Preparation of novel carborane-containing boron carbide precursor and its derived ceramic hollow microsphere

Yan, Dexuan; Chen, Jiahui; Gou, Yanzi

doi:10.1016/j.ceramint.2022.03.108

Cited by 5 publications

(6 citation statements)

References 22 publications

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“…Aromatic dichlorocarboranes 26 , 27 , and 28 were self-polymerized by means of Yamamoto polycondensation, whereby a Ni(II) compound and a reducing agent (Zn) were used, generating poly(carborane-phenylene)s I-26 , I-27 , − and a carborane-containing aromatic polyether I-28 . While carborane disilyl chlorides 29 and 30 provided another synthetic route to obtain carborane-containing poly(arylacetylene silane/siloxane) which involved the coupling reaction between halides and Grignard reagents.…”

Section: Synthetic Strategies For Carborane-containing Polymersmentioning

confidence: 99%

Carborane-Containing Polymers: Synthesis, Properties, and Applications

Zhang,

Rendina,

Müllner

2023

ACS Polym. Au

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Carboranes are an important class of electron-delocalized icosahedral carbon−boron clusters with unique physical and chemical properties, which can offer various functions to polymers including enhanced heat-resistance, tuned electronic properties and hydrophobicity, special ability of dihydrogen bond formation, and thermal neutron capture. Carborane-containing polymers have been synthesized mainly by means of step-growth polymerizations of disubstituted carborane monomers, with chain-growth polymerizations of monosubstituted carborane monomers including ATRP, RAFT, and ROMP only utilized recently. Carboranecontaining polymers may find application as harsh-environment resistant materials, ceramic precursors, fluorescent materials with tuned emissive properties, novel optoelectronic devices, potential BNCT agents, and drug carriers with low cytotoxicity. This review highlights carborane-containing polymer synthesis strategies and potential applications, showcasing the versatile properties and possibilities that this unique family of boron compounds can provide to the polymeric systems.

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Section: Synthetic Strategies For Carborane-containing Polymersmentioning

confidence: 99%

Carborane-Containing Polymers: Synthesis, Properties, and Applications

Zhang,

Rendina,

Müllner

2023

ACS Polym. Au

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“…The Ni-catalyzed polymerization of 1,7-bis(4-chlorophenyl)- meta -carborane produces poly(phenylene- meta -carborane), which can be used as a novel boron carbide precursor [ 140 ]. Due to its high ceramic yield, it can be used to prepare boron carbide ceramics with different shapes [ 141 ]. In particular, poly(phenylene- meta -carborane) was used to prepare the boron carbide hollow microsphere via slurry-coating and a method derived from a previous study.…”

Section: Carborane As a Boron Source For Boron-containing Materialsmentioning

confidence: 99%

“…The poly(phenylene- meta -carborane)/polyacrylonitrile slurry was prepared and coated on a polyoxymethylene ball substrate. After air cross-linking, the substrate decomposition and heat-treatment at 1100 °C in argon atmosphere, hollow boron carbide microspheres with diameter of approximate 1.34 mm, and average shell thickness of 30 μm were obtained ( Figure 6 ) [ 141 ].…”

Section: Carborane As a Boron Source For Boron-containing Materialsmentioning

confidence: 99%

Composites and Materials Prepared from Boron Cluster Anions and Carboranes

Avdeeva,

Nikiforova,

Malinina

et al. 2023

Materials

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Here, we present composites and materials that can be prepared starting with boron hydride cluster compounds (decaborane, decahydro-closo-decaborate and dodecahydro-closo-dodecaborate anions and carboranes). Recent examples of their utilization as boron protective coatings including using them to synthesize boron carbide, boron nitride, metal borides, metal-containing composites, and neutron shielding materials are discussed. The data are generalized demonstrate the versatile application of materials based on boron cluster anions and carboranes in various fields.

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“…are used as carbon sources for the synthesis of B 4 C, but the application of prepared B 4 C powder was inhibited owing to their single morphology and large particle size, which can be solved by using organic carbon source. [24][25][26] This is because the multiform pyrolysis carbon produced by the pyrolysis of organic compounds can improve the dielectric loss and interfacial effect of materials by changing the structure and morphology during the reaction process. Ahmed et al 27 synthesized boron carbide using boric acid and lactose as raw materials through a carbothermal synthesis route.…”

Section: Introductionmentioning

confidence: 99%

Combustion synthesized boron carbide powders by different organic carbon sources and microwave absorbing properties

Deng,

Ding,

Xiao

et al. 2024

Int J Applied Ceramic Tech

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Boron carbide powders were synthesized by combustion synthesis using organics chitosan, dextrin, cellulose, starch, and polyvinyl chloride (PVC) as carbon sources. The microwave absorbing properties of boron carbide powders synthesized by different carbon sources were investigated. The results showed that the powders synthesized using organic compounds containing Cl and N atoms as carbon sources have better absorbing properties. The peak value of reflection loss of boron carbide powder prepared with chitosan as carbon source is −46.41 dB at 2.1 mm thickness, with an effective absorption range of 9.21–12.30 GHz and an effective absorption bandwidth of 3.09 GHz. The small and uniform boron carbide grains and residual carbon with multiple morphologies enhance the interface polarization and electronic polarization in the material, which leads to multiple reflections and losses of the microwave. Additionally, the lattice defects and surface holes caused by Cl, N, and other atoms in chitosan and PVC increase the energy storage sites of the material, which makes the materials obtain excellent microwave absorbing properties. Boron carbides fabricated from an organic carbon source provide a potential for the preparation of high‐temperature resistant absorber.

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Preparation of novel carborane-containing boron carbide precursor and its derived ceramic hollow microsphere

Cited by 5 publications

References 22 publications

Carborane-Containing Polymers: Synthesis, Properties, and Applications

Carborane-Containing Polymers: Synthesis, Properties, and Applications

Composites and Materials Prepared from Boron Cluster Anions and Carboranes

Combustion synthesized boron carbide powders by different organic carbon sources and microwave absorbing properties

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