Aggregation-Induced Emission of a Two-Dimensional Covalent Organic Framework for Molecular Recognition in Quantitative Metrics AITranslate

Basic Information:

DOI：https://doi.org/10.1021/acsapm.3c00388

Chinese Library Classification Number:

Citation Information:

Fluorescent porous materials have been intensively examined owing to their versatile applications in molecular recognition and chemical sensing. Although many studies on luminescent two-dimensional (2D) covalent organic frameworks (COFs) for chemical sensing applications have been reported, precise linear control of the aggregation-induced luminescence effects in 2D COFs has been rarely achieved. Hereby, a highly crystalline 2D COF material bearing a tetraphenylethylene (TPE) molecule as a molecular rotor with a responsive fluorescence behavior is reported. Due to the varying extent of motion regulation of the TPE rotor with different volatile organic compounds (VOCs), the as-obtained fluorescent 2D COFs exhibit excellent sensitivity and selectivity in the qualitative and quantitative analysis of volatile organic compounds (VOCs). Notably, the fluorescence intensity derived from the aggregation-induced emission (AIE) is in a linear relationship with VOCs across a wide concentration range (0–3.0 × 103 mM), indicating their potential as effective VOC detectors.