The visible light-assisted photocatalysis approach allows more sustainable and atom-economical C–H bond arylation processes. The polymer-based photocatalysts are an attractive choice because of their variable design and development feasibility as well as effective catalytic applications. In the present work, by following the basic principles of green chemistry, we have chosen an environmentally friendly and biologically suitable chemical i.e. Erythrosine B as a unit molecule for the generation of photocatalyst EP (C₂₀H₈O₅S₄). The generation of EP has been performed via a one-pot solvothermal reaction of Erythrosine B with sulfur powder. The structural analysis of the EP evidence the generation of an interesting example 2D-polymeric assembly where disulfide (–S–S–) units are acting as linkers and show high thermal stability up to 800 °C (39.9% left as a residue). The low optical band gap of 2.08 eV and electrochemical band gap of 2.09 eV favors its catalytic applicability. The catalytic investigation reveals excellent applicability of EP in C–H arylation (yield 98.5% & selectivity 99%).

可见光辅助光催化方法可实现更可持续且更经济的C-H键芳基化过程。聚合物基光催化剂因其可变的设计和开发可行性以及有效的催化应用而成为有吸引力的选择。在本工作中，我们遵循绿色化学的基本原理，选择了一种环境友好且生物相容的化学物质赤藓红B作为单位分子来生成光催化剂EP（C ₂₀ H ₈ O ₅ S ₄）。EP的生成是通过赤藓红 B 与硫粉的一锅溶剂热反应进行的。EP的结构分析证明了一个有趣的 2D 聚合物组装示例的生成，其中二硫键 (-S-S-) 单元充当连接子，并在高达 800 °C 的温度下表现出高热稳定性（39.9% 残留为残基）。2.08 eV的低光学带隙和2.09 eV的电化学带隙有利于其催化应用。催化研究表明EP在 C-H 芳基化中具有出色的适用性（产率 98.5%，选择性 99%）。