作者:Jürgen Gerold、Uta Holzenkamp、Herbert Meier
DOI:10.1002/1099-0690(200107)2001:14<2757::aid-ejoc2757>3.0.co;2-2
日期:2001.7
oligosquaraines 1−5, with stilbenoid scaffolds, were prepared by multistep syntheses in which the final steps consisted of condensation reactions between the semisquaric acid 21 and multiple resorcinols 12b−15b and 17b. The target compounds exhibit intense (ϵ > 250000 L·mol−1·cm−1) and sharp absorption bands with maxima between 687 to 778 nm, depending on the conjugation in the stilbenoid scaffold. Comparison with
具有芪类支架的低聚方酸 1-5 是通过多步合成制备的,其中最后一步由半方酸 21 与多种间苯二酚 12b-15b 和 17b 之间的缩合反应组成。目标化合物表现出强烈的 (ϵ > 250000 L·mol−1·cm−1) 和尖锐的吸收带,最大值在 687 到 778 nm 之间,这取决于芪类支架中的共轭。与作为模型化合物的单方酸 6 的比较揭示了不同供体-受体-供体部分之间的分子内相互作用,这会增加吸收强度。