Supramolecular Self-Assembly of Nanoconfined Ionic Liquids for Fast Anisotropic Ion Transport

Tomy Cherian; Danilo Rosa Nunes; Thomas G. Dane; Johan Jacquemin; Ulla Vainio; Teemu T. T. Myllymaki; Jaakko V. Timonen; Nikolay Houbenov; Manuel Marechal; Patrice Rannou; Olli Ikkala

doi:10.1002/adfm.201905054

Supramolecular Self-Assembly of Nanoconfined Ionic Liquids for Fast Anisotropic Ion Transport

Tomy Cherian, Danilo Rosa Nunes, Thomas G. Dane, Johan Jacquemin, Ulla Vainio, Teemu T. T. Myllymaki, Jaakko V. Timonen, Nikolay Houbenov, Manuel Marechal, Patrice Rannou, Olli Ikkala

Research output: Contribution to journal › Article › Scientific › peer-review

11 Citations (Scopus)

188 Downloads (Pure)

Abstract

Materials involving nanoconfinement of ionic liquids (ILs) have been pursued for functionalities and ionic devices. However, their complex synthesis, challenges to achieve long-range order, and laborious tunability limit their practical implementation. Herein, these challenges are addressed by complexing surfactants to ILs, yielding a facile, modular, and scalable approach. Based on structural screening, ionic complexation of di-n-nonylamine to the terminal sulfonic acid of 1-(4-sulfobutyl)-3-methylimidazolium hydrogen sulfate IL is selected as a proof of concept. Spontaneous homeotropic smectic order over micrometers is observed, with alternating ionic and alkyl layers. The 1 nm thick ionic layers involve 2D crystalline internal order up to 150 degrees C, strongly promoting anisotropic ion transport (sigma(||)/sigma(perpendicular to) > 6500), and curiously, still allowing fluidity. High ionic conductivity of 35 mS cm(-1) and mesoscopic diffusion coefficient of approximate to 10(-5) cm(2) s(-1) at 150 degrees C along the ionic layers are observed. Fast anisotropic ion transport by simply complexing two components open doors to functional materials and applications.

Original language	English
Article number	1905054
Number of pages	8
Journal	Advanced Functional Materials
Early online date	3 Oct 2019
DOIs	https://doi.org/10.1002/adfm.201905054
Publication status	Published - 2019
MoE publication type	A1 Journal article-refereed

Keywords

2D ionic transport
Ionic liquid
nanoconfinement
supramolecular ionic liquid crystal
surfactant-self-assembly
PHASE-TRANSITIONS
CRYSTALS
CONDUCTIVITY
SOLVENTS
RI-MP2

Access to Document

10.1002/adfm.201905054Licence: CC BY-NC

Cherian_et_al-2019-Advanced_Functional_MaterialsFinal published version, 3.24 MBLicence: CC BY-NC

DRIVEN: Field driven materials for functions, dissipation, and mimicking Pavlovian adaptation
Ikkala, O. (Principal investigator), Chandra, S. (Project Member), Cherian, T. (Project Member), Eklund, A. (Project Member), Hong, X. (Project Member), Fang, Y. (Project Member), Liang, C. (Project Member), Srbova, L. (Project Member), Wani, O. (Project Member), Zhang, H. (Project Member), Girmay, S. (Project Member), Hu, S. (Project Member), Gustavsson, L. (Project Member), Lin, Z. (Project Member), Peng, B. (Project Member), Som, A. (Project Member) & Ressouche, E. (Project Member)
01/10/2017 → 30/09/2022
Project: EU: ERC grants

OtaNano
Rissanen, A. (Manager)
Aalto University
Facility/equipment: Facility
OtaNano - Nanomicroscopy Center
Seitsonen, J. (Manager) & Rissanen, A. (Other)
OtaNano
Facility/equipment: Facility

Cite this

@article{1a669d0f0ea54c7db62006aac2fe843f,

title = "Supramolecular Self-Assembly of Nanoconfined Ionic Liquids for Fast Anisotropic Ion Transport",

abstract = "Materials involving nanoconfinement of ionic liquids (ILs) have been pursued for functionalities and ionic devices. However, their complex synthesis, challenges to achieve long-range order, and laborious tunability limit their practical implementation. Herein, these challenges are addressed by complexing surfactants to ILs, yielding a facile, modular, and scalable approach. Based on structural screening, ionic complexation of di-n-nonylamine to the terminal sulfonic acid of 1-(4-sulfobutyl)-3-methylimidazolium hydrogen sulfate IL is selected as a proof of concept. Spontaneous homeotropic smectic order over micrometers is observed, with alternating ionic and alkyl layers. The 1 nm thick ionic layers involve 2D crystalline internal order up to 150 degrees C, strongly promoting anisotropic ion transport (sigma(||)/sigma(perpendicular to) > 6500), and curiously, still allowing fluidity. High ionic conductivity of 35 mS cm(-1) and mesoscopic diffusion coefficient of approximate to 10(-5) cm(2) s(-1) at 150 degrees C along the ionic layers are observed. Fast anisotropic ion transport by simply complexing two components open doors to functional materials and applications.",

keywords = "2D ionic transport, Ionic liquid, nanoconfinement, supramolecular ionic liquid crystal, surfactant-self-assembly, PHASE-TRANSITIONS, CRYSTALS, CONDUCTIVITY, SOLVENTS, RI-MP2",

author = "Tomy Cherian and Nunes, {Danilo Rosa} and Dane, {Thomas G.} and Johan Jacquemin and Ulla Vainio and Myllymaki, {Teemu T. T.} and Timonen, {Jaakko V.} and Nikolay Houbenov and Manuel Marechal and Patrice Rannou and Olli Ikkala",

note = "| openaire: EC/H2020/742829/EU//DRIVEN",

year = "2019",

doi = "10.1002/adfm.201905054",

language = "English",

journal = "Advanced Functional Materials",

issn = "1616-301X",

publisher = "Wiley-VCH Verlag",

}

TY - JOUR

T1 - Supramolecular Self-Assembly of Nanoconfined Ionic Liquids for Fast Anisotropic Ion Transport

AU - Cherian, Tomy

AU - Nunes, Danilo Rosa

AU - Dane, Thomas G.

AU - Jacquemin, Johan

AU - Vainio, Ulla

AU - Myllymaki, Teemu T. T.

AU - Timonen, Jaakko V.

AU - Houbenov, Nikolay

AU - Marechal, Manuel

AU - Rannou, Patrice

AU - Ikkala, Olli

N1 - | openaire: EC/H2020/742829/EU//DRIVEN

PY - 2019

Y1 - 2019

N2 - Materials involving nanoconfinement of ionic liquids (ILs) have been pursued for functionalities and ionic devices. However, their complex synthesis, challenges to achieve long-range order, and laborious tunability limit their practical implementation. Herein, these challenges are addressed by complexing surfactants to ILs, yielding a facile, modular, and scalable approach. Based on structural screening, ionic complexation of di-n-nonylamine to the terminal sulfonic acid of 1-(4-sulfobutyl)-3-methylimidazolium hydrogen sulfate IL is selected as a proof of concept. Spontaneous homeotropic smectic order over micrometers is observed, with alternating ionic and alkyl layers. The 1 nm thick ionic layers involve 2D crystalline internal order up to 150 degrees C, strongly promoting anisotropic ion transport (sigma(||)/sigma(perpendicular to) > 6500), and curiously, still allowing fluidity. High ionic conductivity of 35 mS cm(-1) and mesoscopic diffusion coefficient of approximate to 10(-5) cm(2) s(-1) at 150 degrees C along the ionic layers are observed. Fast anisotropic ion transport by simply complexing two components open doors to functional materials and applications.

AB - Materials involving nanoconfinement of ionic liquids (ILs) have been pursued for functionalities and ionic devices. However, their complex synthesis, challenges to achieve long-range order, and laborious tunability limit their practical implementation. Herein, these challenges are addressed by complexing surfactants to ILs, yielding a facile, modular, and scalable approach. Based on structural screening, ionic complexation of di-n-nonylamine to the terminal sulfonic acid of 1-(4-sulfobutyl)-3-methylimidazolium hydrogen sulfate IL is selected as a proof of concept. Spontaneous homeotropic smectic order over micrometers is observed, with alternating ionic and alkyl layers. The 1 nm thick ionic layers involve 2D crystalline internal order up to 150 degrees C, strongly promoting anisotropic ion transport (sigma(||)/sigma(perpendicular to) > 6500), and curiously, still allowing fluidity. High ionic conductivity of 35 mS cm(-1) and mesoscopic diffusion coefficient of approximate to 10(-5) cm(2) s(-1) at 150 degrees C along the ionic layers are observed. Fast anisotropic ion transport by simply complexing two components open doors to functional materials and applications.

KW - 2D ionic transport

KW - Ionic liquid

KW - nanoconfinement

KW - supramolecular ionic liquid crystal

KW - surfactant-self-assembly

KW - PHASE-TRANSITIONS

KW - CRYSTALS

KW - CONDUCTIVITY

KW - SOLVENTS

KW - RI-MP2

U2 - 10.1002/adfm.201905054

DO - 10.1002/adfm.201905054

M3 - Article

SN - 1616-301X

JO - Advanced Functional Materials

JF - Advanced Functional Materials

M1 - 1905054

ER -

Supramolecular Self-Assembly of Nanoconfined Ionic Liquids for Fast Anisotropic Ion Transport

Abstract

Keywords

Access to Document

Fingerprint

Projects

DRIVEN: Field driven materials for functions, dissipation, and mimicking Pavlovian adaptation

Equipment

OtaNano

OtaNano - Nanomicroscopy Center

Cite this