Nanomechanics of Cation–π Interactions in Aqueous Solution

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). As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.