A poly(ionic liquid)-pillar[5]arene honeycombed isoporous membrane for high performance Cu2+ sensors

Ni, Yunxia; Yin, Ming‐Jie; Dong, Shengyi; Huang, Feihe; Zhao, Qiang

doi:10.1016/j.apsusc.2019.144056

Cited by 14 publications

(6 citation statements)

References 57 publications

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“…Porous polyelectrolyte membranes (PPMs) have received considerable interests in both academia and industry [ 1–5 ] because their ionic feature renders this class of materials with unique functions and a wide spectrum of potential applications ranging from sensor, [ 6–8 ] separation, [ 9–12 ] filtration, [ 13–15 ] actuation [ 16,17 ] to catalysis. [ 18–20 ] Specially as for catalysis, the porous structure can provide a possible support environment to immobilize nanoparticles, and the porous membrane morphology can permit flow of reactions within membrane which can prevent leaching of metal nanoparticle (MNP) catalyst for continuous catalytic reaction and facilitate its easy separation from the reaction mixture.…”

Section: Figurementioning

confidence: 99%

Hydrazine‐Enabled One‐Step Synthesis of Metal Nanoparticle–Functionalized Gradient Porous Poly(ionic liquid) Membranes

KhorsandKheirabad

Zhou

Xie

et al. 2020

Macromol. Rapid Commun.

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In this communication, a one‐step synthetic route is reported toward free‐standing metal‐nanoparticle‐functionalized gradient porous polyelectrolyte membranes (PPMs). The membranes are produced by soaking a glass‐plate‐supported blend film that consists of a hydrophobic poly(ionic liquid) (PIL), poly(acrylic acid), and a metal salt, into an aqueous hydrazine solution. Upon diffusion of water and hydrazine molecules into the blend film, a phase separation process of the hydrophobic PIL and an ionic crosslinking reaction via interpolyelectrolyte complexation occur side by side to form the PPM. Simultaneously, due to the reductive nature of hydrazine, the metal salt inside the polymer blend film is reduced in situ by hydrazine into metal nanoparticles that anchor onto the PPM. The as‐obtained hybrid porous membrane is proven functional in the catalytic reduction of p‐nitrophenol. This one‐step method to grow metal nanoparticles and gradient porous membranes can simplify future fabrication processes of multifunctional PPMs.

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Section: Figurementioning

confidence: 99%

Hydrazine‐Enabled One‐Step Synthesis of Metal Nanoparticle–Functionalized Gradient Porous Poly(ionic liquid) Membranes

KhorsandKheirabad

Zhou

Xie

et al. 2020

Macromol. Rapid Commun.

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“…This concept turned our attention to host-guest chemistry, as there are a wide variety of systems that have been used as a host for active molecules resulting in supramolecular complexes for a wide range of applications. [34][35][36][37][38] Among host molecules, pillar[n]arenes [39,40] represent a widely explored material for a number of reasons: 1) Their potential use as chemical sensors based on host-guest mechanisms, with examples including the detection and separation of volatile organic solvents or air pollutants, [41,42] selective adsorption and sensitive detection of metal ions, [43,44] and supramolecular networks for light modulation, [45] thereby giving rise to an extensive range of applications. [46][47][48][49][50][51][52][53][54][55][56][57] 2) Pillar[n]arenes are synthetically easy to functionalize on their upper and lower rims; [58] last but not least 3) they spontaneously arrange themselves in layers, and are readily deposited on surfaces.…”

Section: Introductionmentioning

confidence: 99%

Sheathed Molecular Junctions for Unambiguous Determination of Charge‐Transport Properties

Herrer

Naghibi

Marín

et al. 2023

Adv Materials Inter

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The combination of the drastic reduction in size with the appearance of new properties at the nanoscale have opened new avenues in the use of supramolecular materials, [5][6][7][8] with a number of nanodevices being described and developed for technological [9][10][11] or biological applications. [1,12] In the field of molecular electronics single molecule devices represent the ultimate miniaturization concept. These have evolved from the seminal paper from Aviram and Ratner, [13] which is a foundational work in the field of molecular electronics, and which proposed that molecular devices can act as electrical molecular rectifiers. There has been a renaissance of this area in recent years, [14] which has been boosted by promising applications beyond the initially envisioned one (electrical circuitry at the nanoscale), including single molecular sensing, thermoelectrics, heat transfer, spintronics, switching devices, and biomolecular electronics. [15][16][17][18][19] Despite intense research in the areas of molecular electronics and single molecule devices some key challenges remain unsolved. Reproducibility in the conductance measurement is a recurrent problem in the single-molecule electronics field Future applications of single-molecular and large-surface area molecular devices require a thorough understanding and control of molecular junctions, interfacial phenomena, and intermolecular interactions. In this contribution the concept of single-molecule junction and host-guest complexation to sheath a benchmark molecular wire-namely 4,4′-(1,4-phenylenebis(ethyne-2,1diyl))dianiline -with an insulating cage, pillar[5]arene 1,4-diethoxy-2-ethyl-5-methylbenzene is presented. The insertion of one guest molecular wire into one host pillar[5]arene is probed by 1 H-NMR (nuclear magnetic resonance), whilst the self-assembly capabilities of the amine-terminated molecular wire remain intact after complexation as demonstrated by XPS (X-ray photoelectron spectroscopy) and AFM (atomic force microscopy). Encapsulation of the molecular wire prevents the formation of π-π stacked dimers and permits the determination of the true single molecule conductance with increased accuracy and confidence, as demonstrated here by using the STM-BJ technique (scanning tunneling microscopy-break junction). This strategy opens new avenues in the control of single-molecule properties and demonstrates the pillararenes capabilities for the future construction of arrays of encapsulated single-molecule functional units in large-surface area devices.

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“…For example, BF method is a well-studied technique for constructing microporous structures on the surface by polymer coating, with advantages of simplicity, efficiency, operability, and universality. Since its first report in 1994, [21] numerous studies have demonstrated the versatility of the BF method for a variety of polymers and substrates in fields such as membranes, [22,23] templates, [24] responsive surfaces, [25] and catalysts. [18] Although several reports have shown its potential in fabric surfaces and wearable electronic applications, [8,26,27] most of these works face the same challenge that is the rarely mentioned, namely, poor solvent resistance.…”

Section: Introductionmentioning

confidence: 99%

A Convenient and Universal Strategy toward Solvent‐Tolerant Microporous Structure for High‐Performance Wearable Electronics and Smart Textiles

Hu,

Zheng,

et al. 2023

Adv Materials Technologies

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Micro/nanostructures can increase effective surface area and enhance the performance of wearable devices, such as the sensitivity of sensors and output of triboelectric nanogenerators. Empowering commercial fibers and fabrics with durable and robust micro/nanostructures has become a major research concern for sustainable wearables. Many technologies are developed to fabricate micron/nanostructures on fibers and textiles, such as breath figure method, electrospinning, and direct imprinting thermal drawing. However, most of these methods have their own limitations toward mass production and real‐life application, including poor solvent resistance, time assuming, requiring expensive equipment, and limited capacity for post‐adjustment of commercial textiles. Here, a plasma‐enhanced breath figure (PEBF) technique to fabricate solvent‐tolerant microporous structure on existing fabrics with tailored pore size is developed. By combining the wearable nature of fabrics and the surface engineering power of PEBF, the fabricated solvent‐tolerant microporous fabric offers excellent flexibility, washability, breathability, and suitability for large‐scale production, as well as the advantages of cost effectiveness and fast production. Furthermore, wearable triboelectric nanogenerators based on solvent‐resistant microporous structured fabrics, revealing the bright future of the PEBF technology in wearable devices and smart textiles are fabricated.

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A poly(ionic liquid)-pillar[5]arene honeycombed isoporous membrane for high performance Cu2+ sensors

Cited by 14 publications

References 57 publications

Hydrazine‐Enabled One‐Step Synthesis of Metal Nanoparticle–Functionalized Gradient Porous Poly(ionic liquid) Membranes

Hydrazine‐Enabled One‐Step Synthesis of Metal Nanoparticle–Functionalized Gradient Porous Poly(ionic liquid) Membranes

Sheathed Molecular Junctions for Unambiguous Determination of Charge‐Transport Properties

A Convenient and Universal Strategy toward Solvent‐Tolerant Microporous Structure for High‐Performance Wearable Electronics and Smart Textiles

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