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Related Concept Videos

Ion Exchange01:17

Ion Exchange

621
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
621
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

578
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
578

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A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires
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Size-Selective Ionic Crosslinking Provides Stretchable Mixed Ionic-Electronic Conductors.

Junwoo Lee1, Hyunwoo Bark2, Yazhen Xue1

  • 1Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06520, USA.

Angewandte Chemie (International Ed. in English)
|August 19, 2023
PubMed
Summary
This summary is machine-generated.

Researchers developed intrinsically deformable organic conductors using size-selective ionic crosslinking. This method enhances softness, toughness, and conductivity for soft electronics and stretchable thermoelectric generators.

Keywords:
Organic ConductorsSize-Selective Ionic CrosslinkingStretchabilityThermoelectric Generators

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Soft Robotics

Background:

  • Mechanically compliant conductors are crucial for soft electronics and robotics.
  • A key challenge is balancing mechanical properties with charge mobility in organic conductors.

Purpose of the Study:

  • To address the trade-off between mechanical performance and charge mobility in organic conductors.
  • To develop intrinsically deformable organic conductors with enhanced properties.

Main Methods:

  • Utilized size-selective ionic crosslinking with length-regulated oligo(ethylene glycol) pendant groups and metal ions.
  • Investigated poly(3,4-ethylenedioxythiophene):polystyrene sulfonate composite materials.

Main Results:

  • Achieved simultaneous improvement in softness, toughness, and mixed ionic-electronic conductivity.
  • Demonstrated enhanced charge carrier accumulation in response to temperature gradients.
  • Showcased improved stability against humidity for stretchable thermoelectric generators.

Conclusions:

  • Size-selective ionic crosslinking offers a viable solution for creating high-performance, intrinsically deformable organic conductors.
  • The developed materials are promising for advanced applications like stretchable thermoelectric generators.