In this work, two structurally novel isomeric diarylethene chemosensors based on a styrene-linked pyrido[2,3-b]pyrazine unit were synthesized by using Heck coupling reaction. Interestingly, the two reported chemosensors exhibited quick colorimetric sequential responses towards Hg²⁺ and then Sn²⁺. Furthermore, the fluorescence intensity of the diarylethene-mercury dyad 1O′ was significantly quenched due to the formation of a new complex 1O-Hg²⁺. 1O-Hg²⁺ could be used as a new platform for rapid detection of Sn²⁺, which involved a conspicuous fluorescence enhancement in the detection progress. Based on the fact that the fluorescence of luminogen 1O could be effectively adjusted by the stimulations of light and metal ions, an integrated combinational logic circuit was constructed with 365 nm UV light, Hg²⁺ and Sn²⁺ as input signals and the fluorescence intensity at 560 nm as output signals.

在这项工作中，通过使用 Heck 偶联反应合成了两种基于苯乙烯连接的吡啶并 [2,3- b ] 吡嗪单元的结构新颖的异构二芳基乙烯化学传感器。有趣的是，两个报道的化学传感器对 Hg ²⁺和 Sn ²⁺表现出快速的比色顺序响应。此外，由于形成了新的配合物1O-Hg ²⁺，二芳基乙烯-汞二元组1O'的荧光强度显着猝灭。1O-Hg ²⁺可作为快速检测Sn ²⁺的新平台，在检测过程中涉及显着的荧光增强。基于光和金属离子的刺激可以有效调节发光原1O的荧光，构建了以365 nm紫外光、Hg ²⁺和Sn ²⁺为输入信号和荧光强度的集成组合逻辑电路。在 560 nm 作为输出信号。