Dendritic Mesoporous Nanoparticles via One-Pot Surfactant-Free Synthesis
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Solution Overview
Problem
Current methods for synthesizing heterotrimeric nanoparticles require sequential growth on seed particles and surfactants, making it challenging to control their structure and properties, especially for biological applications where cellular uptake is influenced by symmetry and surface morphology.
Innovation Solution
A one-pot, surfactant-free method for forming dendritic mesoporous nanoparticles by mixing polymer precursors, silica precursors, and a compound that enhances interaction between silica and polymer, allowing for the formation of symmetrical or asymmetric nanoparticles without seed particles, enabling control over their structure and cellular uptake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sequential growth on seed particles is used to synthesize heterotrimeric nanoparticles, then the structure and properties can be controlled, but the process complexity increases and requires multiple steps
Solution Approach 1:
The patent combines multiple growth steps into a single one-pot synthesis process where all three nanoparticulate components grow simultaneously from common precursors in the presence of a template, eliminating the need for sequential assembly on seed particles while maintaining structural control
Solution Approach 2:
The template is introduced beforehand to pre-organize the precursor molecules and guide the simultaneous formation of all three components, enabling structure control without requiring sequential growth steps
2Ease of manufacture
If surfactants are used in the synthesis process, then the nanoparticle formation is facilitated, but the purity and biocompatibility decrease due to residual surfactant contamination
Solution Approach 1:
The patent removes surfactants entirely from the synthesis system, replacing them with a template that can be easily removed or is biocompatible, thereby achieving nanoparticle formation without contamination while improving purity and biocompatibility
Solution Approach 2:
The template serves as a temporary guiding structure that facilitates nanoparticle formation during synthesis but is not required in the final product, allowing it to be removed or degraded without affecting the final nanoparticle purity
3Adaptability or versatility
If asymmetric nanoparticles are synthesized, then the cellular uptake may be enhanced for certain cell types, but the synthesis control and reproducibility become more difficult
Solution Approach 1:
The patent enables controlled formation of asymmetric heterotrimeric nanoparticles with specific arrangements of different components by adjusting precursor ratios and reaction conditions, achieving both desired asymmetry for cellular uptake and reproducibility through systematic parameter control
Solution Approach 2:
The patent achieves different nanoparticle symmetries and morphologies by systematically varying synthesis parameters such as precursor concentrations, pH, temperature, and template type, allowing control over both asymmetry and reproducibility
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
This method produces dendritic mesoporous nanoparticles with controlled symmetry and morphology, enhancing their cellular uptake efficiency depending on the cell type's phagocytic capacity, and allows for scalable production of both silica and carbon nanoparticles.
Implementation Method 1
a compound that reacts with silica and reacts with the polymer or oligomer formed from the one or more polymer precursors
Implementation Method 2
polymer precursors, a silica precursor, and a compound that reacts with silica and reacts with the polymer or oligomer formed from the one or more polymer precursors
Implementation Method 3
stirring the mixture whereby nanoparticles are formed, and subsequently treating the nanoparticles to form dendritic mesoporous silica nanoparticles or dendritic mesoporous carbon nanoparticles
Data Source
AI summary
A method for forming dendritic mesoporous nanoparticles comprising preparing a mixture containing one or more polymer precursors, a silica precursor, and a compound that reacts with silica and reacts with the polymer or oligomer formed from the one or more polymer precursors, and stirring the mixture whereby nanoparticles are formed, and subsequently treating the nanoparticles to form dendritic mesoporous silica nanoparticles or dendritic mesoporous carbon nanoparticles. The silica precursor may comprise tetraethyl orthosilicate (TEOS), the one or more polymer precursors may comprise 3-aminophenol and formaldehyde and the compound may be ethylene diamine (EDA). There is a window of amount of EDA present that will result in asymmetric particles being formed. If a greater amount of EDA is present, symmetrical particles will be formed.