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Related Concept Videos

Colloidal precipitates01:09

Colloidal precipitates

531
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
531

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Related Experiment Video

Updated: Jun 15, 2025

A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles
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Spontaneous Photonic Jammed Packing of Core-Shell Colloids in Conductive Aqueous Inks for Non-Iridescent Structural

Wei-Tsung Chuang1,2, Shu-Ping Chen3, Yu-Bo Tsai4

  • 1National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan.

ACS Applied Materials & Interfaces
|August 22, 2024
PubMed
Summary

Researchers developed conductive aqueous inks with bioinspired structural colors for wearable electronics. These inks combine conductivity and vibrant, customizable colors for sustainable and stylish electronic devices.

Keywords:
bioinspirationcolloidal aggregatesconductive inkscore−shell colloidsmaximum jammed packingnon-iridescent structural colorsphotonic glassesself-assembly

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Polymer Chemistry

Background:

  • Integrating structural colors and conductivity into aqueous inks is crucial for advancing wearable electronics.
  • Current methods often lack sustainability, flexibility, or aesthetic appeal.

Purpose of the Study:

  • To introduce bioinspired color engineering into conductive aqueous inks.
  • To develop a self-assembly approach for creating inks with tunable structural colors and conductivity.

Main Methods:

  • Mixing poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) with sulfonic acid-modified polystyrene (sPS) colloids.
  • Utilizing small-angle X-ray scattering to analyze self-assembly and photonic aggregate formation.
  • Employing dissipative particle dynamics simulations to understand polymer-colloid interactions.
  • Using finite-difference time-domain methods to evaluate structural color generation.

Main Results:

  • Achieved spontaneous structural coloration in inks through self-assembly of PEDOT:PSS and sPS into core-shell structures and photonic aggregates.
  • Demonstrated tunable color saturation and conductivity up to 36 S cm⁻¹ with additives.
  • Enhanced water resistance and mechanical stability using a cross-linker.

Conclusions:

  • Developed versatile conductive inks with bioinspired structural colors for flexible, wearable electronics.
  • The inks enable eco-friendly, visually appealing, and customizable electronic devices through various fabrication methods.