Influence of the Bridging Elements on the Optical Properties of Linked 9,10-Dihydro-9,10-diboraanthracenes
29/noviembre/2012
Paulina Levario
Starting from the monofunctionalized 9,10-dihydro-9,10-diboraanthracene derivatives MesB(C6H4)2BX (X = H, Br), the bridged systems MesB(C6H4)2B–L–B(C6H4)2BMes have been synthesized with L = −C(H)═C(H)(p-C6Me4)C(H)═C(H)– (5), −C≡C(p-C6Me4)C≡C– (6), and −(p-C6H4)(p-C6Me4)(p-C6H4)– (7). The compounds were characterized by NMR, IR, UV/vis, and fluorescence spectroscopy. The vinyl- and phenylboranes 5 and 7 are pale yellow solids, whereas the alkynylborane 6 possesses a bright yellow color. The emission maxima of5–7 in toluene are λmax(em) 477, 460, and 461 nm with quantum yields 
f of 0.02, 0.30, and 0.04, respectively. Alkynylborane 6 was found to be the least air- and moisture-sensitive of the three derivatives.
f of 0.02, 0.30, and 0.04, respectively. Alkynylborane 6 was found to be the least air- and moisture-sensitive of the three derivatives.
Para mayor información:
Influence of the Bridging Elements on the Optical Properties of Linked 9,10-Dihydro-9,10-diboraanthracenes
Estera Januszewski, Michael Bolte, Hans-Wolfram Lerner, and Matthias Wagner
Organometallics Article ASAP
DOI: 10.1021/om300990z
Publication Date (Web): November 20, 2012
Copyright © 2012 American Chemical Society
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