Modulation of color change and photocyclization of diarylethene with metal complex

Abstract

Modulation of color change and photocyclization of diarylethene with metal complex is described. A diarylethene derivative with 4‐(ethylideneamino) phenol group 1a is prepared and photochromic behavior is investigated. It is found that 1a exhibits ring‐opening and ring‐closing photoisomerization with UV/Vis light irradiation in solution. Addition of Cu(OAc)2 to the solution of 1a produces a metal complex 1a–Cu, which generates not only marked color change but also significant promotion in photocyclization. Copyright © 2010 John Wiley & Sons, Ltd.

Ring opening/closure reactions of novel diheteroarylethenes derivatives. Solvent effects

“…The focus has been on the influence of electron‐withdrawing groups, such as fluorine or chlorine atoms, and they observed that these halide substituents and their positions have a significant effect on the properties of the diarylethene compounds. A more recent study reports that the presence of phenol groups in the diheteroarylethenes produces a metal complex with Cu 2+ and other divalent metals, which generates not only a marked color change in the spectra (red displacement) of the closed isomer, but also significant promotion of photocyclization.…”

Facile synthesis and photochromic properties of diarylethene‐containing terpyridine and its transition metal (Zn2+/Co2+/Ru2+) complexes

“…They can provide new properties deriving from the combination of redox, optical, and magnetic properties of the metal complexes. Through combining a photochromic moiety with an organometallic compound, the photochromic properties could be simply modulated by different coordinating metal centers . In addition, the metal terpyridine (TPY) complexes have excellent stability and remarkably high binding affinity towards transition metal ions, showing photophysical/photochemical properties, which have led to the development of various luminescent metal compounds and sensitizers for photovoltaic devices .…”