論文

査読有り
2014年

Spontaneous helical folding of bis(Ni-salphen) complexes in solution and in the solid state: spectroscopic tracking of the unfolding process induced by Na+ ions

DALTON TRANSACTIONS
  • Hiroto Achira
  • ,
  • Muneyuki Ito
  • ,
  • Toshiki Mutai
  • ,
  • Isao Yoshikawa
  • ,
  • Koji Araki
  • ,
  • Hirohiko Houjou

43
15
開始ページ
5899
終了ページ
5907
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1039/c3dt53397b
出版者・発行元
ROYAL SOC CHEMISTRY

Four kinds of bis(Ni-salphen) complexes containing a 2-methylenepropane-1,3-diyl linker were synthesised and characterised. Crystal structural analysis revealed that one of the complexes folded into a helical structure, in which two Ni atoms were at a distance of 3.2 angstrom from each other. NMR measurements suggested that a similar folded state was maintained in solution, and the energy barrier for refolding through an unfolded state was 47 kJ mol(-1). The folded complex also exhibited a significant bathochromic shift in its UV-Vis absorption structure. Addition of sodium ions caused unfolding of the complexes, and the corresponding spectra were attributed to a virtually isolated state. DFT calculations reproduced well the energy barrier and folding-induced bathochromic shift.

Web of Science ® 被引用回数 : 6

リンク情報
DOI
https://doi.org/10.1039/c3dt53397b
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000333122800033&DestApp=WOS_CPL
ID情報
  • DOI : 10.1039/c3dt53397b
  • ISSN : 1477-9226
  • eISSN : 1477-9234
  • Web of Science ID : WOS:000333122800033

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