Hydrogen-bonded organic framework for red light-mediated photocatalysis  

作　　者：Haofei Zhao Ziwen Zhou Xuenan Feng Chao Liu Hui Wu Wei Zhou Hailong Wang 

机构地区：[1]Beijing Advanced Innovation Center for Materials Genome Engineering,University of Science and Technology Beijing,Beijing 100083,China [2]Center for Neutron Research,National Institute of Standards and Technology,Gaithersburg,Maryland 20899-6102,USA [3]College of Chemistry and Materials Science,Hebei University,Baoding 071002,China

出　　处：《Nano Research》2023年第7期8809-8816,共8页纳米研究（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(Nos.22011540002 and 22131005);Xiaomi Young Scholar Program,the Fundamental Research Funds for the Central Universities,the Advanced Talents Incubation Program of Hebei University,and University of Science and Technology Beijing and Hebei University are gratefully acknowledged.

摘　　要：The development of heterogeneous molecule-based catalysts for red light-mediated photocatalysis is still challenging due to the improper light absorption for most materials and the photoactivity deactivation for solid assembly.Herein,red light photocatalysis with a hydrogen-bonded organic framework(HOF)is established.This HOF,named HOF-66,is formed from the self-assembly of guanine-decorated naphthalenediimide(NDI)molecule through hydrogen-bonded guanine-quadruplex nodes,showing square grid supramolecular layers confirmed by powder X-ray diffraction analysis.In contrast to unsubstituted NDI HOF,introduction of ethylamino groups to NDI core in HOF-66 tunes strong electronic maximum absorption peak to 619 nm,allowing red light photocatalysis of singlet oxygen evolution proved by 1,3-diphenylisobenzofuran degradation and electron spin resonance determination.Particularly,under the same conditions,the sulfide oxidation rate in the presence of HOF-66 was 28 times higher compared to its unsubstituted analogue.This work integrates the molecular design and aggregation effect towards the application of HOFs,opening a new gate for red light photocatalysts.

关 键 词：hydrogen-bonded organic framework red light PHOTOCATALYSIS reactive oxygen species degradation of thioethers 

分 类 号：O64[理学—物理化学]