Amylose-grafted Curdlan: A New Class of Semi-artificial Branched Polysaccharides for Hierarchical Polymeric Superstructures Created by the Action of “Orthogonal” Binding Sites

Shun ichi Tamaru, Miyabi Honzaki, Kinosuke Kamogawa, Kaori Hori, Miki Kubo, Naofumi Kuroda, Seiji Shinkai

Research output: Contribution to journalArticle

Abstract

The semi-artificial branched-polysaccharides, amylose-grafted curdlans, were synthesized utilizing an enzymatic polymerization. Both a curdlan main chain and amylose side chains on the polysaccharides maintain the original helical structure as well as the molecular binding ability. Thanks to the difference in their molecular recognition properties between β-1,3-glucan chain and α-1,4-glucan chain, the amylose-grafted curdlans can provide two different orthogonal binding sites within one polymeric system. When a water-soluble polythiophene was mixed with the amylose-grafted curdlan, the polythiophene was twisted in two different modes and therein, fluorescence energy of the polythiophene wrapped by the amylose side chains was successfully transferred to the polythiophene wrapped by the curdlan main chain. We thus concluded that in the dendritic superstructure of this polysaccharide, a self-organized “Janus-type FRET system” was successfully constructed.

Original languageEnglish
Pages (from-to)2102-2107
Number of pages6
JournalChemistry - An Asian Journal
Volume14
Issue number12
DOIs
Publication statusPublished - Jun 14 2019

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Organic Chemistry

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