The development of near-infrared difluoroboron complexes of curcumin analogues to specifically detect one or both analytes in the solid state is highly desirable. Herein, three novel BF₂-curcumin analogues with an extended π-conjugation (TBN, TBT and NBN) have been rationally designed and developed, in which the dimethylamino group acted as electron donator (D) and the proton-binding site, and the BF₂bdk moiety not only functioned as electron acceptor (A) but also responded to amine vapors. And they exhibited excellent solvent-dependent photophysical properties in solutions and PMMA film state. Moreover, BF₂-curcumin analogues TBN and NBN showed an unprecedented “dual-dual” sensing performance (the first dual: simultaneous response to both acid and amine vapors; the second dual: fluorescent turn-on sensing and colorimetric sensing) in solutions and PMMA film state. Therefore, they would be utilized as multifunctional sensing materials for specific detection towards volatile acid and amine vapors in environmental and biological systems.

迫切需要开发姜黄素类似物的近红外二氟硼配合物以特异性检测一种或两种固态分析物。在此，已经合理地设计和开发了三种具有扩展的π-共轭作用的新型BF _2-姜黄素类似物（TBN，TBT和NBN），其中二甲氨基充当电子给体（D）和质子结合位点， BF ₂ bdk部分不仅起电子受体（A）的作用，而且还对胺蒸气起反应。而且它们在溶液和PMMA薄膜状态下表现出优异的溶剂依赖性光物理性质。此外，BF _2-姜黄素类似物TBN和NBN在溶液和PMMA膜状态下，显示出前所未有的“双重”感测性能（第一个双重：同时响应酸和胺蒸气；第二个双重：荧光导通和比色传感）。因此，它们将被用作多功能传感材料，用于对环境和生物系统中的挥发性酸和胺蒸气进行特异性检测。