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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.8b02905
|2 doi
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|a pubmed24n0971.xml
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|a (DE-627)NLM29147585X
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|a (NLM)30517017
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Duss, Michael
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Lipidic Mesophase-Embedded Palladium Nanoparticles
|b Synthesis and Tunable Catalysts in Suzuki-Miyaura Cross-Coupling Reactions
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|c 2019
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 20.11.2019
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Lipidic cubic phases (LCPs) can reduce Pd2+ salts to palladium nanoparticles (PdNPs) of ∼5 nm size in their confined water channels under mild conditions. The resulting PdNP-containing LCPs were used as nanoreactor scaffolds to catalyze Suzuki-Miyaura cross-coupling reactions in the aqueous channels of the mesophase. To turn on catalysis, PdNP-containing LCPs were activated by swelling the aqueous channels of the lipidic framework, thereby enabling diffusion of the water-soluble substrates to the catalysts. The mesophases play a threefold role: they act as reducing agents for Pd2+, as limiting templates for their growth, and as support. The system was characterized and investigated by small-angle X-ray scattering (SAXS), cryo-transmission electron microscopy, dynamic light scattering, and nuclear magnetic resonance. Bulk LCPs and three dispersed palladium/lipid hybrid nanoparticle types were applied in the catalysis. The latter-liposomes, hexosomes, and cubosomes-can be obtained by design through combination of lipids and additives. The Suzuki-Miyaura cross-coupling of 5-iodo-2'-deoxyuridine and phenylboronic acid was used as a model reaction to study these systems. Bulk Pd-LCPs deliver the Suzuki-Miyaura product in 24 h in conversions up to 98% at room temperature, whereas with palladium/lipid dispersions at 40 °C, 68% of the starting material was transformed to the product after 72 h
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Vallooran, Jijo J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Salvati Manni, Livia
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kieliger, Nicole
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Handschin, Stephan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mezzenga, Raffaele
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jessen, Henning J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Landau, Ehud M
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 35(2019), 1 vom: 08. Jan., Seite 120-127
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:35
|g year:2019
|g number:1
|g day:08
|g month:01
|g pages:120-127
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|u http://dx.doi.org/10.1021/acs.langmuir.8b02905
|3 Volltext
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|h 120-127
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