We designed and synthesized a new Schiff base probe, which incorporated the salicylaldehyde-analogue α-cyanostilbene and benzophenone hydrazone by the imine linkage. Its chemical structure was verified by FT-IR, MALDI-TOF-MS, HR-MS and ¹H/¹³C NMR technologies. It could exhibit a red fluorescence based on the synergistical effects of aggregation-induce emission (AIE), excited-state intramolecular proton transfer (ESIPT) and twisted intramolecular charge-transfer (TICT) in the aggregation or solid states. Interestingly, the TLC-based test strip loaded with the target compound showed the reversible fluorescence response to amine/acid vapor and on-site visual fluorescence quenching response to Fe³⁺. In THF/water mixtures (f_w = 90%, 10 µM, pH = 7.4), the detection limit (DL) and the binding constant (K_a) of the developed probe towards Fe³⁺ were evaluated as 5.50 × 10^− 8 M and 1.69 × 10⁵, respectively. The developed probe was successfully applied for the detection of Fe³⁺ with practical, reliable, and satisfying results.

我们设计并合成了一种新的席夫碱探针，该探针通过亚胺键结合了水杨醛类似物α-氰芪和二苯甲酮腙。其化学结构通过FT-IR、MALDI-TOF-MS、HR-MS和¹ H/ ¹³ C NMR技术验证。它可以基于聚集或固态下聚集诱导发射（AIE）、激发态分子内质子转移（ESIPT）和扭曲分子内电荷转移（TICT）的协同效应而表现出红色荧光。有趣的是，装载有目标化合物的基于TLC的测试条显示出对胺/酸蒸气的可逆荧光响应和对Fe ^{3+ 的}现场视觉荧光猝灭响应。在 THF/水混合物（fw = 90%、10 µM _、 pH = 7.4）中，开发的探针对 Fe ³⁺的检测限 (DL) 和结合常数 ( Ka ₎评估为 5.50 × 10 ^{−分别为8M}和1.69×10 ⁵。研制的探针成功应用于Fe ³⁺的检测，结果实用、可靠、令人满意。