Developing new visible light-triggered NIR photochromic sensors for the accurate detection of volatile amine vapors in the solid state is highly desirable. Herein, three novel dithienylethene-bridged difluoroboron β-diketonate dyes Di-BF₂bdk-DTE1-Di-BF₂bdk-DTE3, in which BF₂bdk group not only functions as electron acceptor but also responds to amine vapors, have been developed. Upon alternating irradiation with blue light (460–470 nm) and near-infrared light (760–770 nm), they displayed excellent NIR photochromism and fluorescent switching behaviors in toluene and in the PMMA film. Moreover, they showed an unprecedented triple sensing performance for volatile n-propylamine vapor in the PMMA film state (fluorescent-colorimetric-colorimetric). Therefore, they would be utilized as triple sensing membranes for selective detection towards volatile primary or secondary amine vapors in environmental and biological systems.

迫切需要开发新的可见光触发的近红外光致变色传感器，以精确检测固态中的挥发性胺蒸气。在此，已经开发了三种新颖的二噻吩乙烯桥连的二氟硼β-二酮硼酸酯染料Di-BF ₂ bdk-DTE1-Di-BF ₂ bdk-DTE3，其中BF ₂ bdk基团不仅起电子受体的作用，而且对胺蒸气有反应。 。在用蓝光（460–470 nm）和近红外光（760–770 nm）交替照射后，它们在甲苯和PMMA膜中显示出出色的NIR光致变色和荧光转换行为。此外，它们表现出对挥发性前所未有的三重感测性能Ñ-丙胺蒸气处于PMMA薄膜状态（荧光比色比色）。因此，它们将被用作三重感应膜，用于选择性检测环境和生物系统中的挥发性伯胺或仲胺蒸气。