Abstract
Covalent organic frameworks (COFs) are an emerging type of porous crystalline polymers that are built by light elements (typically H, B, C, N, O and Si) via organic covalent bonds. Currently, COFs have been exploited for biomedical application due to their unique properties, such as structural diversity, intrinsic stability, ordered porosity, tailor-made functions, and excellent adsorption features. In particular, COFs are increasingly popular in the construction of biosensors for the detection of various disease biomarkers, and have been extended to the clinical applicability for early diagnostics, medication instruction and prognostic monitoring of diseases. In this review, we mainly summarize the recent advances on COFs-based biosensors for the assay of disease biomarkers with clinical applications. According to the features of molecular structure, disease biomarkers are classified into four categories, including small biological ions/molecules, proteins, nucleic acids, and cancer cells/exosomes. Impressively, COFs-based biosensors present a bright prospect in clinical diagnosis of diseases in both hospital-end and household-end utilization.
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