Polymeric Dielectric Coordination Complex for Stretchable Electronics
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Solution Overview
Problem
Current polymeric dielectrics fail to simultaneously achieve mechanical characteristics, electrical characteristics, and stretchability, which are essential for deformable electronic materials in wearable devices that need to mimic human skin and endure various human motions.
Innovation Solution
A polymeric dielectric is developed using a coordination complex of a modified elastic polymer and a metal cation, where the modified elastic polymer includes an organic ligand moiety that coordinates the metal cation, enhancing stretchability and electrical stability, and is applied in electronic devices such as thin film transistors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional polymeric dielectrics are used, then ease of manufacture is maintained, but mechanical characteristics, electrical characteristics, and stretchability cannot be simultaneously achieved
Solution Approach 1:
The patent employs composite materials by combining elastic polymer chains with metal cations to form coordination complexes. The elastic polymer contains organic ligand moieties that coordinate with metal cations, creating a composite structure that simultaneously provides mechanical elasticity, electrical dielectric properties, and stretchability. This composite approach resolves the contradiction by integrating multiple functional components into a unified material system.
Solution Approach 2:
The patent utilizes parameter changes by adjusting the coordination chemistry between organic ligands and metal cations. By selecting specific metal cations (such as Zn2+, Cu2+, Ni2+) and controlling their coordination with nitrogen-containing heterocycles in the polymer chain, the material's dielectric constant, mechanical strength, and stretchability are tuned to achieve simultaneous optimization of multiple characteristics.
2Strength
If stretchability is enhanced through elastic polymers, then mechanical flexibility improves, but electrical characteristics deteriorate
Solution Approach 1:
The patent introduces metal cations as intermediaries between the elastic polymer chains. These metal cations form coordination complexes with the organic ligand moieties, creating crosslinked structures that maintain electrical dielectric properties while preserving the underlying elastic network's stretchability. The metal cation coordination acts as a mediator that bridges mechanical and electrical functionality.
Solution Approach 2:
The patent applies local quality by creating localized coordination complex regions within the polymer matrix. The organic ligand moieties are distributed along the polymer chains at specific intervals, creating localized metal coordination sites that provide electrical functionality without compromising the overall elastic network's stretchability. This localized approach allows simultaneous optimization of both properties.
3Reliability
If metal cations are coordinated with organic ligand moieties, then electrical stability improves, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-installing organic ligand moieties into the polymer chains during polymer synthesis. The elastic polymer is first synthesized with nitrogen-containing heterocycle groups incorporated into the backbone, and then metal cations are coordinated in subsequent steps. This preliminary incorporation of ligands simplifies the overall manufacturing process by avoiding complex post-synthesis modifications.
Solution Approach 2:
The patent utilizes self-service through self-assembly of coordination complexes. When metal cations are introduced to the polymer solution, they automatically coordinate with the organic ligand moieties through thermodynamic driving forces, forming the desired coordination complex structure without requiring complex external control or additional processing steps. This self-organizing behavior simplifies manufacturing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a polymeric dielectric with a dielectric constant of 3.0 to 3.6 and tensile strength of 100% to 400%, enabling self-healing and improved mechanical and electrical performance in stretchable electronic devices.
Implementation Method 1
a coordination complex of a modified elastic polymer and a metal cation. The modified elastic polymer may include an organic ligand moiety that coordinates the metal cation
Data Source
AI summary
A polymeric dielectric may include a coordination complex of a modified elastic polymer and a metal cation. The modified elastic polymer may include an organic ligand moiety that coordinates the metal cation in a main chain of the elastic polymer. Provided are a method of manufacturing the same, and an electronic device and a thin film transistor including the same.