2-Substituted 7-oxo-7,11b-dihydrodibenzochromenilium derivatives (1-ArPyl+s) undergo reversible changes in near-infrared absorption when Ar = ferrocenyl, and complete onâoff switching of luminescence when Ar = p-tolyl, m-tolyl, or phenyl, by the reaction with methanol or methoxide ion and with acid.
2-取代的 7-oxo-7,11b-二氢二苯并铬衍生物 (1-ArPyl+s) 当 Ar = 二茂铁基时,近红外吸收发生可逆变化,当 Ar = 对甲苯基时,发光完全开关,m -甲苯基或苯基,通过与甲醇或甲醇根离子以及与酸反应而得到。