Abstract
A blue-red reversible optical switch was created by combining EuIII, pyridine, and a fluorescent organic chromophore. In the initial stage Ch-EuIII interaction was responsible for the EuIII emission quenching. The irradiation of pyridine brought about its protonation and formation of the hydrogen-bonded aggregates. The high electron-accepting ability of pyridinium cations lead to donor-acceptor interaction with the chromophore, and quenching of fluorescence in the presence of the EuCl3 or (Et)4NCl.
Original language | American English |
---|---|
Pages (from-to) | 1669-1671 |
Number of pages | 3 |
Journal | Advanced Materials |
Volume | 12 |
Issue number | 22 |
DOIs | |
State | Published - 16 Nov 2000 |