“…Among them, 1,3,6,8-tetrakis ( p -benzoic acid) pyrene, abbreviated as H 4 TBAPy, is a planar molecule featuring four symmetric carboxylic acid groups, forming an expansive π-conjugated system. Under certain conditions, H 4 TBAPy can self-assemble through hydrogen bonding and strong π–π stacking to form highly crystalline porous hydrogen-bonded organic frameworks, known as HOF-101. , HOF-101 possesses a moderate band gap of 2.3–2.4 eV, exhibiting significant visible-light absorption. , Meanwhile, its planar molecular structure features a large π-conjugated system, resulting in an excellent electron transport capability. , To further promote the photocurrent output, polydopamine (PDA) was utilized. As a biocompatible material, PDA exhibits a strong affinity for various substrate surfaces and possesses abundant active functional groups, which serve as essential connectors for biomolecules. , With its remarkable light absorption ability spanning the range of 200–800 nm, PDA acts as an efficient electron donor, significantly enhancing the photocurrent response. , Besides, PDA-modified surfaces demonstrate excellent hydrophilicity, facilitating their resistance to biofouling.…”