Metal-Containing Silyloxy Capping Agent for Optical Particles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High refractive index materials used in optical components require improved dispersibility and refractive index performance, which existing capping agents such as organosilanes do not adequately address.
Innovation Solution
A metal-containing silyloxy compound with a specific structure is used as a capping agent to enhance the dispersibility and refractive index of particles, involving a production method that includes surface coating and reaction steps to achieve the desired compound structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional organosilane capping agents are used on metal oxide particles, then the particles can be capped, but the dispersibility and refractive index performance are insufficient for high-performance optical components
Solution Approach 1:
The patent employs a composite capping agent structure combining organosilane with metal-containing silyloxy groups. This composite approach integrates the surface-binding capability of organosilane with the high refractive index contribution of metal oxide clusters, achieving both excellent dispersibility and enhanced refractive index performance required for optical components
Solution Approach 2:
The invention modifies the chemical structure of conventional organosilane capping agents by introducing metal-containing silyloxy groups. This structural parameter change transforms the capping agent from a simple organic molecule to a hybrid organic-inorganic compound with superior optical properties and dispersibility characteristics
2Illumination intensity
If metal oxide particles are dispersed in organic components to achieve high refractive index, then the refractive index increases, but the dispersibility of particles deteriorates
Solution Approach 1:
The metal-containing silyloxy compound acts as an intermediary between metal oxide particles and the organic dispersion medium. It provides surface coverage that prevents particle aggregation while maintaining high refractive index, effectively mediating the interaction between inorganic particles and organic components to achieve both dispersibility and optical performance
3Reliability
If the surface of metal oxide particles is capped with conventional capping agents, then particle aggregation is reduced, but the refractive index performance is insufficient
Solution Approach 1:
The capping agent is designed as a composite structure containing both organic silane groups for surface attachment and metal-containing silyloxy groups for refractive index enhancement. This composite architecture allows the material to simultaneously provide steric stabilization for dispersibility and high electron density for elevated refractive index
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 metal-containing silyloxy compound effectively improves the dispersibility and refractive index of particles, making them suitable for high-performance optical components.
Implementation Method 1
a particle coating step of reacting particles having a hydroxyl group on the surface with a compound represented by the following formula (30) to obtain particles having a structure represented by the formula (1) on the surface
Data Source
AI summary
Provided are: a compound used as a capping agent which imparts particles having excellent dispersibility and refractive index; particles coated with the compound; a method for producing the same; and a dispersion composition containing said particles. A compound according to the present invention has a structure represented by formula (1). In the formula, R1 represents an organic group having 1-30 carbon atoms, R2 represents a group represented by OR3 or a group represented by formula (2), R3 represents an organic group having 1-30 carbon atoms, n1 and n2 each represent an integer of at least 0, n1+2×n2 represents a valence determined by the type of L, L represents aluminum, gallium, yttrium, titanium, zirconium, hafnium, bismuth, tin, vanadium, or tantalum, * represents a bond, R4 and R5 each represent an organic group having 1-30 carbon atoms which may have an oxygen atom. Particles according to the present invention have a structure represented by formula (1) on a surface thereof.