Open AccessProbing the structure of a rotaxane with two-dimensional infrared spectroscopy
Author(s) -
Olaf F. A. Larsen,
Pavol Bodis,
Wybren Jan Buma,
Jeffrey S. Hannam,
David A. Leigh,
Sander Woutersen
Publication year - 2005
Publication title -
proceedings of the national academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.0505313102
Subject(s) - rotaxane , infrared spectroscopy , spectroscopy , chemistry , infrared , catenane , amide , threading (protein sequence) , picosecond , crystallography , thread (computing) , femtochemistry , femtosecond , rotational–vibrational coupling , photochemistry , molecular machine , molecule , materials science , crystal structure , supramolecular chemistry , nanotechnology , protein structure , optics , organic chemistry , biochemistry , operating system , physics , computer science , quantum mechanics , laser
Femtosecond 2D-IR spectroscopy has been used to study the structure of a [2]rotaxane composed of a benzylic amide macrocycle that is mechanically interlocked onto a succinamide-based thread. Both the macrocycle and the thread contain carbonyl groups, and by determining the coupling between the stretching modes of these groups from the cross-peaks in the 2D-IR spectrum, the structure of the macrocycle-thread system has been probed. Our results demonstrate that 2D-IR spectroscopy can be used to observe structural changes in molecular devices on a picosecond time scale.
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