Hu Wenhui, Yang Fan, Pietraszak Nick, Gu Jing, Huang Jier
Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201, USA.
Phys Chem Chem Phys. 2020 Nov 18;22(44):25445-25449. doi: 10.1039/d0cp03995k.
Zeolitic Imidazolate frameworks (ZIFs) have been demonstrated as promising light harvesting and photocatalytic materials for solar energy conversion. To facilitate their application in photocatalysis, it is essential to develop a fundamental understanding of their light absorption properties and energy transfer dynamics. In this work, we report distance-dependent energy transfer dynamics from a molecular photosensitizer (RuN3) to ZIF-67, where the distance between RuN3 and ZIF-67 is finely tuned by depositing an ultrathin Al2O3 layer on the ZIF-67 surface using an atomic layer deposition (ALD) method. We show that energy transfer time decreases with increasing distance between RuN3 and ZIF-67 and the Förster radius is estimated to be 14.4 nm.
沸石咪唑酯骨架材料（ZIFs）已被证明是用于太阳能转换的有前途的光捕获和光催化材料。为了促进它们在光催化中的应用，深入了解其光吸收特性和能量转移动力学至关重要。在这项工作中，我们报告了从分子光敏剂（RuN3）到ZIF-67的距离依赖性能量转移动力学，其中通过使用原子层沉积（ALD）方法在ZIF-67表面沉积超薄Al2O3层来精细调节RuN3与ZIF-67之间的距离。我们表明，能量转移时间随着RuN3与ZIF-67之间距离的增加而减少，并且福斯特半径估计为14.4 nm。
