Near-Infrared Absorbing Azo Dyes: Synthesis and X-ray Crystallographic and Spectral Characterization of Monoazopyrroles, Bisazopyrroles, and a Boron−Azopyrrole Complex
作者:Yan Li、Brian O. Patrick、David Dolphin
DOI:10.1021/jo9003019
日期:2009.8.7
Å), and the BF2−azopyrrole complex. Their maximum absorptions shift bathochromically in the sequence of monoazopyrrole (1a: 443 nm), bisazopyrroles [2(a−d), 3(a−d), 5: 486−615 nm], and the BF2−azopyrrole complex. These results are important for the design of near-infraredabsorbing azo dyes and suggest an efficient path for the preparation of near-infraredabsorbing azo dyes by effectively enhancing