Decoupled ion mobility in nano-confined ionic plastic crystal

Haijin Zhu; Aleksandra Grzelak; Ruhamah Yunis; Jaime Martín; Maria Forsyth

doi:10.1039/d0ma00778a

Decoupled ion mobility in nano-confined ionic plastic crystal

Haijin Zhu^*, Aleksandra Grzelak, Ruhamah Yunis, Jaime Martín, Maria Forsyth

^*Corresponding author for this work

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

4 Scopus citations

Abstract

Nanoconfined ions have dramatically different local environments compared to the bulk, which profoundly affects the ion solvation and transport properties taking place in the confined space. Herein, we investigate the rotational and translation mobility of both cation and anions of an OIPC (diethyl)(methyl)(isobutyl)phosphonium hexafluorophosphate) confined in 40 and 180 nm straight-through Al2O3 pores. The results revealed that the nanoconfined OIPC exhibit 44 times higher ionic conductivity than the bulk material at 30 °C. This enhancement is attributed to both the reduced tortuosity and the increased population of mobile species. More interestingly, the Al2O3 nanochannels were found to selectively enhance the rotation and translational motion of [P122i4] cation at elevated temperatures, whilst leaving that of the [PF6] anion less affected.

Original language	English
Pages (from-to)	3398-3405
Number of pages	8
Journal	Materials Advances
Volume	1
Issue number	9
DOIs	https://doi.org/10.1039/d0ma00778a
State	Published - 2020
Externally published	Yes

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title = "Decoupled ion mobility in nano-confined ionic plastic crystal",

abstract = "Nanoconfined ions have dramatically different local environments compared to the bulk, which profoundly affects the ion solvation and transport properties taking place in the confined space. Herein, we investigate the rotational and translation mobility of both cation and anions of an OIPC (diethyl)(methyl)(isobutyl)phosphonium hexafluorophosphate) confined in 40 and 180 nm straight-through Al2O3 pores. The results revealed that the nanoconfined OIPC exhibit 44 times higher ionic conductivity than the bulk material at 30 °C. This enhancement is attributed to both the reduced tortuosity and the increased population of mobile species. More interestingly, the Al2O3 nanochannels were found to selectively enhance the rotation and translational motion of [P122i4] cation at elevated temperatures, whilst leaving that of the [PF6] anion less affected.",

author = "Haijin Zhu and Aleksandra Grzelak and Ruhamah Yunis and Jaime Mart{\'i}n and Maria Forsyth",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2020",

doi = "10.1039/d0ma00778a",

language = "英语",

volume = "1",

pages = "3398--3405",

journal = "Materials Advances",

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}

TY - JOUR

T1 - Decoupled ion mobility in nano-confined ionic plastic crystal

AU - Zhu, Haijin

AU - Grzelak, Aleksandra

AU - Yunis, Ruhamah

AU - Martín, Jaime

AU - Forsyth, Maria

N1 - Publisher Copyright: © The Royal Society of Chemistry.

PY - 2020

Y1 - 2020

N2 - Nanoconfined ions have dramatically different local environments compared to the bulk, which profoundly affects the ion solvation and transport properties taking place in the confined space. Herein, we investigate the rotational and translation mobility of both cation and anions of an OIPC (diethyl)(methyl)(isobutyl)phosphonium hexafluorophosphate) confined in 40 and 180 nm straight-through Al2O3 pores. The results revealed that the nanoconfined OIPC exhibit 44 times higher ionic conductivity than the bulk material at 30 °C. This enhancement is attributed to both the reduced tortuosity and the increased population of mobile species. More interestingly, the Al2O3 nanochannels were found to selectively enhance the rotation and translational motion of [P122i4] cation at elevated temperatures, whilst leaving that of the [PF6] anion less affected.

AB - Nanoconfined ions have dramatically different local environments compared to the bulk, which profoundly affects the ion solvation and transport properties taking place in the confined space. Herein, we investigate the rotational and translation mobility of both cation and anions of an OIPC (diethyl)(methyl)(isobutyl)phosphonium hexafluorophosphate) confined in 40 and 180 nm straight-through Al2O3 pores. The results revealed that the nanoconfined OIPC exhibit 44 times higher ionic conductivity than the bulk material at 30 °C. This enhancement is attributed to both the reduced tortuosity and the increased population of mobile species. More interestingly, the Al2O3 nanochannels were found to selectively enhance the rotation and translational motion of [P122i4] cation at elevated temperatures, whilst leaving that of the [PF6] anion less affected.

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U2 - 10.1039/d0ma00778a

DO - 10.1039/d0ma00778a

M3 - 文章

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VL - 1

SP - 3398

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JO - Materials Advances

JF - Materials Advances

IS - 9

ER -

Decoupled ion mobility in nano-confined ionic plastic crystal

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