The development of highly efficient organic photocatalysts for water splitting into hydrogen is one of the key challenges in materials chemistry. Herein, we have designed and synthesized a series of conjugated polymers with either a one- or three-dimensional framework consisting of pyrene and benzothiadiazole with different numbers of fluorine substitutions (0 or 2). The effect of molecular structure and fluorine substitution on their catalytic activity was investigated. It was found that the linear non-fluorinated polymer L-PyBT exhibited the highest hydrogen evolution rate up to 83.7 μmol h⁻¹ under visible light irradiation among the prepared polymers because of its broad light absorption, suitable energy bandgap, and enhanced charge generation and separation process.

中文翻译：

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分子结构和氟化对of-苯并噻二唑基共轭聚合物在可见光驱动下析氢性能的影响†

用于将水分解为氢的高效有机光催化剂的开发是材料化学中的关键挑战之一。本文中，我们设计并合成了一系列具有一维或三维骨架的共轭聚合物，该骨架由pyr和具有不同氟取代数（0或2）的苯并噻二唑组成。研究了分子结构和氟取代对其催化活性的影响。发现在制备的聚合物中，线性非氟化聚合物L-PyBT在可见光照射下表现出最高的氢释放速率，高达83.7μmolh ^-1，这是因为其具有宽的光吸收，合适的能带隙以及增强的电荷产生和吸收。分离过程。