NIR mechanochromic behaviours of a tetracyanoethylene-bridged hexa-peri-hexabenzocoronene dimer and trimer through dissociation of C–C bonds
抄録
Oxidation of dicyanomethyl-substituted hexa-peri-hexabenzocoronenes (HBCs) furnished a tetracyanoethylene-bridged HBC dimer and trimer. The solid state structures of the oligomers were elucidated using single crystal X-ray diffraction analysis. In the solution state, these HBC oligomers exhibited conformational isomerism, depending on solvents and temperatures. Moreover, solid samples of the HBC dimer and trimer exhibited mechanochromism, showing near IR absorption upon grinding through generation of radical species. The formed radical was stable for 4 months, indicating the persistent nature of the radical species. These NIR mechanochromic behaviours of the HBC oligomers were originated from the reversible C–C bond dissociation and formation of a tetracyanoethylene linkage between the HBC units.
収録刊行物
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- Journal of Materials Chemistry C
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Journal of Materials Chemistry C 5 (22), 5310-5315, 2017-06-14
Royal Society of Chemistry
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詳細情報 詳細情報について
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- CRID
- 1050001338805857536
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- NII論文ID
- 120006337723
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- HANDLE
- 2237/26928
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- ISSN
- 20507526
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- IRDB
- CiNii Articles