Leem Gyu, Sherman Benjamin D, Schanze Kirk S
Department of Chemistry, University of Texas at San Antonio, San Antonio, TX 78249 USA.
Department of Chemistry & Biochemistry, Texas Christian University, Fort Worth, TX 76129 USA.
Nano Converg. 2017;4(1):37. doi: 10.1186/s40580-017-0132-z. Epub 2017 Dec 22.
The synthesis of polymer-based assemblies for light harvesting has been motivated by the multi-chromophore antennas that play a role in natural photosynthesis for the potential use in solar conversion technologies. This review describes a general strategy for using polymer-based chromophore-catalyst assemblies for solar-driven water oxidation at a photoanode in a dye-sensitized photoelectrochemical cell (DSPEC). This report begins with a summary of the synthetic methods and fundamental photophysical studies of light harvesting polychormophores in solution which show these materials can transport excited state energy to an acceptor where charge-separation can occur. In addition, studies describing light harvesting polychromophores containing an anchoring moiety (ionic carboxylate) for covalent bounding to wide band gap mesoporous semiconductor surfaces are summarized to understand the photophysical mechanisms of directional energy flow at the interface. Finally, the performance of polychromophore/catalyst assembly-based photoanodes capable of light-driven water splitting to oxygen and hydrogen in a DSPEC are summarized.
用于光捕获的聚合物基组件的合成受到多发色团天线的推动，这些天线在自然光合作用中发挥作用，有望用于太阳能转换技术。本综述描述了一种使用聚合物基发色团 - 催化剂组件在染料敏化光电化学电池（DSPEC）的光阳极上进行太阳能驱动水氧化的通用策略。本报告首先总结了溶液中光捕获多发色团的合成方法和基础光物理研究，这些研究表明这些材料可以将激发态能量转移到能够发生电荷分离的受体上。此外，还总结了描述含有用于与宽带隙介孔半导体表面共价结合的锚定部分（离子羧酸盐）的光捕获多发色团的研究，以了解界面处定向能量流动的光物理机制。最后，总结了能够在DSPEC中光驱动水分解为氧气和氢气的基于多发色团/催化剂组件的光阳极的性能。
