of the widely employed emitter 2,4,5,6‐tetra(9H‐carbazol‐9‐yl)isophthalonitrile (4CzIPN) by replacing one or both nitrile acceptors with oxadiazole groups via a tetrazole intermediate. This allows the introduction of various functional groups including halides, alkynes, alkenes, nitriles, esters, ethers and a protected amino acid while preserving the thermally activated delayed fluorescence (TADF) properties
我们展示了广泛使用的发射器2,4,5,6-tetra(9 H-
咔唑-9-基)
间苯二甲腈(4CzI
PN),方法是通过
四唑中间体用乙二唑基团取代一个或两个腈受体。这允许引入各种官能团,包括卤化物,
炔烃,烯烃,腈,酯,醚和受保护的
氨基酸,同时保留热活化的延迟荧光(TADF)特性。取代基控制相应发射体的最大发射,范围在472-527 nm之间,并显示高达85%的高固态光致发光量子产率。两种化合物(4CzCNOXDtBu和4CzdOXDtBu,被单-和双-恶二唑取代的4CzI
PN)的TADF发射通过与时间和温度相关的光致发光来详细表征。-2。