Herein, we report an ammonia-responsive of lanthanide (Eu(Sal)₃, Sal = salicylic acid) complexes hydrogel sensors based on the amine molecule affecting the energy transfer process. In this system, the ammonia stimulation causes the coordination and decomposition of Eu(Sal)₃ in the hydrogel, thus leading the fluorescence quenching and recovery of Sal in the ammonia atmosphere. Furthermore, the EuL_n-Fm/PVA hydrogel composed of Eu(Sal)₃ and Eu(TTA)₃ complexes (TTA = 2-Thenoyltrifluoroacetone, L = Sal and TTA, Fm = formamide, n = 1-3) was prepared by an one-pot process, which achieves the continuous detection for ammonia gas. Meanwhile, EuL_n-Fm/PVA hydrogel also achieved diverse responses for ammonia gas. This device could be a promising strategy for developing fluorescence hydrogels with potential applications due to its desirable advantages such as simple preparation, cost-effectiveness, etc..

在这里，我们报告了基于胺分子的氨响应镧系元素（Eu（Sal）₃，Sal =水杨酸）复合水凝胶传感器，影响能量转移过程。在该系统中，氨的刺激导致水凝胶中Eu（Sal）₃的配位和分解，从而导致荧光猝灭和氨气氛中Sal的回收。此外，由Eu（Sal）₃和Eu（TTA）₃配合物（TTA = 2-Thenoyltrifluoroacetone，L = Sal和TTA，Fm =甲酰胺，n = 1-3）组成的EuL _n -Fm / PVA水凝胶的制备如下：一锅法，可连续检测氨气。同时，EUL _ñ-Fm / PVA水凝胶对氨气也有多种反应。由于其所需的优点，例如制备简单，成本效益高等，该装置可能是开发具有潜在用途的荧光水凝胶的有前途的策略。