Ionic Liquid‐Based Stimuli‐Responsive Functional Materials

Cui, Jiecheng; Li, Yang; Chen, Dong; Zhan, Tian‐Guang; Zhang, Kang‐Da

doi:10.1002/adfm.202005522

Cited by 80 publications

(54 citation statements)

References 167 publications

(228 reference statements)

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“…[15] In this work, we report the first iongel which can be considered biocompatible and 3D printable. Although there have been examples of iongels for body sensor applications [16][17][18][19][20][21][22][23] and developed for 3D printing process, [24,25] to the best of our knowledge there are not reports about iongels that combine both. Therefore, biocompatible cholinium-based iongels were prepared by a simple method and formed by hydrogen bonding between poly(vinyl) alcohol (PVA) and plant-derived polyphenol compounds (PhCs).…”

Section: Introductionmentioning

confidence: 99%

3D Printable and Biocompatible Iongels for Body Sensor Applications

Luque

Picchio

Martins

et al. 2021

Adv Elect Materials

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Soft‐ionic materials with biocompatibility and 3D printability are needed to develop next‐generation devices to interface between electronic and biological signals. Herein, thermoreversible and biocompatible ionic liquid gels or iongels, which can be processed by direct ink writing are reported. The iongels are designed by taking advantage of polyvinyl alcohol/phenol interactions to gelify biocompatible cholinium carboxylate ionic liquids. The obtained iongels are stable, soft, and flexible materials (Young modulus between 14 and 70 kPa) with high ionic conductivity (1.8 × 10–2 S cm–1). Interestingly, they presented thermoreversible properties with gel–sol transitions ranging from 85 and 110 °C, which allows the iongel processing via direct ink writing 3D printing by material extrusion at temperatures over its transition. These 3D printable iongels are integrated into a variety of body sensors applications, namely pressure sensors, motion sensors and electrodes for electrophysiological recordings. The iongels are used as pressure sensors with a sensitivity of 0.1 kPa–1, ten times higher than that of others similar materials reported so far; showing its ability to detect human motion. Furthermore, the iongels showed excellent performance in electrodes for electrocardiography (ECG) recording, presenting good stability over time with electrocardiographic waves maintained their typical shape even after weeks.

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Section: Introductionmentioning

confidence: 99%

3D Printable and Biocompatible Iongels for Body Sensor Applications

Luque

Picchio

Martins

et al. 2021

Adv Elect Materials

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“…[28] Our work introduces a modular preparation of coacervation driven by cation-π interactions in poly(ionic liquid)s (PILs), a sub-class of polyelectrolytes with intriguing properties and materials functionalities. [29][30][31][32] A "cation-methylene-phenyl" (C-M-P) motif which combines cations and π entities was designed and built into the ionic liquid (IL) monomers. The synthesis of IL monomers requires only a one-step quaternization.…”

Section: Introductionmentioning

confidence: 99%

“…Importantly, this design enables the unprecedented modular formation of PILs coacervates without hindering the various other beneficial properties of PILs. [29][30][31][32] The C-M-P sequence was explicitly translated into saline-triggered coacervation and exhibited unprecedented wet adhesion in marine applications.…”

Section: Introductionmentioning

confidence: 99%

A Cation‐Methylene‐Phenyl Sequence Encodes Programmable Poly(Ionic Liquid) Coacervation and Robust Underwater Adhesion

Zhu

Wei

Chen

et al. 2021

Adv Funct Materials

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Appropriate deciphering and translation of sequence-dependent function inproteins is inspired by the cation-π interaction that is increasingly implicated in marine adhesives and membraneless organelles. A simplified cation-methylene-phenyl (C-M-P) sequence which enables triggerable poly(ionic liquid) coacervation is reported for the first time. Synthesis of the C-M-P structure motif requires only a one-step quaternization, which is facile compared to the linear sequence of distinct repeating units in model proteins and sequencecontrolled polymers. The C-M-P code confers modular coacervation and advanced wet adhesion to task-specific copolymers. It allows for exceptional underwater adhesion to various submerged substrates including glass (≈1 MPa) and porcine skins (140 KPa), paving the way for prospective adhesive applications in physiological saline and underwater marine salvage. This work introduces a powerful code that, in addition to combining the advantageous adaptive adhesive and phase properties of proteins, reduces the complexity in sequence design for programmable coacervates.

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“…The task-specific design of materials and the improvement of industrial processes through sustainable and greener ionic liquids (ILs) have emerged in the last decades in many fields of interest, such as catalysis [1][2][3], energy and electrochemistry [4], lubricants [5], the design of new materials for gas absorption [6], separation and extraction processes [7][8][9], the design of stimuli-responsive materials and sensors [10,11], and biomedical and pharmaceutical applications [12][13][14][15][16][17]. The application of ILs in such broad range of fields are supported by their great tuneability, since their final properties are dependent on the cation-anion selected pair.…”

Section: Introductionmentioning

confidence: 99%

Ecotoxicity and Hemolytic Activity of Fluorinated Ionic Liquids

Vieira¹,

Oliveira²,

Araújo³

et al. 2021

Sustainable Chemistry

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The task-specific design of ionic liquids (ILs) has emerged in several industrial and pharmaceutical applications. The family of ILs with fluorine tags equal to or longer than four carbon atoms, the fluorinated ionic liquids (FILs), combine the best properties of ILs with the ones of perfluorinated compounds, and are being designed for several specific purposes. In the pharmaceutical field, there is an urgency to search for novel antibacterial agents to overcome problems associated to antimicrobial resistances. Then, the main purpose of this work is to evaluate the environmental impact and the ability of FILs to be used as antibacterial agents against Pseudomonas stutzeri bacteria. Beyond its rare pathogenicity, these bacteria are also used as a bioremediation agent to treat several contamination sites. Then, it is important to determine which FILs have antibacterial properties, and which do not impact the bacterial growth. The biocompatibility of FILs was also evaluated through their hemolytic activity and represent a step forward the application of FILs in pharmaceutical applications. The results proved that high concentrations of FILs can have a reduced ecotoxicity and a high biocompatibility. [C8C1Im][CF3SO3] was identified as the most promising compound to be used as an antibacterial agent since it prevents the growth of bacteria at concentrations compatible with the red blood cells’ viability.

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Ionic Liquid‐Based Stimuli‐Responsive Functional Materials

Cited by 80 publications

References 167 publications

3D Printable and Biocompatible Iongels for Body Sensor Applications

3D Printable and Biocompatible Iongels for Body Sensor Applications

A Cation‐Methylene‐Phenyl Sequence Encodes Programmable Poly(Ionic Liquid) Coacervation and Robust Underwater Adhesion

Ecotoxicity and Hemolytic Activity of Fluorinated Ionic Liquids

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