Photo- and acid induced multicolor switches based on pyridine-containing perfluorodiarylethene derivatives. Issue 15 (14th April 2016)

• Record Type: Journal Article
• Authors: Zheng, Chunhong; Liu, Hongliang; Fan, Congbin; Pu, Shouzhi
• Is Part Of: Tetrahedron. Volume 72:Issue 15(2016)
• Page Start: 1868
• Page End: 1872
• Publication Date: 2016-04-14
• Subjects: Photochromism -- Perfluorodiarylethene -- Heteroatom contact -- Acidichromism -- Quantum yield; Chemistry, Organic -- Periodicals; 547.005
• DOI: 10.1016/j.tet.2016.02.046
• Languages: English
• ISSNs: 0040-4020

Abstract

Abstract: 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. Graphical abstract: