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Bending Materials with Light: Photoreversible Macroscopic Deformations in a Disordered Polymer
Author(s) -
Jin Yuhuan,
Paris Shadrick I. M.,
Rack Jeffrey J.
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201102157
Subject(s) - photochromism , isomerization , materials science , photochemistry , polymer , bending , amorphous solid , excitation , ruthenium , norbornene , irradiation , chemical physics , composite material , nanotechnology , polymerization , crystallography , organic chemistry , catalysis , chemistry , physics , engineering , nuclear physics , electrical engineering
An amorphous co‐polymer formed from norbornene and a photochromic ruthenium sulfoxide complex shows reversible macroscopic deformations when irradiated. Charge‐transfer excitation of the sulfur‐bonded isomer leads to isomerization and a macroscopic bending of the film. Charge‐transfer excitation of the oxygen‐bonded isomer reverses the bending. The macroscopic bending is ascribed to the molecular isomerization.