Seminaphthorhodafluor (SNARF) Schiff base (SNARF-SB) bridged periodic mesoporous organosilicas (SSPMOs) with “turn-on” fluorescence enhancement for sensing Cu²⁺ were synthesized via a template-directed co-condensation method. Small-angle x-ray scattering (SAXS) patterns, high resolution transmission electron microscope (HRTEM) images, and N₂ adsorption–desorption isotherms indicated the presence of mesoporous structure in the SSPMOs. FT-IR spectra and ²⁹Si MAS NMR data confirmed the successful incorporation of bridged organic groups in the framework of SSPMOs. The luminous properties that SSPMOs had a selective response to Cu²⁺ were investigated by UV–Vis absorption spectroscopy and fluorescence spectroscopy. The limit of detection (LOD) was 5.1 × 10^–7 M and binding stoichiometry was determined 1:1 between SNARF-SB and Cu²⁺. The fluorescence enhancement of SSPMOs towards Cu²⁺ was induced by ring-opening of the spirolactam in SNARF-SB in framework of SSPMOs, which was confirmed by FT-IR spectra of SNARF-SB with Cu²⁺. Moreover, SSPMOs have improved fluorescence lifetimes compared with that of SNARF-SB. Therefore, SSPMOs can be a progressive chemical sensor for Cu²⁺ due to its high selectivity, recyclability, and stability.

通过模板导向共缩合法合成了具有“开启”荧光增强功能的 Seminaphthorhodafluor (SNARF) 席夫碱 (SNARF-SB) 桥接周期性介孔有机硅 (SSPMO)，用于检测 Cu ^{2+ 。}小角度 X 射线散射 (SAXS) 图案、高分辨率透射电子显微镜 (HRTEM) 图像和 N ₂吸附-解吸等温线表明 SSPMO 中存在介孔结构。FT-IR 光谱和²⁹ Si MAS NMR 数据证实了桥联有机基团在 SSPMO 框架中的成功结合。SSPMOs对Cu ^{2+选择性响应的发光特性}通过紫外-可见吸收光谱和荧光光谱对其进行了研究。检测限 (LOD) 为 5.1 × 10 ^–7  M，SNARF-SB 和 Cu ²⁺之间的结合化学计量比为 1:1 。SSPMOs 对Cu ²⁺的荧光增强是由SSPMOs 骨架中的SNARF-SB 中的螺内酰胺开环引起的，SNARF-SB 与Cu ²⁺的FT-IR 光谱证实了这一点。此外，与 SNARF-SB 相比，SSPMO 的荧光寿命有所提高。因此，SSPMOs由于其高选择性、可回收性和稳定性，可以成为 Cu ^{2+的先进化学传感器。}