具有扩展激子扩散的有机光伏催化剂用于高效太阳能制氢
Organic Photovoltaic Catalyst with Extended Exciton Diffusion for High-Performance Solar Hydrogen Evolution.
作者信息
Zhu Yufan, Zhang Zhenzhen, Si Wenqin, Sun Qianlu, Cai Guilong, Li Yawen, Jia Yixiao, Lu Xinhui, Xu Weigao, Zhang Shiming, Lin Yuze
机构信息
Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation, Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 211816, Jiangsu, China.
出版信息
J Am Chem Soc. 2022 Jul 20;144(28):12747-12755. doi: 10.1021/jacs.2c03161. Epub 2022 Jul 11.
The short exciton diffusion length () associated with most classical organic photocatalysts (5-10 nm) imposes severe limits on photocatalytic hydrogen evolution efficiency. Here, a photovoltaic molecule (F1) without electron-deficient units at the central building block was designed and synthesized to improve the photoluminescence quantum yield (PLQY). With the enhanced PLQY of 9.3% and a large integral spectral overlap of 3.32 × 10 nm M cm, the average of F1 film increases to 20 nm, nearly twice the length of the control photovoltaic molecule (Y6). Then, the single-component organic nanoparticles (SC-NPs) based on F1 show an optimized average hydrogen evolution rate (HER) of 152.60 mmol h g under AM 1.5G sunlight (100 mW cm) illumination for 10 h, which is among the best results for photocatalytic hydrogen evolution.
大多数传统有机光催化剂的激子扩散长度较短（5-10纳米），这对光催化析氢效率造成了严重限制。在此，设计并合成了一种在中心结构单元中没有缺电子单元的光伏分子（F1），以提高光致发光量子产率（PLQY）。随着PLQY提高9.3%以及积分光谱重叠度达到3.32×10纳米·厘米，F1薄膜的平均激子扩散长度增加到20纳米，几乎是对照光伏分子（Y6）长度的两倍。然后，基于F1的单组分有机纳米颗粒（SC-NPs）在AM 1.5G太阳光（100毫瓦/平方厘米）照射10小时的条件下，显示出优化后的平均析氢速率（HER）为152.60毫摩尔·小时·克，这是光催化析氢的最佳结果之一。
Zotero 插件