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Nanomechanics of Cation–π Interactions in Aqueous Solution
Author(s) -
Lu Qingye,
Oh Dongyeop X.,
Lee Youngjin,
Jho Yongseok,
Hwang Dong Soo,
Zeng Hongbo
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201210365
Subject(s) - nanomechanics , aqueous solution , chemistry , tryptophan , nanotechnology , computer science , materials science , organic chemistry , biochemistry , amino acid , atomic force microscopy
The first direct probing of the nanomechanics of cation–π interactions in aqueous media was accomplished by using a surface forces apparatus with complementary theoretical simulations. The tetraethylammonium (TEA) ion breaks the adhesion between poly‐ L ‐tryptophan (PTrp) and poly‐ L ‐lysine (PLL) with a 100 times higher sensitivity relative to the K + ion (PS=polystyrene, PTyr=poly‐L‐tyrosine, and ACh=acetylcholine).