The new cobalt tetrapyridyl complex 1(BF₄)₂ was characterized and assessed for hydrogen production in fully aqueous solution. Mechanistic information was gained thanks to a fast screening method, using chemical reductants and a Clark microelectrode. Optimal hydrogen production (443 TONs – 3 mL of H₂) was achieved under visible light-driven conditions, in the presence of a noble metal-free photosensitizer, the water soluble porphyrin 2Cl₄, and the ascorbate/tris-(2-carboxyethyl)phosphine (TCEP) sacrificial electron donor system.

中文翻译：

---

基于新型钴四吡啶基催化剂的无贵金属光催化体系，可在完全水性介质中制氢†

对新的钴四吡啶基配合物1（BF ₄）₂进行了表征，并评估了其在完全水溶液中的产氢量。通过使用化学还原剂和Clark微电极的快速筛选方法获得了机械信息。在无贵金属的光敏剂，水溶性卟啉2Cl ₄和抗坏血酸/三（2-羧乙基）存在下，在可见光驱动条件下达到最佳的氢气产生（443 TONs – 3 mL H ₂））膦（TCEP）牺牲电子供体系统。