TY - JOUR
T1 - Synthesis of Luminescent 2-7 Disubstituted Silafluorenes with alkynyl-carbazole, -phenanthrene, and -benzaldehyde substituents
AU - Germann, Stephan
AU - Jarrett, Shelby J.
AU - Dupureur, Cynthia M.
AU - Rath, Nigam P.
AU - Gallaher, Ethan
AU - Wilking, Janet
PY - 2020/11/15
Y1 - 2020/11/15
N2 - 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.
AB - 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.
UR - https://doi.org/10.1016/J.JORGANCHEM.2020.121514
U2 - 10.1016/j.jorganchem.2020.121514
DO - 10.1016/j.jorganchem.2020.121514
M3 - Article
VL - 927
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
ER -