Deuterium relaxation time of α-d-tryptophan included in cyclodextrin host molecules

Iwao Tabushi, Yasuhisa Kuroda, Masahiko Yamada, Takashi Sera

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Deuterium relaxation times of d- and l-α-d-tryptophan included in β-cyclodextrin derivatives were directly measured by deuterium NMR spectroscopy. The results showed that the molecular motion of the tryptophan molecule was strongly restricted even in the cavity of unmodified β-cyclodextrin and the additional recognition groupings - ammonium and carboxylate - on β-cyclodextrin did not affect the molecular motion of tryptophan, though the association constants were significantly enhanced.

Original languageEnglish
Pages (from-to)599-603
Number of pages5
JournalJournal of Inclusion Phenomena
Issue number6
Publication statusPublished - Dec 1988
Externally publishedYes


  • Cyclodextrin
  • deuterium relaxation
  • inclusion
  • receptor

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)


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