Facilitated Ion Transport in Smectic Ordered Ionic Liquid Crystals

Lee, Jun Young; Han, Kee Sung; Lee, Je Seung; Lee, Albert S.; Park, Seo Kyung; Hong, Sung Yun; Lee, Jong Chan; Mueller, Karl T.; Hong, Soon Man; Koo, Chong Min

doi:10.1002/adma.201602702

Cited by 41 publications

(29 citation statements)

References 44 publications

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“…Will they perform better than conjugated polymers thanks to their ability to self‐assemble into layers? Interestingly, smectic ordered ionic liquid crystals are known to facilitate ion transport . To maximize the product of µ OECT by C* , it seems logical that ions should be separated by a certain distance from charges on π‐systems to prevent a too strong Coulomb interaction that would decrease µ OECT .…”

Section: Charge and Ion Transportmentioning

confidence: 99%

Molecular Semiconductors for Logic Operations: Dead‐End or Bright Future?

et al. 2020

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The field of organic electronics has been prolific in the last couple of years, leading to the design and synthesis of several molecular semiconductors presenting a mobility in excess of 10 cm2 V−1 s−1. However, it is also started to recently falter, as a result of doubtful mobility extractions and reduced industrial interest. This critical review addresses the community of chemists and materials scientists to share with it a critical analysis of the best performing molecular semiconductors and of the inherent charge transport physics that takes place in them. The goal is to inspire chemists and materials scientists and to give them hope that the field of molecular semiconductors for logic operations is not engaged into a dead end. To the contrary, it offers plenty of research opportunities in materials chemistry.

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Section: Charge and Ion Transportmentioning

confidence: 99%

Molecular Semiconductors for Logic Operations: Dead‐End or Bright Future?

et al. 2020

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“…It is likely that the lithium ion mobility is also enhanced in the confined space due to thermodynamic effects that need to be further investigated. 29,30 We employed the Ltf-C 18 E 10 LLC mesophase as a gel electrolyte in a graphene optical modulator to evaluate the electro-optical performance of the LLC gels. For this purpose, five compositions were chosen with an Ltf/C 18 E 10 mole ratio of 4, 6, 8, 10, and 12.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Lyotropic Liquid-Crystalline Mesophase of Lithium Triflate–Nonionic Surfactant as Gel Electrolyte for Graphene Optical Modulator

et al. 2017

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Lithium salt (noncoordinating anions, such as lithium triflate (Ltf)) gel electrolytes may be key for the practical use of electrochemical devices. We introduce a new lyotropic liquid-crystalline (LLC) mesophase using Ltf, a small amount of water (as low as 1.3 water per Ltf), and nonionic surfactant (C 18 H 37 (OCH 2 CH 2 ) 10 OH, C 18 E 10 ). The LLC phase forms over a broad range of Ltf/C 18 E 10 mole ratios, 2−18. The clear ethanol solution of the ingredients can be either directly spin-coated over a glass substrate to form a gel phase or it can be prepared as a gel by mixing Ltf, water, and C 18 E 10 . The mesophase leaches out surfactant molecules at low salt concentrations, but at a salt/surfactant mole ratio of above 8, the phase is homogeneous with a cubic mesostructure, fully transparent in the visible optical region, mechanically flexible, and an effective gel electrolyte. We have observed a large electrostatic doping on graphene with the Fermi energy level of ∼1.0 eV using Ltf-C 18 E 10 gel electrolytes. The Ltf-based gels demonstrate better properties than commonly used ionic liquid electrolyte in graphene optical modulators. The stability of the new gel electrolytes and their superior performance make them suitable electrolytes for use in graphene-based optical modulators.

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“…Smectic liquid crystals have the benefit that they can be aligned using well-known alignment techniques [ 65 ], typically used in the liquid crystal display industry. Traditionally, ion conducting membranes have been prepared from either low molecular weight smectic liquid crystals [ 66 , 67 , 68 , 69 , 70 ], or from polymers [ 33 , 71 ]. Although these materials show unique anisotropic ionic conducting properties, they have a low degree of porosity and mechanical strength.…”

Section: Nanoporous Lc Networkmentioning

confidence: 99%

Nanoporous Polymers Based on Liquid Crystals

et al. 2018

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In the present review, we discuss recent advances in the field of nanoporous networks based on polymerisable liquid crystals. The field has matured in the last decade, yielding polymers having 1D, 2D, and 3D channels with pore sizes on the nanometer scale. Next to the current progress, some of the future challenges are presented, with the integration of nanoporous membranes in functional devices considered as the biggest challenge.

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Facilitated Ion Transport in Smectic Ordered Ionic Liquid Crystals

Cited by 41 publications

References 44 publications

Molecular Semiconductors for Logic Operations: Dead‐End or Bright Future?

Molecular Semiconductors for Logic Operations: Dead‐End or Bright Future?

Lyotropic Liquid-Crystalline Mesophase of Lithium Triflate–Nonionic Surfactant as Gel Electrolyte for Graphene Optical Modulator

Nanoporous Polymers Based on Liquid Crystals

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