Interactions of dithiolated tetraazamacrocyclic copper(II) and nickel(II) complexes self-assembled on gold electrodes with pi-electron deficient molecules in solution.
Self-assembled monolayers of dithiolated neutral monotetraazamacrocyclic complexes of copper(II) and nickel(II) can provide molecularly defined platforms for the formation of a pseudorotaxane-like nanostructures on the gold electrode surface. We propose these complexes as pi-donor building blocks for the construction of new molecular devices. We show that these perpendicularly oriented macrocyclic complexes anchored to the electrode surface act as pi-electron rich species interacting with pi-electron deficient compounds dissolved in solution, such as fluorine derivatives of tetracyanoquinodimethane (F(4)TCNQ) or a charged bismacrocyclic tetraaza complex of copper(II). The interactions of the surface immobilized macrocyclic complexes with F(4)TCNQ and with ring-shaped acceptor molecules are monitored and characterized by linear scan voltammetry. The interactions with the bismacrocyclic compound lead to a new pseudorotaxane array supported on the electrode surface and switched on and off by the application of appropriate potentials.
Wawrzyniak
Urszula Elzbieta
UE
Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland.
Woźny
Mateusz
M
Mames
Iwona
I
Pałys
Barbara
B
Korybut-Daszkiewicz
Bohdan
B
Bilewicz
Renata
R