論文

査読有り
2017年6月

pH-Responsive Cotton Effects in the d-d Transition Band of Self-Assembling Copper(II) Complexes with a Cholesteryl-Armed Ligand

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
  • Takuya Sagami
  • ,
  • Shota Umemoto
  • ,
  • Yuhei O. Tahara
  • ,
  • Makoto Miyata
  • ,
  • Yusuke Yonamine
  • ,
  • Daisuke Ishikawa
  • ,
  • Taizo Mori
  • ,
  • Katsuhiko Ariga
  • ,
  • Hiroyuki Miyake
  • ,
  • Satoshi Shinoda

90
6
開始ページ
739
終了ページ
745
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1246/bcsj.20170054
出版者・発行元
CHEMICAL SOC JAPAN

New amphiphilic transition metal complexes with helical structures self-assembled to form disk-like units in 20wt% EtOH/water. d-d transition bands in the visible-near IR region were used to probe conformational changes during the assembly process. Self-assembly resulted in dynamic conformational changes and considerable enhancement of circular dichroism (CD) in the d-d transition bands due to steric interaction among neighboring complexes. A copper(II) complex showed the most dramatic CD changes upon self-assembly, including sign inversion of the CD signal. The self-assembled Cu(II) complexes also showed pH-responsive Cotton effects between pH 6 and pH 7 due to deprotonation. The Cotton effects of the Cu(II) complex could be finely tuned by varying the pH and ethanol content of the aqueous solvent.


リンク情報
DOI
https://doi.org/10.1246/bcsj.20170054
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000402007100013&DestApp=WOS_CPL