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A Photochemically Driven Molecular Machine
Author(s) -
Ballardini Roberto,
Balzani Vincenzo,
Gandolfi Maria Teresa,
Prodi Luca,
Venturi Margherita,
Philp Douglas,
Ricketts Howard G.,
Stoddart J. Fraser
Publication year - 1993
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199313011
Subject(s) - triethanolamine , photochemistry , chemistry , absorption (acoustics) , absorption spectroscopy , oxygen , irradiation , polymer chemistry , materials science , analytical chemistry (journal) , organic chemistry , optics , physics , nuclear physics , composite material
The unthreading and rethreading of pseudorotaxane 1 , which contains two p ‐phenylene spacers linking two bipyridinium units and a central 1, 5‐naphthalenediyl unit, is reversible when an initially oxygen‐free solution of 1 in water also containing 9‐anthracenecarboxylic acid as a photosensitizes and triethanolamine as a “sacrificial” reluctant is irradiated and then aerated. The absorption and emission spectra of the solution provide conclusive evidence.