Phenanthrene-Based Optical Resin Monomer for High Refractive Index
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Solution Overview
Problem
Current optical resins face challenges in achieving refractive indices of 1.7 or higher, which are necessary for advanced applications in displays, semiconductors, and solar energy due to limitations in thermal stability and viewing angles.
Innovation Solution
Development of phenanthrene-based compounds with a complex cardo structure, which are synthesized through specific oxidation and reaction steps, providing a high refractive index and enhanced thermal stability suitable for optical resins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional monomers with improved refractive indices (Chemical Formulas A to C) are used, then the refractive index of optical resins is improved, but the refractive index cannot reach 1.7 or higher
Solution Approach 1:
The patent changes the chemical structure parameters by introducing a phenanthrene-based complex cardo structure with specific substituents (R1a, R1b, R2a, R2b, R3a, R3b) and molecular weight ranges (100-1000 g/mol). This structural parameter change enables the refractive index to reach 1.7 or higher, overcoming the limitation of conventional monomers
Solution Approach 2:
The patent creates a composite molecular structure combining phenanthrene core with cardo structure and various functional substituents. This composite approach integrates multiple structural elements (aromatic rings, alkylene chains, oxygen-containing groups) to achieve the target refractive index while maintaining thermal stability
2Weight of moving object
If optical resins are used to replace glass materials, then weight is reduced and impact resistance is improved, but refractive index and thermal stability are insufficient
Solution Approach 1:
The patent optimizes molecular weight parameters (100-1000 g/mol) and structural composition parameters of the phenanthrene-based monomers to simultaneously achieve high refractive index (≥1.7) and thermal stability, while maintaining the lightweight advantage of optical resins over glass materials
3Ease of manufacture
If conventional optical resins are used, then manufacturing is easier and cost is lower, but viewing angle and light extraction efficiency are limited
Solution Approach 1:
The patent changes the optical parameters by introducing phenanthrene-based monomers with specific refractive indices (≥1.7), enabling broader viewing angles and improved light extraction efficiency in display applications while maintaining compatibility with existing optical resin manufacturing processes
Data Source
AI summary
Disclosed herein are a phenanthrene-based compound with a high-refractive index and a preparation method therefor. The compound has a phenanthrene-based complex cardo structure and can be used as a monomer in optical resins requiring a refractive index of 1.7 or higher. Due to the phenanthrene-based complex cardo structure of the compound, the fluidity of the molecular chains can be maximally suppressed, allowing for the production of resins with excellent thermal stability, characterized by a high glass transition temperature.