Biodegradable Conductive Polymers for Dual-Modal Imaging
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Solution Overview
Problem
Current biomedical imaging techniques face limitations in combining photoacoustic and fluorescent dual imaging modalities, lacking suitable biodegradable conducting polymers for comprehensive diagnosis and treatment applications.
Innovation Solution
Development of citrate-based elastic biodegradable photoluminescent polymers (BPLPs) combined with aniline tetramer (AT) to create biodegradable dual-modal photoacoustic/fluorescent imaging compounds (BPLPATs), offering electrical conductivity, tunable mechanical properties, and dual imaging capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If biodegradable conducting polymers are used for photoacoustic imaging, then deep penetration depth and high contrast are achieved, but the ability to combine with fluorescent imaging modalities is limited
Solution Approach 1:
The patent combines photoacoustic and fluorescent imaging capabilities into a single biodegradable conducting polymer system. The polymer simultaneously exhibits both photoacoustic contrast (through strong optical absorption in NIR region) and fluorescent properties (through incorporated fluorophores), enabling dual-modality imaging without requiring separate agents or systems.
Solution Approach 2:
The biodegradable conducting polymer is designed to perform multiple functions: it serves as both a photoacoustic contrast agent and a fluorescent imaging agent, while also maintaining electrical conductivity and biodegradability. This multi-functional design allows a single material to replace what would traditionally require multiple separate agents.
2Reliability
If conducting polymers are used to provide electrical conductivity and optical absorption, then photoacoustic signal generation is improved, but biodegradability and biocompatibility are compromised
Solution Approach 1:
The patent changes the chemical composition and structural parameters of the conducting polymer to incorporate biodegradable elements. By adjusting the polymer backbone structure, molecular weight, and degradation kinetics, the material achieves both strong photoacoustic signal generation and controlled biodegradability, transforming it from a potentially harmful permanent material to a biocompatible temporary agent.
Solution Approach 2:
The patent creates a composite conducting polymer system that integrates conductive segments with biodegradable segments. This composite structure allows the material to exhibit both the desired electrical conductivity and optical absorption for photoacoustic imaging, while the biodegradable components ensure safe breakdown and elimination from the body, improving overall biocompatibility.
3Device complexity
If single-modality imaging techniques are used, then simplicity and cost-effectiveness are maintained, but comprehensive diagnostic information is limited
Solution Approach 1:
The biodegradable conducting polymer serves as a universal imaging agent that enables both photoacoustic and fluorescent imaging modalities simultaneously. This allows comprehensive diagnostic information to be obtained without requiring multiple separate imaging agents or complex multi-device systems, as the single polymer material is compatible with both imaging techniques.
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
BPLPATs enable precise and efficient dual-modal imaging, promoting nerve cell proliferation, differentiation, and potential applications in tissue engineering, drug delivery, and biosensing with improved biocompatibility and imaging depth.
Implementation Method 1
photoacoustic (PA) imaging, which is based on the absorption of optical energy to generate acoustic signals
Implementation Method 2
Fluorescence imaging is another technique that has been shown to produce good outcomes in biomedical studies
Data Source
AI summary
A compound comprising an oligomer formed from a biocompatible multifunctional carboxylic acid comprising a hydroxyl group and at least one carboxylic acid, an polyol (e.g., an aliphatic diol), and a linker. One or more conductive oligomers (e.g., polyanilines) are covalently bonded to the oligomer. The compounds can have various forms (e.g., articles of manufacture, films, scaffolds, and the like). The compounds have various uses. For example, the compounds are used in photoacoustic imaging methods.