Open AccessMeasuring the Stability of Supramolecular Complexes in the Proximity of Single‐Walled Carbon Nanotubes
Author(s) -
Naranjo Teresa,
Villalva Julia,
Pérez Emilio M.
Publication year - 2020
Publication title -
chemistryopen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 29
ISSN - 2191-1363
DOI - 10.1002/open.202000018
Subject(s) - supramolecular chemistry , cyanuric acid , carbon nanotube , non covalent interactions , crown ether , covalent bond , molecule , chemistry , derivative (finance) , host–guest chemistry , nanotechnology , materials science , combinatorial chemistry , hydrogen bond , organic chemistry , ion , melamine , financial economics , economics
The decoration of SWNTs with supramolecular motifs is a common strategy for their subsequent noncovalent functionalization. However, due to the lack of a standard methodology, there are no quantitative measurements showing the extent to which the supramolecular equilibria are affected by one of the host‐guest couple being anchored to the SWNT. Here, we use a method we initially developed to quantify association of small organic molecules to the walls of SWNTs to compare association constants of two host‐guest systems, a Hamilton receptor‐cyanuric acid derivative and a crown ether‐ammonium couple, in solution and when the host is covalently attached to the SWNTs. Our data show that association does occur, but the stability of the complexes is significantly affected, as reflected in a sizable reduction in their association constant, when compared to solution.