Ionic Liquid Purification Composition Viscosity Control
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Solution Overview
Problem
Existing organic material purification methods face challenges in efficiently purifying organic materials for organic light emitting devices, particularly due to high viscosity of ionic liquids at ambient temperatures, which hinders solubility and processing efficiency, and often require additional processing steps or high temperatures.
Innovation Solution
A mixed composition of an ionic liquid and an organic solvent, such as alcohol or ketone, is used to create a purification solution with a viscosity of 15 cP or less at 20° C. to 25° C., allowing for effective separation and purification of organic materials with different polarities at ambient temperature without the need for high pressure filters or significant changes in temperature or pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If ionic liquid is used for purification, then purification effectiveness is improved, but viscosity increases making processing difficult
Solution Approach 1:
The patent combines ionic liquid with organic solvent to create a composite purification composition. The ionic liquid provides purification effectiveness through selective solubility, while the organic solvent reduces viscosity to improve processability. This composite approach allows both benefits to coexist without compromising either purification quality or handling ease.
Solution Approach 2:
The patent modifies the physical parameters of the purification medium by adjusting the ratio of ionic liquid to organic solvent, controlling viscosity within a specific range (10-50 cP). This parameter optimization ensures the composition remains fluid enough for easy processing while maintaining sufficient ionic liquid content for effective purification.
2Stability of the object's composition
If high temperature is used for purification, then solubility is improved, but energy consumption and equipment requirements increase
Solution Approach 1:
The patent changes the chemical composition parameters of the purification medium by introducing organic solvent, which modifies the solubility characteristics of the system. This allows effective purification to occur at ambient temperature rather than requiring elevated temperatures, thereby reducing energy consumption and equipment complexity.
Solution Approach 2:
The organic solvent acts as an intermediary substance that facilitates the dissolution and separation processes at lower temperatures. It mediates between the ionic liquid and the organic material to be purified, enabling effective purification without the need for high temperature conditions.
3Manufacturing precision
If additional processing steps are added, then purification quality is improved, but process complexity increases
Solution Approach 1:
The patent merges the functions of multiple processing steps into a single purification composition. The combined ionic liquid-organic solvent system performs both dissolution and selective separation in one step, eliminating the need for multiple sequential processing steps while maintaining high purification quality.
Solution Approach 2:
The purification composition exhibits multi-functionality by simultaneously providing solubility enhancement, selective separation, and viscosity control within a single system. This universal composition replaces multiple specialized processing steps, simplifying the overall process while maintaining or improving purification quality.
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 efficient purification of organic materials at ambient temperature, reducing processing time and cost, while maintaining high purity and allowing for the recycling of the ionic liquid, thus addressing the limitations of existing methods.
Implementation Method 1
A mixed composition of an ionic liquid and an organic solvent, such as alcohol or ketone, is used to create a purification solution with a viscosity of 15 cP or less at 20° C. to 25° C.
Implementation Method 2
allowing for effective separation and purification of organic materials with different polarities at ambient temperature
Data Source
AI summary
An organic material purification composition, a mixed composition, and a method of purifying an organic material, the organic material purification composition including an ionic liquid in which a cation and an anion are combined; and an organic solvent, wherein the organic solvent includes an alcohol or a ketone.