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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202105007
|2 doi
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|a pubmed24n1108.xml
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|a (DE-627)NLM332528650
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|a (NLM)34714562
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Kosco, Jan
|e verfasserin
|4 aut
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| 245 |
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|a Oligoethylene Glycol Side Chains Increase Charge Generation in Organic Semiconductor Nanoparticles for Enhanced Photocatalytic Hydrogen Evolution
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 02.06.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 Wiley-VCH GmbH.
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|a Organic semiconductor nanoparticles (NPs) composed of an electron donor/acceptor (D/A) semiconductor blend have recently emerged as an efficient class of hydrogen-evolution photocatalysts. It is demonstrated that using conjugated polymers functionalized with (oligo)ethylene glycol side chains in NP photocatalysts can greatly enhance their H2 -evolution efficiency compared to their nonglycolated analogues. The strategy is broadly applicable to a range of structurally diverse conjugated polymers. Transient spectroscopic studies show that glycolation facilitates charge generation even in the absence of a D/A heterojunction, and further suppresses both geminate and nongeminate charge recombination in D/A NPs. This results in a high yield of photogenerated charges with lifetimes long enough to efficiently drive ascorbic acid oxidation, which is correlated with greatly enhanced H2 -evolution rates in the glycolated NPs. Glycolation increases the relative permittivity of the semiconductors and facilitates water uptake. Together, these effects may increase the high-frequency relative permittivity inside the NPs sufficiently, to cause the observed suppression of exciton and charge recombination responsible for the high photocatalytic activities of the glycolated NPs
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|a Journal Article
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|a hydrogen
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|a nanoparticles
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|a organic semiconductors
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|a photocatalysts
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|a solar fuels
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|a Gonzalez-Carrero, Soranyel
|e verfasserin
|4 aut
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|a Howells, Calvyn T
|e verfasserin
|4 aut
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|a Zhang, Weimin
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|4 aut
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|a Moser, Maximilian
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|a Sheelamanthula, Rajendar
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|4 aut
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|a Zhao, Lingyun
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|4 aut
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|a Willner, Benjamin
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|4 aut
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|a Hidalgo, Tania C
|e verfasserin
|4 aut
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|a Faber, Hendrik
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|a Purushothaman, Balaji
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|4 aut
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|a Sachs, Michael
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|a Cha, Hyojung
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|a Sougrat, Rachid
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|4 aut
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|a Anthopoulos, Thomas D
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|a Inal, Sahika
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|a Durrant, James R
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|a McCulloch, Iain
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 34(2022), 22 vom: 29. Juni, Seite e2105007
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:34
|g year:2022
|g number:22
|g day:29
|g month:06
|g pages:e2105007
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|u http://dx.doi.org/10.1002/adma.202105007
|3 Volltext
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