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Reversible Photoinduced Shape Changes of Crystalline Organic Nanorods
Author(s) -
AlKaysi R. O.,
Bardeen C. J.
Publication year - 2007
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.200602741
Subject(s) - nanorod , materials science , nanoporous , anthracene , template , molecule , nanoscopic scale , bending , nanotechnology , optoelectronics , photochemistry , chemical engineering , composite material , organic chemistry , engineering , chemistry
Crystalline nanorods composed of 9‐anthracene carboxylic acid (9‐AC) are synthesized using nanoporous Al 2 O 3 templates. When a segment of an isolated rod is exposed to UV‐light, localized solid‐state photodimerization of the 9‐AC molecules induces micrometer‐scale bending (see figure). The nanorod reverts back to its original shape after several minutes in the dark at room temperature. The reversible photoinduced shape change could be repeated multiple times.