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タイトル
和文: 
英文:Design of donor-acceptor geometry for tuning of excited state polarization: fluorescence solvatochromism of push-pull biphenyls with various torsional restrictions on their aryl-aryl bonds 
著者
和文: 佐々木 俊輔, 仁子 陽輔, 小西玄一.  
英文: Shunsuke Sasaki, Yosuke Niko, Gen-ichi Konishi.  
言語 English 
掲載誌/書名
和文: 
英文:Tetrahedron 
巻, 号, ページ Vol. 70    No. 41    pp. 7551–7559
出版年月 2014年8月15日 
出版者
和文: 
英文:Elsevier 
会議名称
和文: 
英文: 
開催地
和文: 
英文: 
公式リンク http://www.sciencedirect.com/science/article/pii/S004040201401165X
 
DOI https://doi.org/10.1016/j.tet.2014.08.002
アブストラクト In this work, push–pull biphenyl analogs (4-(N,N-dimethylamino)-4′-formylbiphenyl) with a modulated dihedral angle of the aryl–aryl bond, using a bridged structure or methyl groups, were synthesized. Photophysical measurements of the synthesized compounds revealed the effect of the torsion between N,N-dimethylaniline (donor) and benzaldehyde moieties (acceptor) on their solvatochromic properties. Our data showed that the sensitivity of the fluorescence maxima to solvent polarity gradually increases as the biphenyl chromophore was restricted to a twisted conformation. This finding indicates that changing the torsional restrictions on the donor–acceptor system can be a factor to take into account for the development of novel solvatochromic dyes.

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