Structural Study of Silyl−Carborane Hybrid Diethynylbenzene−Silylene Polymers by High-Resolution Solid-State 11B, 13C, and 29Si NMR Spectroscopy
Source abstract
Abstract
The structure of silyl-carborane (1,7-C 2 B 10 H 10 ) hybrid diethynylbenzene-silylene polymers with thermal treatment over a wide range of temperatures has been characterized by using 11 B MQ-MAS NMR, and 13 C and 29 Si CP-MAS NMR methods. From the experimental results, the following was found: (1) naphthalene rings form by diene reaction between the Ph−C≡C group and C≡C group at temperatures from 250 to 500 °C; (2) three-dimensional network forms by addition reaction between the vinyl group and C≡C group at curing temperatures from 250 to 350 °C and addition reaction between m -carborane group and the vinyl group and/or the C≡C group at curing temperatures from 250 to 350 °C; (3) the hybrid polymers are decomposed by oxidation at curing temperature of 500 °C; and (4) structural change of the m -carborane hybrid polymer leads to desirable modification of the oxygen index, heat deflection temperature, and flexural strength.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced NMR Techniques and Applications · Boron Compounds in Chemistry · Advanced MRI Techniques and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Advanced Materials Laboratory, Japan Chemical Innovation Institute, 2-1-6 Sengen, Tsukuba, Ibaraki 305-0047, Japan, Minase Research Institute, Sekisui Chemical Co., Ltd., 2-1 Hyakuyama, Shimamoto-cho, Mishima-gun, Osaka 618-8589, Japan, and Department of Chemistry and Materials Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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