Herce Janira, Martínez-Aguirre Mónica, Gómez-Benito Javier, Rodríguez Miguel A, Berenguer Jesús R
Organometallic Molecular Materials (MATMO), Departamento de Química-Instituto de Investigación en Química (IQUR), Universidad de La Rioja, Madre de Dios, 53, E-26006 Logroño, La Rioja, Spain.
Molecules. 2025 Apr 9;30(8):1680. doi: 10.3390/molecules30081680.
Photocatalysis is a key strategy for the development of sustainable solar-driven chemical processes. In this work, we report the synthesis and characterization of a novel organometallo-ionosilica material derived from the self-condensation of an alcoxysilane functionalized Ir(III) complex. In acetonitrile suspension, the material retains the photophysical properties of its precursor in solution in the same solvent, together with a significant absorption in the visible between 400 and 500 nm. As a heterogeneous photocatalyst, the material showed high efficiency in the reductive dehalogenation of 2-bromoacetophenone under blue light irradiation, achieving high yields of conversion of about 90%, and excellent recyclability in seven catalytic cycles, retaining more than 70% of the catalytic efficiency. All these properties of the self-condensed material highlight its potential as an efficient and sustainable heterogeneous photocatalyst for applications in organic synthesis and solar-driven redox processes.
光催化是开发可持续太阳能驱动化学过程的关键策略。在这项工作中，我们报告了一种新型有机金属-离子二氧化硅材料的合成与表征，该材料由烷氧基硅烷官能化的Ir(III)配合物自缩合而成。在乙腈悬浮液中，该材料保留了其前体在相同溶剂溶液中的光物理性质，同时在400至500 nm的可见光范围内有显著吸收。作为一种多相光催化剂，该材料在蓝光照射下对2-溴苯乙酮的还原脱卤反应中表现出高效率，实现了约90%的高转化率，并且在七个催化循环中具有出色的可回收性，保留了超过70%的催化效率。这种自缩合材料的所有这些性质突出了其作为一种高效且可持续的多相光催化剂在有机合成和太阳能驱动氧化还原过程中的应用潜力。
