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Peer-reviewed Lead author Corresponding author
Oct, 2017

Proton-Induced Assembly-Disassembly Modulation of Spiroborate Twin-Bowl Polymers Bearing Pyridyl Groups

MACROMOLECULES
  • Hiroshi Danjo
  • ,
  • Masahiro Hamaguchi
  • ,
  • Kohei Asai
  • ,
  • Mizuki Nakatani
  • ,
  • Hiroko Kawanishi
  • ,
  • Masatoshi Kawahata
  • ,
  • Kentaro Yamaguchi

Volume
50
Number
20
First page
8028
Last page
8032
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1021/acs.macromol.7b01924
Publisher
AMER CHEMICAL SOC

Twin-bowl-shaped tris-(spiroborate) cyclophanes bearing pyridyl groups have been prepared for the construction of proton-responsive supramolecular polymers. Preparation of the pyridyl twin bowls was carried out by the reaction of 6,6'-(3-pyri dyl)-2,2',3,3'-tetrahydroxy- 1, 1'-binaphthyls and an equimolar amount of boric acid in N,N-dimethylformamide in self-organization manner, as previously reported. The reversible acid/base response of the pyridyl twin bowls was evaluated by the addition of hydrochloric acid and aqueous sodium hydroxide. The assembly disassembly modulation of the supramolecular polymers composed of pyridyl twin bowls and the tricationic iridium-(III) complex was also examined. Dissociation of the supramolecular polymers occurred by the addition of hydrochloric acid, and its reconstruction was realized by the addition of aqueous sodium hydroxide. The opposite behavior was observed when the dianionic palladium-(II) complex was employed as a guest. The addition of acid led to the formation of the aggregate that was dissociated by the addition of base.

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Link information
DOI
https://doi.org/10.1021/acs.macromol.7b01924
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000413885100023&DestApp=WOS_CPL
ID information
  • DOI : 10.1021/acs.macromol.7b01924
  • ISSN : 0024-9297
  • eISSN : 1520-5835
  • Web of Science ID : WOS:000413885100023

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