作者:Chenyu Li、Ding Wang、Wenhao Xue、Jufang Peng、Tao Wang、Zunting Zhang
DOI:10.1016/j.dyepig.2020.108956
日期:2021.2
New vertically π-expanded coumarins dyes 1-phenynyl-2H-phenaleno[1,2,3-de] chromen-2-ones and 1-cyano-2H-phenaleno[1,2,3-de]chromen-2-ones were synthesized using 1-bromo-2H-phenaleno[1,2,3-de]chromen-2-one with arylacetylene or cyano reagent via the Sonogashira reaction and cyanide substitution reaction, and obtained in high yields up to 85% from 1-bromo-2H-phenaleno [1,2,3-de]chromen-2-one. The photophysical
新的垂直π扩展香豆素染料1-phenynyl-2 H -phenaleno [1,2,3- de ] chromen -2-ones和1- cyano - 2H -phenaleno [1,2,3-de] chromen-2-用1-溴-2H-苯并[1,2,3- de ] chromen -2-one与芳基乙炔或氰基试剂通过Sonogashira反应和氰化物取代反应合成1,2-苯并[1,2,3- de ] chromen -2-one,从1到85%的高收率-bromo -2 H -phenaleno [1,2,3- de ] chromen -2-one。光物理研究表明,1-取代的-2 H - phenaleno [1,2,3- de ] chromen -2- one具有较大的斯托克斯位移(4898 cm -1),出色的荧光量子产率(Φf= 0.80)以及显着的红移。在量子化学计算的基础上