Light-Emitting Particles with Inorganic Oxide Shell
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Solution Overview
Problem
Light-emitting particles with a polymer core tend to aggregate and have difficulty being functionalized due to surface affinity issues, such as hydrophilic polymers with hydrophilic silica cores, leading to binding challenges and poor dispersion in solvents.
Innovation Solution
A light-emitting particle design featuring a core with a matrix material and a surrounding inorganic oxide shell, such as silica, which encapsulates the polymer and provides functional surface groups for improved dispersion and binding capabilities, including carboxylic acid or polyether chains for biomolecule interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If light-emitting particles have a polymer core with hydrophilic properties, then they exhibit good solubility in water, but they tend to aggregate and have difficulty being functionalized due to surface affinity issues
Solution Approach 1:
The particle is divided into distinct functional segments: a hydrophobic polymer core containing the light-emitting system, a hydrophilic inorganic oxide shell (silica) providing solubility, and surface-functionalized groups enabling further conjugation. This segmentation allows each component to perform its specific function without interfering with others, resolving the contradiction between solubility and stability.
Solution Approach 2:
The invention uses a composite structure combining organic polymer material (hydrophobic core) with inorganic oxide material (hydrophilic shell). This composite approach integrates the advantages of both materials: the polymer provides light-emitting functionality while the silica shell provides solubility and prevents aggregation, simultaneously addressing both requirements.
2Strength
If the polymer core has high surface affinity, then it provides strong binding capability, but it causes difficulty in functionalization and poor dispersion in solvents
Solution Approach 1:
Different parts of the particle are given different functional qualities: the core maintains high binding affinity for target molecules, while the shell provides solubility and prevents aggregation. Surface functional groups are locally introduced on the shell to enable controlled conjugation with biomolecules. This local differentiation allows strong binding capability while maintaining ease of functionalization and good dispersion.
3Reliability
If a shell layer is added to improve dispersion and functionalization, then solubility and binding properties improve, but the device complexity increases
Solution Approach 1:
The inorganic oxide shell acts as an intermediary layer between the hydrophobic polymer core and the aqueous environment. This intermediary provides a hydrophilic interface that improves dispersion and solubility while also serving as a platform for introducing surface functional groups. The shell mediates between the core's binding capability and the environment's solubility requirements, improving overall performance without excessive complexity.
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 shell layer enhances the stability and functionalization of light-emitting particles, reducing aggregation and improving their solubility and binding properties, enabling effective use in applications like biomolecule marking and nucleic acid sequencing.
Implementation Method 1
a shell layer comprising an inorganic oxide in contact with and surrounding the core
Implementation Method 2
a light-emitting system comprising a polymer
Data Source
AI summary
A light-emitting particle comprising a core comprising a matrix material and a light-emitting system comprising a polymer and a shell layer comprising an inorganic oxide in contact with and surrounding the core.