Binding of fluorescent molecules to the porous matrix through noncovalent interactions will synergistically expand their application spectrum. In this regard, we report an integrative self-assembly of molecule 1 with benzothiadizole and 9,9-dihexyl fluorene units, and covalent organic frameworks (COFs) via an emulsion-modulated polymerization process, within which molecules of 1 are able to interact with the scaffolds of COFs through CH-π interactions. Thus the π-π interactions between the fluorescent molecules are largely suppressed, giving rise to their remarkable monomer-like optical properties. Of particular interest is that, given by the specific interaction between COFs and a nerve agent simulant diethyl chlorophosphite (DCP), these assembled composites show the ability of ultrasensitive detection of DCP with a detection limit of ∼40 ppb. Moreover, the present integrative assembly strategy can be extended to encapsulate multiple fluorescent molecules, enabling the assemblies with white light emission. Our results highlight opportunities for the development of highly emissive porous materials by molecular self-assembly of fluorophores and molecular units of COFs.

通过非共价相互作用将荧光分子与多孔基质结合将协同扩大其应用范围。在这方面，我们用benzothiadizole和9,9-二己基芴单元和共价有机骨架（COF的）报告一个综合自组装的分子1经由乳液调节的聚合过程，其中1的分子能够通过CH-π相互作用与COF支架相互作用。因此，荧光分子之间的π-π相互作用被大大抑制，从而产生了其显着的单体状光学性质。特别令人感兴趣的是，由于COF与神经毒剂模拟物亚磷酸二乙酯（DCP）之间的特定相互作用，这些组装的复合材料显示了DCP的超灵敏检测能力，检测极限约为40 ppb。此外，本集成组装策略可以扩展为封装多个荧光分子，从而使组装件具有白光发射。