本文报道了一种新型中位-吡啶取代的硼-二吡咯亚甲基(BDP)染料的合成与晶体结构表征,发现中位-吡啶环与因达省平面几乎正交,其二面角为88.2°。同时对它的吸收和稳态荧光性质研究表明:当溶液的酸性增强时,化合物的荧光减弱,pKa为2.24。该化合物在可见光激发下,可以作为比较灵敏的pH荧光探针。 This paper reports the synthesis and crystal structure characterization of a novel mid-pyridine-substituted boron-dipyrromethene (BDP) dye. It was found that the mid-pyridine ring is almost orthogonal to the Inventia plane and the dihedral angle is 88.2 °. At the same time its absorption and steady-state fluorescence properties showed that: when the acidity of the solution increased, the fluorescence of the compound weakened, pKa was 2.24. The compound under visible light excitation, can be used as a more sensitive pH fluorescent probe.