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pH‐Sensitive Locomotion of Cyclodextrins in a Block–Selective Mobile Polyrotaxane
Author(s) -
Choi Hak Soo,
Hirasawa Ayaka,
Ooya Tooru,
Kajihara Daisuke,
Hohsaka Takahiro,
Yui Nobuhiko
Publication year - 2006
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200600242
Subject(s) - copolymer , intramolecular force , anthracene , block (permutation group theory) , förster resonance energy transfer , chemistry , fluorescence , rotaxane , cyclodextrin , combinatorial chemistry , stereochemistry , photochemistry , molecule , organic chemistry , polymer , physics , supramolecular chemistry , geometry , mathematics , quantum mechanics
On the move! A block‐selective mobile polyrotaxane, synthesized in a one‐pot sequence using anthracene (AN) capping agents, examines the movement of α‐cyclodextrins (α‐CDs) along the chains of a PEI‐ b ‐PEG‐ b ‐PEI copolymer (see figure). By labeling the α‐CDs with fluorescein (FL) and monitoring the fluorescence resonance energy transfer, the intramolecular block‐selective movement of α‐CDs is characterized in response to pH variation.