Limitations on the use of UV/Vis spectroscopy for the evaluation of conjugation effectiveness.
A detailed study on N,N-dimethylanilino donor-substituted cyanoethynylethenes shows that there is no correlation between the effectiveness of the donor-acceptor conjugation pathway and the lowest-energy transition in the UV/Vis absorption spectrum.
Laboratorium für Organische Chemie, ETH-Hönggerberg, HCI, CH-8093, Zürich, Switzerland. diederich@org.chem.ethz.ch
Nicolle N P
NN
Moonen
François
F
Diederich