气候变化领域集成服务门户(CCPortal): Side-chain tuning in conjugated polymer photocatalysts for improved hydrogen production from water

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DOI	10.1039/d0ee01213k
	Side-chain tuning in conjugated polymer photocatalysts for improved hydrogen production from water
	Woods D.J.; Hillman S.A.J.; Pearce D.; Wilbraham L.; Flagg L.Q.; Duffy W.; McCulloch I.; Durrant J.R.; Guilbert A.A.Y.; Zwijnenburg M.A.; Sprick R.S.; Nelson J.; Cooper A.I.
发表日期	2020
ISSN	1754-5692
起始页码	1843
结束页码	1855
卷号	13 期号:6
英文摘要	Structure-property-activity relationships in solution processable polymer photocatalysts for hydrogen production from water were probed by varying the chemical structure of both the polymer side-chains and the polymer backbone. In both cases, the photocatalytic performance depends strongly on the inclusion of more polar groups, such as dibenzo[b,d]thiophene sulfone backbone units or oligo(ethylene glycol) side-chains. We used optical, spectroscopic, and structural characterisation techniques to understand the different catalytic activities of these systems. We find that although polar groups improve the wettability of the material with water in all cases, backbone and side-chain modifications affect photocatalytic performance in different ways: the inclusion of dibenzo[b,d]thiophene sulfone backbone units improves the thermodynamic driving force for hole transfer to the sacrificial donor, while the inclusion of oligo ethylene glycol side-chains aids the degree of polymer swelling and also extends the electron polaron lifetime. The best performing material, FS-TEG, exhibits a HER of 72.5 μmol h-1 for 25 mg photocatalyst (2.9 mmol g-1 h-1) when dispersed in the presence of a sacrificial donor and illuminated with λ > 420 nm light, corresponding to a hydrogen evolution EQE of 10% at 420 nm. When cast as a thin film, this HER was further boosted to 13.9 mmol g-1 h-1 (3.0 mmol m-2 h-1), which is among the highest rates in this field. © The Royal Society of Chemistry.
语种	英语
scopus关键词	Aliphatic compounds; Catalyst activity; Conjugated polymers; Ethylene; Ethylene glycol; Polyols; Thiophene; Hydrogen evolution; Oligo(ethylene glycol); Photocatalytic performance; Polymer side-chains; Side chain modifications; Solution processable; Structure property; Thermodynamic driving forces; Hydrogen production
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162845
作者单位	Department of Chemistry and Material Innovation Factory, University of Liverpool, Crown Street, Liverpool, L69 7ZD, United Kingdom; Department of Physics and Centre for Plastic Electronics, Imperial College London, Prince Consort Road, London, SW7 2AZ, United Kingdom; Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, United Kingdom; Department of Chemistry, University of Washington, Seattle, WA 98195-1700, United States; King Abdullah University of Science and Technology, KAUST Solar Center, Thuwal, 23955, Saudi Arabia; Department of Chemistry, Centre for Plastic Electronics, Imperial College London Exhibition Road, London, SW7 2AZ, United Kingdom
推荐引用方式 GB/T 7714	Woods D.J.,Hillman S.A.J.,Pearce D.,et al. Side-chain tuning in conjugated polymer photocatalysts for improved hydrogen production from water[J],2020,13(6).
APA	Woods D.J..,Hillman S.A.J..,Pearce D..,Wilbraham L..,Flagg L.Q..,...&Cooper A.I..(2020).Side-chain tuning in conjugated polymer photocatalysts for improved hydrogen production from water.Energy and Environmental Science,13(6).
MLA	Woods D.J.,et al."Side-chain tuning in conjugated polymer photocatalysts for improved hydrogen production from water".Energy and Environmental Science 13.6(2020).