Title: Strong enhancement of nonlinear optical properties through supramolecular chirality
Authors: Verbiest, Thierry ×
Van Elshocht, Sven
Kauranen, M
Hellemans, Louis
Snauwaert, Johan
Nuckolls, C
Katz, TJ
Persoons, Andre #
Issue Date: Jan-1998
Publisher: Amer assoc advancement science
Series Title: Science vol:282 issue:5390 pages:913-915
Abstract: A new approach to second-order nonlinear optical (NLO) materials is reported, in which chirality and supramolecular organization play key roles. Langmuir-Blodgett films of a chiral helicene are composed of supramolecular arrays of the molecules. The chiral supramolecular organization makes the second-order NLO susceptibility about 30 times larger for the nonracemic material than for the racemic material with the same chemical structure. The susceptibility of the nonracemic films is a respectable 50 picometers per volt, even though the helicene structure lacks features commonly associated with high nonlinearity. Susceptibility components that are allowed only by chirality dominate the second-order NLO response.
ISSN: 0036-8075
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
Chemistry - miscellaneous
× corresponding author
# (joint) last author

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