Photo- and acid induced multicolor switches based on pyridine-containing perfluorodiarylethene derivatives

Add time:08/05/2019    Source:sciencedirect.com

Two novel perfluorodiarylethenes which contains a 2-methylbenzo[b]furane and a modified pyridine moiety were synthesized. Such structure may induce F⋯N or S⋯N heteroatom contact which was newly observed. Experiments results showed that the photocyclization quantum yield exhibited a strong correlation with the two weak intramolecular interactions, which behaved solvent independency. Moreover, both novel pyridine-perfluorodiarylethenes exhibited an obvious acidichromism, and the absorption maxima of their closed-ring isomers showed a prominent bathochromic shift to the near-infrared region.

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