兰州大学机构库 >化学化工学院
Nanostructured Lateral Boryl Substitution Conjugated Donor–Acceptor Oligomers for Visible-Light-Driven Hydrogen Production
Wei, Qiuyu1; Yao, Xiaoqiang2; Zhang, Qianqian1,2; Yan, Pengji3; Ru, Chenglong4; Li, Chunfeng1; Tao, Chunlan1; Wang, Wei1; Han, Dongfang1; Han, Dongxue1; Niu, Li1; Qin, Dongdong1; Pan, XB(潘效波)4
2021-06-10
Source PublicationSmall
ISSN16136810
Volume17Issue:23
AbstractPoor charge separation is the main factor that limits the photocatalytic hydrogen generation efficiency of organic conjugated polymers. In this work, a series of linear donor–acceptor (D–A) type oligomers are synthesized by a palladium-catalyzed Sonogashira–Hagihara coupling of electron-deficient diborane unit and different dihalide substitution sulfur functionalized monomers. Such diborane-based A unit exerts great impact on the resulting oligomers, including distinct semiconductor characters with isolated lowest unoccupied molecular orbital (LUMO) orbits locating in diborane-containing fragment, and elevated LUMO level higher than water reduction potential. Relative to A-A type counterpart, the enhanced dipole polarization effect in D–A oligomers facilitates separation of photogenerated charge carriers, as evidenced by notably prolonged electron lifetime. Owing to π–π stacking of rigid backbone, the oligomers can aggregate into an interesting 2D semicrystalline nanosheet (≈2.74 nm), which is rarely reported in linear polymeric photocatalysts prepared by similar carbon–carbon coupling reaction. Despite low surface area (30.3 m2 g−1), such ultrathin nanosheet D–A oligomer offers outstanding visible light (λ > 420 nm) hydrogen evolution rate of 833 µmol g−1 h−1, 14 times greater than its A-A analogue (61 µmol g−1 h−1). The study highlights the great potential of using boron element to construct D–A type oligomers for efficient photocatalytic hydrogen generation. © 2021 Wiley-VCH GmbH
KeywordFunctionalized monomers Hydrogen evolution rate Lowest unoccupied molecular orbital Photocatalytic hydrogen Photogenerated charge carriers Semiconductor characters Ultrathin nanosheets Visible-light-driven Functionalized monomers Hydrogen evolution rate Lowest unoccupied molecular orbital Photocatalytic hydrogen Photogenerated charge carriers Semiconductor characters Ultrathin nanosheets Visible-light-driven
PublisherJohn Wiley and Sons Inc
DOI10.1002/smll.202100132
Indexed ByEI
Language英语
EI Accession Number20211710263381
EI KeywordsHydrogen production
EI Classification Number522 Gas Fuels ; 712.1 Semiconducting Materials ; 741.1 Light/Optics ; 761 Nanotechnology ; 801.4 Physical Chemistry ; 802.2 Chemical Reactions ; 804 Chemical Products Generally ; 815.1.1 Organic Polymers ; 933 Solid State Physics
Original Document TypeJournal article (JA)
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lzu.edu.cn/handle/262010/451299
Collection化学化工学院
Affiliation1.Center for Advanced Analytical Science, College of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou; 510006, China;
2.College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou; 730070, China;
3.College of Chemistry and Chemical Engineering, Key Laboratory of Hexi Corridor Resources Utilization of Gansu Universities, Hexi University, Zhangye; 734000, China;
4.State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou; 730000, China
First Author AffilicationCollege of Chemistry and Chemical Engineering
Recommended Citation
GB/T 7714
Wei, Qiuyu,Yao, Xiaoqiang,Zhang, Qianqian,et al. Nanostructured Lateral Boryl Substitution Conjugated Donor–Acceptor Oligomers for Visible-Light-Driven Hydrogen Production[J]. Small,2021,17(23).
APA Wei, Qiuyu.,Yao, Xiaoqiang.,Zhang, Qianqian.,Yan, Pengji.,Ru, Chenglong.,...&Pan, Xiaobo.(2021).Nanostructured Lateral Boryl Substitution Conjugated Donor–Acceptor Oligomers for Visible-Light-Driven Hydrogen Production.Small,17(23).
MLA Wei, Qiuyu,et al."Nanostructured Lateral Boryl Substitution Conjugated Donor–Acceptor Oligomers for Visible-Light-Driven Hydrogen Production".Small 17.23(2021).
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