Cucurbit[7]uril: A simple macrocyclic, pH-triggered hydrogelator exhibiting guest-induced stimuli-responsive behavior

Ilha Hwang, Woo Sung Jeon, Hee Joon Kim, Dongwoo Kim, Hyunuk Kim, Narayanan Selvapalam, Norifumi Fujita, Seiji Shinkai, Kimoon Kim

Research output: Contribution to journalArticlepeer-review

170 Citations (Scopus)

Abstract

Without modification of its periphery, cucurbit[7]uril (a macrocyclic cavitand comprising seven glycoluril units) forms a hydrogel. The gelation is thermoreversible and sensitive to pH, but is inhibited by the presence of alkali-metal ions and shows guest-induced stimuli-responsive behavior: upon addition of a small amount of a guest, it undergoes a reversible gel-sol transition with alternating UV irradiation and heat treatment (see picture). (Figure Presented).

Original languageEnglish
Pages (from-to)210-213
Number of pages4
JournalAngewandte Chemie - International Edition
Volume46
Issue number1-2
DOIs
Publication statusPublished - 2007

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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