作者:Feng Li Laughlin、Nihal Deligonul、Arnold L. Rheingold、James A. Golen、Brynna J. Laughlin、Rhett C. Smith、John D. Protasiewicz
DOI:10.1021/om400838g
日期:2013.12.9
An air-stable primary phosphine, 2,6-diphosphinonaphthalene-1,5-diol (4), has been synthesized and structurally characterized. A series of pi-conjugated heteroacenes containing two phosphaalkene (P=C) units, 2,7-R-2-naphtho[1,2-d:5,6-d']bi(soxaphosphole)s [R-2-NBOP, R = Bu-t (5a), Ad (513), and Ph (5c)], have been synthesized from reactions of 4 and benzimidoyl chlorides. These novel fluorescent analogues of organic acenes were characterized by multinuclear NMR, UV-vis, and fluorescence spectroscopy, cyclic voltammetry, and single-crystal X-ray diffraction experiments.