The optoelectronic features of 3-hydroxyflavone (3HF) self-assembled on the surface of an n-type semiconducting metal oxide (TiO₂) and an insulator (Al₂O₃) are herein investigated. 3HF molecules use the coordinatively unsaturated metal ions present on the oxide surface to form metal complexes, which exhibit different behaviors upon light irradiation, depending on the nature of the metal ion. Specifically, we show that the photoluminescence of the surface species can be modulated according to the chemical properties of the complex (i.e. the binding metal ion), resulting in solid-state emitters in a high quantum yield (about 15%). Furthermore, photoinduced charge injection can be promoted or inhibited, providing a multifunctional hybrid system.

中文翻译：

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通过配位化学实现可调谐物理：在 Ti 和 Al 的氧化物表面形成具有电子注入和发光能力的 3-羟基黄酮螯合物

本文研究了在 n 型半导体金属氧化物 (TiO ₂ ) 和绝缘体 (Al ₂ O ₃ ) 表面自组装的 3-羟基黄酮 (3HF) 的光电特性。3HF分子利用氧化物表面存在的配位不饱和金属离子形成金属络合物，根据金属离子的性质，金属络合物在光照射下表现出不同的行为。具体来说，我们表明表面物质的光致发光可以根据复合物的化学性质（即结合金属离子），导致固态发射器具有高量子产率（约 15%）。此外，可以促进或抑制光致电荷注入，从而提供多功能混合系统。