|
|||||
|
|
Anion complexation by calix[4]arene-TTF conjugates |
|
| Authors: | Karolína FlídrováMarcela Tkadlecová Kamil LangPavel Lhoták |
| Affiliation: | a Department of Organic Chemistry, Prague Institute of Chemical Technology, Technická 5, 166 28 Prague 6, Czech Republic b Department of Physical Chemistry, Prague Institute of Chemical Technology, Technická 5, 166 28 Prague 6, Czech Republic c Institute of Inorganic Chemistry of the Academy of Sciences of the Czech Republic, v.v.i., 250 68 ?e?, Czech Republic |
| Abstract: | Calix4]arenes bearing tetrathiafulvalene (TTF) moieties appended to the upper rim via the amidic functions were synthesized and used for 1H NMR and UV/Vis complexation studies towards selected anions. It was found that the complexation affinity towards H2PO4− dramatically depends on the substitution pattern of the calixarene moiety. As a result, the proximally disubstituted derivative has a complexation constant by two orders of magnitude higher than the distally disubstituted analogue. The differences between proximal and distal receptors were also documented by their behaviour during the oxidation of the attached TTF units. |
| Keywords: | Calix[4]arene Tetrathiafulvalene Anion recognition Receptor NMR titration UV/vis spectroscopy |
| 本文献已被 ScienceDirect 等数据库收录！ | |