Polym

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POSS containing organometallic polymer (P2-Co) with dicobalt hexacarbonyl in the side chain was synthesized for solid-state pyrolysis to produce magnetic nanoparticles. For comparison, its analogue (P1-Co) without POSS groups was also prepared. After pyrolysis, the nanospheres obtained from P2-Co with POSS groups, had a Co@C-SiOx structure with small and uniform size (*15 nm), and its diameter almost remained unchanged when the pyrolysis temperature increased, showing excellent sinter-resistant properties. However, the nanoparticles obtained from P1-Co sintered seriously at high temperature, and its size was enlarged from 45 to 160 nm, when the pyrolysis temperature increased from 700 to 850°C. Meanwhile, the obtained nanoparticles all showed good magnetic properties, with the saturation magnetization in the range of 24.0-58.5 emu g -1 , making them promising candidates for the actual applications.

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Section: Morphological Characterization Of Nanoparticles Formation Bysupporting

confidence: 94%

“…Compounds 1, 2, 5 and 6 were synthesized according to previous literatures [38][39][40][41]. The synthetic pathway of compounds 3 and 4 and the polymers were shown in Scheme 1.…”

Section: Materials and Instrumentationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis and Solid-State Pyrolysis Behavior of POSS Containing Organometallic Polymer with Dicobalt Hexacarbonyl in the Side Chain

Ruan

Rong

et al. 2014

J Inorg Organomet Polym

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“…In recent years, PDC‐based absorbing materials have been receiving considerable attention due to their high temperature resistance, good oxidation resistance, and regulable structures . However, the sole PDCs are not suitable for EMI absorbing materials considering their insufficient dielectric loss .…”

Section: Introductionmentioning

confidence: 99%

Enhanced electromagnetic wave absorption of Fe‐doped silicon oxycarbide nanocomposites

Qian

et al. 2019

J Am Ceram Soc

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Polymer‐derived ceramics (PDCs), such as SiOC, SiCN, SiBCN, and SiC are considered the best candidates for designing high‐performance microwave absorber due to their controllable structure, homogeneous element composition at atom level, tunable electromagnetic and electrochemical properties. Herein, Fe ions doped silicon oxycarbide (Fe ions‐SiOC) ceramics have been successfully fabricated via solvothermal method. The electromagnetic absorption performances of the nanocomposites prove to be controllable via tailoring Fe ion contents. The Fe ions effectively enhance both the interfacial polarization of amorphous SiOC, and the dielectric properties of the nanocomposites but barely effect magnetic properties of the nanocomposite. As for 0.16 mol/L‐SiOC ceramics annealed at 1450°C, the effective absorption bandwidth as high as 2.00 GHz and reflection loss of −59.60 dB at 5.40 GHz with the thickness of 4.55 mm are obtained. Such work opens up a novel and simple route to scale up the PDC‐based materials with broadband and excellent microwave absorbing performances.

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“…[30][31][32] Their unique star-shaped nanostructures and chemical properties, such as facile chemical modification, good pH tolerance, high temperature and oxidation resistance properties, make POSS an excellent building block for constructing multi-functional materials. [33][34][35] The recent studies have shown that the incorporation of POSS into organic or inorganic polymer could create a micro/mesoporous matrix without using a template. 36,37 The high surface area provided by the porous polymer network and the functionality of the 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 4 POSS can be synergistically combined in such a structure configuration, which representing a promising pathway to amplify material functions.…”

mentioning

confidence: 99%

POSS-Derived Mesostructured Amphiphilic Polyoxometalate-based Ionic Hybrids as Highly Efficient Epoxidation Catalysts

Leng

Liu

Jiang

et al. 2014

ACS Sustainable Chem. Eng.

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Novel amphiphilic mesostructured Polyoxometalate-based ionic hybrids have been successfully synthesized through designing new POSS-derived mesoporous poly(ionic liquids) (POSS-BM x ) to interact with Keggin-type phosphotungstic acid (PW). The obtained ionic hybrids POSS-BM x -PW have good thermal stability, adjustable pore structure and surface wettability. Catalytic tests for H 2 O 2 -based epoxidation of cyclooctene, along with comparisons to various counterparts, well demonstrate that POSS-BM x -PW (x = 8, 11) exhibit high activity and selectivity, coupled with convenient recovery and steady reuse. The unique mesoporous structure and the amphiphilic catalyst surface are revealed to be

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POSS containing organometallic polymers: synthesis, characterization and solid-state pyrolysis behavior

Cited by 20 publications

References 62 publications

Synthesis and Solid-State Pyrolysis Behavior of POSS Containing Organometallic Polymer with Dicobalt Hexacarbonyl in the Side Chain

Synthesis and Solid-State Pyrolysis Behavior of POSS Containing Organometallic Polymer with Dicobalt Hexacarbonyl in the Side Chain

Enhanced electromagnetic wave absorption of Fe‐doped silicon oxycarbide nanocomposites

POSS-Derived Mesostructured Amphiphilic Polyoxometalate-based Ionic Hybrids as Highly Efficient Epoxidation Catalysts

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