論文

査読有り
2014年2月

Synthesis and fluorescent properties of conjugated co-oligomers containing maleimide and carbazole units at the main chain

POLYMER JOURNAL
  • Munetoshi Nakamura
  • ,
  • Kazuhiro Yamabuki
  • ,
  • Tsutomu Oishi
  • ,
  • Kenjiro Onimura

46
2
開始ページ
94
終了ページ
103
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1038/pj.2013.83
出版者・発行元
NATURE PUBLISHING GROUP

Yamamoto coupling polymerizations of 2,3-diiodo-N-cyclohexylmaleimide (DICHMI) with dihalide carbazole derivatives (DXRCz) (3,6-dibromo-N-methylcarbazole (3,6-DBrMCz), 3,6-diiodo-N-hexylcarbazole (3,6-DIHCz) and 2,7-dibromo-N-hexylcarbazole (2,7-DBrHCz)) were performed using a nickel complex. The number-average molecular weights (M-n) of poly(N-cyclohexylmaleimide-co-N-substituted carbazole)s (poly(CHMI-co-RCz)) were in the range of 600-7300, as determined by gel permeation chromatography analyses. The fluorescence emissions of the poly(CHMI-co-RCz) solution showed two emission maxima in the 417-426 and 581-595 nm regions. The fluorescence peaks of co-oligomers at long wavelengths (581-595 nm) were attributable to the conjugated neighboring CHMI-RCz units of polymer main chains. The intensities of fluorescence emissions were significantly affected by the polarity of organic solvents such as tetrahydrofuran and N,N-dimethylformamide. The solvatochromic fluorescence phenomenon may be attributable to the twisting of CHMI-RCz bonds in an excited state in polar solvents.

Web of Science ® 被引用回数 : 2

リンク情報
DOI
https://doi.org/10.1038/pj.2013.83
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000331082800002&DestApp=WOS_CPL

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