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The Electrical Double Layer01:30

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

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Amino-Functionalized Surface Engineering of Elastomers for Robust PEDOT:PSS-Based Stretchable Electronics.

Anky Fitrian Wibowo1, Muhamad Junda Azizi2, Nurwarrohman Andre Sasongko3

  • 1Industry-University Cooperation Foundation, Pukyong National University, Busan 48513, Republic of Korea.

ACS Applied Materials & Interfaces
|December 12, 2025
PubMed
Summary
This summary is machine-generated.

Surface modification with 2,6-diaminopimelic acid (DAP) enhances stretchable device performance. This amino-functionalization improves elastomer integration with conducting polymers, boosting conductivity and stability for wearable electronics.

Keywords:
2,6-diaminopimelic acid (DAP)PEDOT:PSSamino-functionalizationinterfacial adhesionstretchable devicessurface engineering

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Area of Science:

  • Materials Science
  • Surface Engineering
  • Polymer Science

Background:

  • Stretchable devices are crucial for wearable electronics, soft robotics, and biomedical applications.
  • Integrating elastomers with conducting polymers like poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) presents surface engineering challenges.
  • Improved interfacial properties are needed for robust and high-performance stretchable electronics.

Purpose of the Study:

  • To develop a novel surface modification strategy for stretchable device substrates.
  • To enhance the integration and performance of elastomers with lab-synthesized PEDOT:PSS using 2,6-diaminopimelic acid (DAP).
  • To investigate the impact of DAP surface functionalization on interfacial adhesion, mechanical stability, and electrical conductivity.

Main Methods:

  • Surface functionalization of elastomer substrates with 2,6-diaminopimelic acid (DAP).
  • Characterization of modified films using Raman spectroscopy and X-ray photoelectron spectroscopy (XPS).
  • Assessment of electrical properties under mechanical deformation and measurement of adhesion energy.

Main Results:

  • DAP functionalization significantly improved adhesion, mechanical stability, surface energy, and electrical conductivity at the elastomer-PEDOT:PSS interface.
  • Chemical analyses confirmed DAP acts as an interfacial bridge, forming bonds between the elastomer and PEDOT:PSS.
  • Enhanced adhesivity was quantified by a lower contact angle and an adhesion energy of 134.4 mN/m.

Conclusions:

  • DAP-based surface modification is a highly effective strategy for improving key properties of stretchable devices.
  • This approach facilitates the development of robust stretchable electronics, including wearable heaters and ACEL devices.
  • The findings pave the way for broader applications of advanced stretchable technologies.