Surface-Functionalized IR Optics With Stable Probe Linkers
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Solution Overview
Problem
Existing surface-functionalized optical elements suffer from insufficient immobilization of molecular probes, leading to detachment during washing or measuring steps, which reduces their stability and functionality.
Innovation Solution
A surface-functionalized optical element with a linker construct comprising a surface attachment moiety and a spacer moiety made of poly(alkylene oxide) is used to bind molecular probes, enhancing stability and reducing detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional linkers are used to bind molecular probes to the optical element surface, then the device can be manufactured and operated, but the molecular probes detach during washing or measuring steps, reducing stability and functionality
Solution Approach 1:
The patent introduces a poly(alkylene oxide) spacer moiety as an intermediary between the surface attachment moiety and the molecular probe. This spacer acts as a mediating structure that strengthens the overall linkage, preventing detachment during washing or measuring steps while maintaining the functional integrity of the molecular probe on the optical element surface
Solution Approach 2:
The patent employs a composite linker construct comprising multiple functional components: a surface attachment moiety (for binding to the optical element), a poly(alkylene oxide) spacer moiety (for structural support and stability), and a molecular probe (for target detection). This composite structure combines the advantages of each component to achieve superior immobilization stability and extended operational lifetime
2Adaptability or versatility
If molecular probes are immobilized on the optical element surface, then biosensing functionality is achieved, but the probes detach during continuous solvent flow, reducing functionality
Solution Approach 1:
The poly(alkylene oxide) spacer moiety serves as a stabilizing intermediary that maintains the connection between the molecular probe and the optical element surface under continuous solvent flow conditions. This intermediary structure provides mechanical strength and hydrophilic characteristics that prevent probe detachment while preserving biosensing functionality
Solution Approach 2:
The patent changes the chemical and physical parameters of the linker construct by incorporating poly(alkylene oxide) units, which provide enhanced hydrophilicity, flexibility, and mechanical strength. These parameter changes enable the molecular probes to remain stably immobilized during continuous solvent flow while maintaining their biosensing capabilities
Data Source
AI summary
The invention is directed to a surface-functionalized optical element comprising an IR-transparent optical element, wherein at least a part of the surface of the IR-transparent optical element is covalently bound to a molecular probe by a linker construct. The linker construct comprises a surface attachment moiety, and a spacer moiety which comprises a poly(alkylene oxide). The invention further relates to a process for preparing said surface-functionalized optical element, to an optical biosensor comprising said surface-functionalized optical element, and to a method for detecting a target analyte which uses said surface-functionalized optical element.