Article
Synthesis of Luminescent 2-7 Disubstituted Silafluorenes with alkynyl-carbazole, -phenanthrene, and -benzaldehyde substituents
Journal of Organometallic Chemistry
(2020)
Abstract
Three new fluorescent 2,7-alkynyl(aryl)-3,6-dimethoxy-9,9-diphenylsilafluorenes have been synthesized using a Pd-catalyzed Sonogashira coupling reaction to incorporate alkynyl(aryl) groups at the 2,7-positions of the ring. The substituents include 9-ethynylcarbazole, 4-ethynylbenzaldehyde, and 3-ethynylphenanthrene. These new compounds were characterized utilizing X-ray crystallography as well as multinuclear NMR, mass spectrometry, UV-Vis, and fluorescence spectroscopic techniques. These silafluorenes, which are yellow crystals in the solid state, showed high quantum yields with moderate molar extinction coefficients in dichloromethane and strong blue emission. Key words: silafluorene, luminescence.
Disciplines
Publication Date
November, 2020
DOI
10.1016/j.jorganchem.2020.121514
Citation Information
Stephan Germann, Shelby J. Jarrett, Cynthia Dupureur, Nigam P. Rath, et al.. "Synthesis of Luminescent 2-7 Disubstituted Silafluorenes with alkynyl-carbazole, -phenanthrene, and -benzaldehyde substituents" Journal of Organometallic Chemistry Vol. 927 (2020) Available at: http://works.bepress.com/cynthia-dupureur/57/