The development of porous organic materials for removing radiotoxic iodine from nuclear plant waste is significantly relevant to environmental remediation as well as the detection of trace amounts of nitroexplosive picric acid for environmental safety is challenging. To achieve reversible iodine adsorption by the porous material, we have synthesized a highly stable porous organic polymer POF-1 by Schiff base condensation of tris(4-aminophenyl)methane and 2,2′-bithiophene-5,5′-dicarbaxaldehyde under microwave irradiation. POF-1 showed high affinity towards iodine adsorption due to electron-rich sulfur and nitrogen atoms in the porous structure which interact with iodine and form polyiodide ions by electrostatic interactions. POF-1 showed a remarkable iodine uptake capacity of 4.25 g g⁻¹ in the vapor phase and could efficiently remove iodine from an iodine-cyclohexane solution with an adsorption efficiency of 141.0 mg/L. The iodine adsorption follows Langmuir's isothermal model i.e. monolayer adsorption and Pseudo second-order kinetics. POF-1 exhibited good recyclability towards reversible iodine capture even after five cycles. Furthermore, the luminescence characteristic of POF-1 has been employed for the selective detection of picric acid with high sensitivity with a detection limit of 8 μM among a range of nitroaromatic. The Fluorescence quenching mechanism is mainly attributed to photo-induced electron transfer and the inner filter effect.

开发用于去除核电站废物中放射性毒性碘的多孔有机材料与环境修复密切相关，并且检测微量硝基爆炸性苦味酸对环境安全也具有挑战性。为了实现多孔材料对碘的可逆吸附，我们通过三(4-氨基苯基)甲烷和2,2'-联噻吩-5,5'-二甲醛在微波下席夫碱缩合合成了一种高度稳定的多孔有机聚合物POF-1辐照。由于多孔结构中富含电子的硫和氮原子与碘相互作用并通过静电相互作用形成聚碘离子，POF-1表现出对碘吸附的高亲和力。POF-1在气相中表现出4.25 g g ^{-1的显着碘吸收能力，可以有效地从碘-环己烷溶液中去除碘，吸附效率为141.0 mg/L。}碘吸附遵循Langmuir 等温模型，即单层吸附和伪二级动力学。POF-1 即使在五个循环后也表现出良好的可逆碘捕获可回收性。此外，POF-1的发光特性已被用于在一系列硝基芳香族化合物中以高灵敏度选择性检测苦味酸，检测限为8 μM。荧光猝灭机制主要归因于光致电子转移和内滤光效应。