Thermal and photochemical switching of conformation of poly(ethylene glycol)-substituted cyclodextrin with an azobenzene group at the chain end

Youhei Inoue, Paul Kuad, Yasushi Okumura, Yoshinori Takashima, Hiroyasu Yamaguchi, Akira Harada

Research output: Contribution to journalArticlepeer-review

128 Citations (Scopus)

Abstract

Poly(ethylene glycol) (PEG)-substituted cyclodextrin (CD) with an azobenzene group at the terminal of the PEG chain (6-Az-PEG600-HyCiO-β-CD) was synthesized. The conformation of 6-Az-PEG600-HyCiO-β-CD in aqueous solution could be controlled thermally and photochemically. At low concentration, 6-trans-Az-PEG600-HyCiO-β-CD formed different types of self-inclusion complexes or existed in a dethreading form depending on the temperature, while at high concentration, an intermolecular complex was formed. Moreover, UV-light irradiation induced a conformational change to a self-inclusion complex where the CD cavity included the azobenzene part regardless of the concentration.

Original languageEnglish
Pages (from-to)6396-6397
Number of pages2
JournalJournal of the American Chemical Society
Volume129
Issue number20
DOIs
Publication statusPublished - May 23 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Fingerprint Dive into the research topics of 'Thermal and photochemical switching of conformation of poly(ethylene glycol)-substituted cyclodextrin with an azobenzene group at the chain end'. Together they form a unique fingerprint.

Cite this