Resin-Platinum Composite for Immunological Labeling
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Solution Overview
Problem
Existing resin-metal composites used as labeling substances in immunological measurements tend to aggregate when bound to ligands like antibodies, leading to poor handling properties and reduced detection sensitivity.
Innovation Solution
A resin-platinum composite is developed, where multiple platinum particles are fixed to a resin particle, with platinum particles distributed three-dimensionally on the surface layer section of the resin particle, enhancing dispersibility and preventing aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If colored fine particles (colloidal metal particles or dye-colored latex particles) are used as labeling substances, then visual confirmation becomes possible without special analyzing devices, but the color tone is insufficiently vivid and dark, resulting in poor visibility
Solution Approach 1:
The patent uses composite latex particles comprising a core latex particle and metal particles (gold, silver, or copper) dispersed on its surface. This composite structure combines the functional properties of latex particles with the vivid coloration and light-absorbing characteristics of metals, achieving both ease of manufacture and superior visibility. The metal particles provide strong color tone while the latex core maintains handling properties.
Solution Approach 2:
The patent applies local quality by concentrating metal particles specifically on the surface layer of the latex particle rather than throughout the entire particle. This surface-localized metal distribution maximizes light interaction for vivid coloration while maintaining the bulk latex structure for proper handling and binding capabilities.
2Illumination intensity
If the coloring amount of dye is increased to improve visual determination, then color intensity increases, but the dye covers the surface of latex particles, impairing the original surface state and making it difficult to bind antigens or antibodies
Solution Approach 1:
The patent replaces dye molecules with metal particles as the coloring agent. Metal particles provide intense coloration without forming a continuous coating that would block antigen-antibody binding sites. The discrete particle nature of metals on the latex surface allows light absorption for vivid color while leaving binding sites accessible.
Solution Approach 2:
The patent uses the inherent color properties of metals (gold, silver, copper) to achieve vivid coloration without requiring organic dyes. The metal particles copy the light-absorbing function of dyes but with superior color intensity and without the side effect of surface coverage that impedes binding.
3Measurement precision
If an antibody labeled with resin-metal composite is used for immunological measurement, then detection sensitivity should increase, but the resin-metal composite aggregates, leading to poor handling properties and reduced detection sensitivity
Solution Approach 1:
The patent localizes metal particles to the surface layer of the latex particle rather than distributing them throughout the entire particle volume. This surface localization prevents aggregation by reducing metal-metal interactions while maintaining detection sensitivity through sufficient surface metal coverage for light absorption and plasmon resonance effects.
Solution Approach 2:
The patent utilizes the porous or heterogeneous surface structure of the latex particle to disperse metal particles in a way that prevents aggregation. The surface topology provides separation between metal particles while maintaining their functional density for detection purposes.
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 resin-platinum composite exhibits excellent dispersibility, durability, and visibility, enabling high-sensitivity determination in immunological measurements without the need for special devices or complex operations.
Implementation Method 1
detection sensitivity is amplified... platinum particles are fixed to the resin particle... at least some of the platinum particles are distributed three-dimensionally on a surface layer section of the resin particle
Data Source
Figure 1~2B
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AI summary
This resin-platinum composite (100) is provided with resin particles (10) and platinum particles (20), and the platinum particles (20) are immobilized on the resin particles (10). In the resin-platinum composite (100), one portion of the platinum particles (20) may be distributed three-dimensionally on surface layer sections (60) of the resin particles (10). In this case, the one portion of the three-dimensionally distributed platinum particles (20) may be partially exposed outside the resin particles (10), and the remaining portion may be enclosed in the resin particles (10). In the platinum particles (20), enclosed particles (30) that are fully enclosed in the resin particles (10), partially exposed particles (40) each having a segment embedded inside the resin particles (10) and a segment exposed outside the resin particles (10), and surface attached particles (50) attached to the surfaces of the resin particles (10) preferably exist.