Block Copolymer Stretchable Electroluminescent Elastomer
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Solution Overview
Problem
Traditional elastomers lack intrinsic stretchability and electroluminescent properties, leading to poor performance in stretchable optoelectronic devices, and existing methods for achieving electroluminescence often result in phase separation and reduced stability.
Innovation Solution
A block copolymer intrinsically stretchable electroluminescent elastomer is developed through chemical crosslinking of an organic electroluminescence unit into traditional elastomers, using styrene and 1,3-butadiene monomers via anionic polymerization, enhancing both stretchability and photoelectric properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional elastomers are used, then excellent tensile properties are achieved, but optical and electrical properties are lacking
Solution Approach 1:
The patent creates a composite material by integrating electroluminescent functional units into the elastomer matrix through chemical crosslinking. The resulting material combines the tensile properties of elastomers with the optical and electrical properties of electroluminescent materials, achieving a unified material that simultaneously provides stretchability and electroluminescence functionality
2Strength
If photoluminescent elastomers are used, then excellent tensile properties and light-emitting properties are achieved, but electroluminescent properties are lacking
Solution Approach 1:
The patent changes the fundamental parameter of light emission mechanism by introducing electroluminescent functional units that can generate light through electrical excitation rather than photoluminescence. This parameter change enables the material to respond to electrical stimuli while maintaining elastomeric properties, achieving intrinsic electroluminescence in a stretchable matrix
3Reliability
If electronic functional materials are physically blended with traditional elastomers, then electroluminescence performance is achieved, but intrinsic stretchability is lost
Solution Approach 1:
The patent merges the electroluminescent functional units with the elastomer matrix at the molecular level through chemical crosslinking, creating a unified intrinsically stretchable electroluminescent elastomer. This merging eliminates the need for physical blending and prevents phase separation, maintaining intrinsic stretchability while achieving electroluminescence performance
Solution Approach 2:
The patent introduces electroluminescent functional units at specific locations within the elastomer structure through controlled chemical crosslinking. The functional units are locally integrated into the polymer matrix, ensuring that electroluminescence occurs at specific sites while the overall material maintains its elastomeric stretchability
4Reliability
If physical blending is used to prepare stretchable electroluminescent devices, then electroluminescence is achieved, but phase separation and morphology changes occur during stretching-release process
Solution Approach 1:
The patent creates a chemically bonded composite material where electroluminescent functional units are covalently linked to the elastomer matrix. This chemical bonding prevents phase separation during stretching and release cycles, maintaining morphological stability and compositional homogeneity while enabling electroluminescence functionality
Solution Approach 2:
The patent ensures uniform distribution of electroluminescent functional units throughout the elastomer matrix through controlled chemical crosslinking. This local integration at the molecular level prevents aggregation and phase separation, maintaining homogeneous morphology and stable electroluminescence performance during mechanical deformation
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 resulting elastomer exhibits excellent luminescence, high carrier mobility, and thermal stability, enabling high-stretchability and high-efficiency electroluminescent devices with improved stability and compatibility.
Implementation Method 1
using styrene and 1,3-butadiene monomers via anionic polymerization
Implementation Method 2
The invention introduces the organic electroluminescence unit into the traditional elastomer by chemical crosslinking
Data Source
AI summary
The invention discloses a block copolymer intrinsic stretchable electroluminescent elastomer and its preparation method and application. This type of elastomer is made from organic electroluminescent monomers, styrene and 1,3-butadiene through anionic polymerization. The innovation of the present invention is: for the first time, the organic electroluminescence unit is introduced into the elastomer by chemical crosslinking. On the basis of improving the intrinsic stretchability of the elastomer, at the same time, it has characteristics of excellent luminescence and high carrier mobility, novel structure and unique design strategy; meanwhile, it also solves the inherent non-stretchability problem of traditional organic optoelectronic materials and the problem that traditional elastomers do not have electroluminescent properties. This type of elastomer is used as a light-emitting layer material to prepare organic electroluminescent devices with high stability, high stretchability and high efficiency.