Hydrogen-bonded organic frameworks (HOFs) represent an emerging class of porous crystalline materials, have attracted growing interest in the field of fluorescence sensing area due to their distinctive luminescent characteristics, large surface area and abundant recognition sites. Herein, the porous material HOF-BTB-NH₂ featuring one-dimensional pore structure was successfully synthesized through hydrogen-bonding self-assembly using the organic building molecule 2,4,6-Tris(4-carboxyphenyl)aniline (BTB-NH₂) in methanol. HOF-BTB-NH₂ showed excellent sensitivity and selectivity for metal ion Cu²⁺ and anion CO₃²⁻, and the limits of detection (LOD) reached 0.23 μM and 0.33 μM, respectively. In addition, HOF-BTB-NH₂ was employed as a biosensing material for the highly selective and sensitive detection of dopamine (DA). The synthesis of porous HOF-BTB-NH₂ and the excellent sensing performance greatly expanded the application of hydrogen-bonded organic framework materials in fluorescence sensing.

中文翻译：

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通过氢键有机框架对离子和多巴胺分子进行高灵敏度检测

氢键有机框架（HOF）代表一类新兴的多孔晶体材料，由于其独特的发光特性、大的表面积和丰富的识别位点，在荧光传感领域引起了越来越多的兴趣。在此，利用有机建筑分子2,4,6-三(4-羧基苯基)苯胺（BTB-NH _{2 ）}通过氢键自组装成功合成了具有一维孔结构的多孔材料HOF-BTB- NH ₂）在甲醇中。HOF-BTB-NH ₂对金属离子Cu ²⁺和阴离子CO ₃ ²⁻表现出优异的灵敏度和选择性，检测限（LOD）分别达到0.23 μM和0.33 μM。此外，HOF-BTB-NH ₂被用作生物传感材料，用于高选择性和灵敏地检测多巴胺（DA）。多孔HOF-BTB-NH ₂的合成及其优异的传感性能极大地拓展了氢键有机骨架材料在荧光传感中的应用。