1264251-40-2Relevant academic research and scientific papers
New photochromic dithienylethenes through a click chemistry approach
Tosic, Oliver,Mattay, Jochen
experimental part, p. 371 - 376 (2011/02/28)
Symmetric dithienylethenes 9-12 bearing a variety of substituents were synthesized by a click chemistry approach. The starting material, diacetylene 4, was obtained through Wittig reaction of dialdehyde 1 with dibromomethyltriphenylphosphonium bromide (2) and subsequent treatment with a lithium base (Corey-Fuchs reaction). Triazoles 11 and 12 with covalently linked fluorophore moieties show reversible quenching of fluorescence in solution. A series of functional photochromic compounds based on dithienylethenes has been synthesized by utilizing a copper-catalyzed azide-alkyne click chemistry approach. Dithienylethenes substituted with fluorophores show reversible photoswitching of fluorescence upon irradiation with UV/Vis light. Copyright
