New Protic Ionic Liquids as Potential Additives to Lubricate Si-Based MEMS/NEMS

Mariana T. Donato; Jonas Deuermeier; Rogério Colaço; Luís C. Branco; Benilde Saramago

doi:10.3390/molecules28062678

New Protic Ionic Liquids as Potential Additives to Lubricate Si-Based MEMS/NEMS

Mariana T. Donato, Jonas Deuermeier, Rogério Colaço, Luís C. Branco, Benilde Saramago

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Abstract

The motivation for this work was to develop new protic ionic liquids (PILs) as additives for the lubrication of micro and nanoelectromechanical systems (MEMS and NEMS). Ten PILs based on the combination of methylimidazolium ([MIMH]), 4-picolinium ([4-picH]), pyridinium ([PyrH]), 1,8-diazabicyclo[5.4.0]-undec-7-ene-8-ium ([DBUH]) and tetramethylguanidinium ([TMGH]) cations with hydrogen sulfate([HSO₄]) and mesylate ([MeSO₃]) anions were tested as additives in polyethylene glycol (PEG200) to lubricate steel/silicon and silicon/silicon contacts. The best additive was [4-picH][HSO₄], which adsorbed strongly on the Si surface, leading to a protective film that reduced wear by up to 15 times compared to PEG200.

Original language	English
Article number	2678
Number of pages	16
Journal	Molecules
Volume	28
Issue number	6
DOIs	https://doi.org/10.3390/molecules28062678
Publication status	Published - 16 Mar 2023

Keywords

friction
lubricant additives
MEMS/NEMS
protic ionic liquids
silicon
wear

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10.3390/molecules28062678Licence: CC BY

New Protic IonicFinal published version, 3.25 MBLicence: CC BY

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title = "New Protic Ionic Liquids as Potential Additives to Lubricate Si-Based MEMS/NEMS",

abstract = "The motivation for this work was to develop new protic ionic liquids (PILs) as additives for the lubrication of micro and nanoelectromechanical systems (MEMS and NEMS). Ten PILs based on the combination of methylimidazolium ([MIMH]), 4-picolinium ([4-picH]), pyridinium ([PyrH]), 1,8-diazabicyclo[5.4.0]-undec-7-ene-8-ium ([DBUH]) and tetramethylguanidinium ([TMGH]) cations with hydrogen sulfate([HSO4]) and mesylate ([MeSO3]) anions were tested as additives in polyethylene glycol (PEG200) to lubricate steel/silicon and silicon/silicon contacts. The best additive was [4-picH][HSO4], which adsorbed strongly on the Si surface, leading to a protective film that reduced wear by up to 15 times compared to PEG200.",

keywords = "friction, lubricant additives, MEMS/NEMS, protic ionic liquids, silicon, wear",

author = "Donato, {Mariana T.} and Jonas Deuermeier and Rog{\'e}rio Cola{\c c}o and Branco, {Lu{\'i}s C.} and Benilde Saramago",

note = "Funding Information: The work was financed by the Portuguese Foundation for Science and Technology (FCT) through the projects UIDB/00100/2020, UIDP/00100/2020 and IMS-LA/P/0056/2020 and through the PhD grant SFRH/BD/140079/2018 from Mariana Donato. Additionally, this work was financed by national funds from FCT in the scope of the projects UIDB/50022/2020 (IDMEC/LAETA) and LA/P/0037/2020, UIDP/50025/2020 and UIDB/50025/2020 of the Associate Laboratory Institute of Nanostructures, Nanomodelling and Nanofabrication—i3N. Publisher Copyright: {\textcopyright} 2023 by the authors.",

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doi = "10.3390/molecules28062678",

language = "English",

volume = "28",

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T1 - New Protic Ionic Liquids as Potential Additives to Lubricate Si-Based MEMS/NEMS

AU - Donato, Mariana T.

AU - Deuermeier, Jonas

AU - Colaço, Rogério

AU - Branco, Luís C.

AU - Saramago, Benilde

N1 - Funding Information: The work was financed by the Portuguese Foundation for Science and Technology (FCT) through the projects UIDB/00100/2020, UIDP/00100/2020 and IMS-LA/P/0056/2020 and through the PhD grant SFRH/BD/140079/2018 from Mariana Donato. Additionally, this work was financed by national funds from FCT in the scope of the projects UIDB/50022/2020 (IDMEC/LAETA) and LA/P/0037/2020, UIDP/50025/2020 and UIDB/50025/2020 of the Associate Laboratory Institute of Nanostructures, Nanomodelling and Nanofabrication—i3N. Publisher Copyright: © 2023 by the authors.

PY - 2023/3/16

Y1 - 2023/3/16

N2 - The motivation for this work was to develop new protic ionic liquids (PILs) as additives for the lubrication of micro and nanoelectromechanical systems (MEMS and NEMS). Ten PILs based on the combination of methylimidazolium ([MIMH]), 4-picolinium ([4-picH]), pyridinium ([PyrH]), 1,8-diazabicyclo[5.4.0]-undec-7-ene-8-ium ([DBUH]) and tetramethylguanidinium ([TMGH]) cations with hydrogen sulfate([HSO4]) and mesylate ([MeSO3]) anions were tested as additives in polyethylene glycol (PEG200) to lubricate steel/silicon and silicon/silicon contacts. The best additive was [4-picH][HSO4], which adsorbed strongly on the Si surface, leading to a protective film that reduced wear by up to 15 times compared to PEG200.

AB - The motivation for this work was to develop new protic ionic liquids (PILs) as additives for the lubrication of micro and nanoelectromechanical systems (MEMS and NEMS). Ten PILs based on the combination of methylimidazolium ([MIMH]), 4-picolinium ([4-picH]), pyridinium ([PyrH]), 1,8-diazabicyclo[5.4.0]-undec-7-ene-8-ium ([DBUH]) and tetramethylguanidinium ([TMGH]) cations with hydrogen sulfate([HSO4]) and mesylate ([MeSO3]) anions were tested as additives in polyethylene glycol (PEG200) to lubricate steel/silicon and silicon/silicon contacts. The best additive was [4-picH][HSO4], which adsorbed strongly on the Si surface, leading to a protective film that reduced wear by up to 15 times compared to PEG200.

KW - friction

KW - lubricant additives

KW - MEMS/NEMS

KW - protic ionic liquids

KW - silicon

KW - wear

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JO - Molecules

JF - Molecules

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M1 - 2678

ER -

New Protic Ionic Liquids as Potential Additives to Lubricate Si-Based MEMS/NEMS

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