基于二苯并噻吩 - S,S - 二氧化物的共轭聚合物：可见光下用于水制氢的高效光催化剂。
Dibenzothiophene-S,S-Dioxide-Based Conjugated Polymers: Highly Efficient Photocatalyts for Hydrogen Production from Water under Visible Light.
作者信息
Dai Chunhui, Xu Shidang, Liu Wei, Gong Xuezhong, Panahandeh-Fard Majid, Liu Zitong, Zhang Deqing, Xue Can, Loh Kian Ping, Liu Bin
机构信息
Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
Department of Chemistry and Centre for Advanced 2D Materials, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.
出版信息
Small. 2018 Aug;14(34):e1801839. doi: 10.1002/smll.201801839. Epub 2018 Jul 24.
Three dibenzothiophene-S,S-dioxide-based alternating copolymers were synthesized by facile Suzuki polymerization for visible light-responsive hydrogen production from water (> 420 nm). Without addition of any cocatalyst, FluPh2-SO showed a photocatalytic efficiency of 3.48 mmol h g- , while a larger hydrogen evolution rate (HER) of 4.74 mmol h g was achieved for Py-SO, which was ascribed to the improved coplanarity of the polymer that facilitated both intermolecular packing and charge transport. To minimize the possible steric hindrance of FluPh2-SO by replacing 9,9'-diphenylfluorene with fluorene, Flu-SO exhibited a more red-shifted absorption than FluPh2-SO and yielded the highest HER of 5.04 mmol h g . This work highlights the potential of dibenzothiophene-S,S-dioxide as a versatile building block and the rational design strategy for achieving high photocatalytic efficiency.
通过简便的铃木聚合反应合成了三种基于二苯并噻吩 - S,S - 二氧化物的交替共聚物，用于从水中进行可见光响应的产氢反应（波长大于420 nm）。在不添加任何助催化剂的情况下，FluPh2 - SO的光催化效率为3.48 mmol h g- ，而Py - SO实现了更高的析氢速率（HER），为4.74 mmol h g，这归因于聚合物共面性的改善，有利于分子间堆积和电荷传输。为了通过用芴取代9,9'-二苯基芴来最小化FluPh2 - SO可能的空间位阻，Flu - SO表现出比FluPh2 - SO更红移的吸收，并产生了最高的HER，为5.04 mmol h g 。这项工作突出了二苯并噻吩 - S,S - 二氧化物作为通用结构单元的潜力以及实现高光催化效率的合理设计策略。
Zotero 插件