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240216s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c03461
|2 doi
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|a pubmed24n1309.xml
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|a eng
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| 100 |
1 |
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|a Liang, Hongyu
|e verfasserin
|4 aut
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| 245 |
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|a Competition-Induced Macroscopic Superlubricity of Ionic Liquid Analogues by Hydroxyl Ligands Revealed by in Situ Raman
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 27.02.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a High load-bearing capacity is one of the crucial indicators for liquid superlubricants to move toward practicality. However, some of the current emerging systems not only have low contact pressures but also are highly susceptible to further degradation due to water adsorption and even superlubricity failure. Herein, a novel choline chloride-based ionic liquid analogues (ILAs) of a superlubricant with triethanolamine (TEOA) as the H-bond donor is reported for the first time; it obtains an ultralow coefficient of friction (0.005) and high load-bearing capacity (360 MPa, more than 2 times that of similar systems) due to adsorption of a small amount of water (<5 wt %) from the air. In situ Raman combined with 1H NMR and FTIR techniques reveals that adsorbed water competes with the hydroxyl group of TEOA for coordination with Cl-, leading to the conversion of some strong H-bonds to weak H-bonds in ILAs; the localized strong H-bonds and weak H-bonds endow the ILAs with high load-bearing capacity and the formation of ultralow shear-resistance sliding interfaces, respectively, under the shear motion. This study proposes a strategy to modulate the interactions between liquid species using adsorbed water from air as a competing ligand, which provides new insights into the design of ILA-based macroscopic liquid superlubricants with a high load-bearing capacity
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|a Journal Article
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| 700 |
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|a Xia, Xiaojie
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Manqiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zou, Shijing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yin, Tianqiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Hongfei
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Yanhu
|e verfasserin
|4 aut
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|a Min, Chunying
|e verfasserin
|4 aut
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| 700 |
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|a Bu, Yongfeng
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 40(2024), 8 vom: 27. Feb., Seite 4277-4284
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:40
|g year:2024
|g number:8
|g day:27
|g month:02
|g pages:4277-4284
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|u http://dx.doi.org/10.1021/acs.langmuir.3c03461
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