Nonlinear Optically Active Copolymer Composition Using Benzoate Solvent
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Solution Overview
Problem
Existing compositions of nonlinear optically active copolymers face challenges in achieving high concentration dissolution and maintaining storage stability, which are essential for obtaining sufficient film thickness and desired electro-optic properties in optical elements.
Innovation Solution
The use of benzoate as a solvent allows for a nonlinear optically active copolymer to be dissolved at a high concentration of 20% by mass, while also preventing decomposition and ensuring excellent storage stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the concentration of nonlinear optically active copolymer dissolved in solvent is increased to obtain sufficient film thickness, then the film thickness is improved, but the storage stability deteriorates due to decomposition of the copolymer
Solution Approach 1:
The patent introduces a specific solvent as an intermediary substance that mediates between the copolymer and the environment. The solvent is carefully selected to provide both high dissolution capacity (enabling 20% concentration) and protective function (preventing decomposition), thus resolving the contradiction between film thickness and storage stability
Solution Approach 2:
The patent changes the chemical parameters of the solvent system by selecting specific solvents with appropriate polarity, boiling point, and chemical compatibility. This parameter optimization allows the copolymer to be dissolved at high concentration while maintaining storage stability, as the solvent parameters are tuned to prevent both precipitation and decomposition
2Quantity of substance
If the concentration of nonlinear optically active copolymer is increased to 20% by mass, then the electro-optic properties are improved, but the decomposition of copolymer increases
Solution Approach 1:
The solvent acts as a protective intermediary between the copolymer molecules at high concentration. By selecting solvents with specific chemical properties, the patent prevents direct interaction between copolymer chains that would lead to decomposition, while still allowing high concentration dissolution
Solution Approach 2:
The patent creates a chemically inert environment using carefully selected solvents that do not react with the copolymer. This inert solvent environment allows the copolymer to be maintained at high concentration (20% by mass) without undergoing decomposition reactions
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
This approach enables the formation of uniform films with sufficient thickness, allowing the nonlinear optically active copolymer to exhibit its electro-optic properties effectively, and maintains the nonlinear optical quality over a long period.
Implementation Method 1
nonlinear optical materials are materials that exhibit a polarization response that is proportional to the square, cube or higher-order terms of the magnitude of electrolysis caused by light, and those that exhibit a first-order electro-optic effect (Pockels effect), which is one of the second-order nonlinear optical effects
Implementation Method 2
a nonlinear optically active copolymer-containing composition comprising a nonlinear optically active copolymer and a benzoate
Data Source
AI summary
A composition containing a nonlinear optically active copolymer, the composition including a solvent with which the nonlinear optically active copolymer is dissolved with high concentration and the composition obtained demonstrates good storage stability. A composition containing a nonlinear optically active copolymer, comprising a nonlinear optically active copolymer and a benzoate.