设计、合成了一种基于巴比妥酸衍生物的具有D-π-A结构的光学探针3。该探针能够作为一种高度灵敏和选择性的次氯酸指示剂，快速实现对次氯酸的比色和荧光信号(开-关)的双响应(约15 s)。推测的响应机制是ClO^-与C=C之间发生了亲电加成和氧化裂解反应，导致探针的D-π-A结构遭到破坏，从而阻断了其分子内电荷转移(intramolecular charge transfer，ICT)进程。探针只需一步即可合成，同时具有红光发射(628 nm)和较大的斯托克斯位移(158 nm)，检测限(limit of detection，LOD)低至14 nmol·L^-1。此外，探针还表现出低细胞毒性，并成功应用于活细胞成像。

A collection of ordered-disordered Bi₂WO₆ homojunction catalysts was prepared in-situ through a facile one-step hydrothermal process, and their photocatalytic nitrogen fixation to synthesize ammonia performance was evaluated. Results showed that ordered-disordered Bi₂WO₆ (OD-2) obtained by adding 1.5 mL of ethylene glycol during preparation exhibited the optimal nitrogen fixation performance, with a nitrogen fixation rate of 114.92 μmol·g^-1·h^-1. However, its crystal counterpart, Bi₂WO₆ (BWO), lacked nitrogen-fixation activity. In-situ diffuse reflectance-Fourier transform infrared technique (DR-FTIR), electrochemical tests, and energy band structure analysis confirmed that the surface disordered structure in OD-2 not only promoted nitrogen activation but also enabled the effective separation of photogenerated electron-hole pairs at the ordered-disordered interface, facilitating the interface electrons transfer to the surface disordered structure of OD-2 and reacting with N₂ adsorbed on the disordered structure, thereby promoting the smooth progress of the nitrogen fixation reaction.