Branched Macromonomer Synthesis for Scalable Multi-Cargo Polymers
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Solution Overview
Problem
Existing synthetic protocols for generating branched macromonomers, such as Generation 1 macromonomers (G1-M), are inefficient, non-trivial, and difficult to scale up, limiting their widespread use and the development of polymers with multiple functional sites.
Innovation Solution
A convergent route is developed for synthesizing Generation 2 branched macromonomers (G2-M) with a simple and scalable chemistry, achieving a higher yield and minimal purification, retaining core functions like ring-opening metathesis polymerizable norbornene groups and orthogonal functional groups, enabling efficient polymerization into star polymeric nanoparticles and block copolymers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional linear synthetic protocols are used for Generation 1 macromonomers, then the synthesis can be performed with existing methods, but the process requires non-trivial reaction conditions and purifications, and cannot be efficiently scaled up
Solution Approach 1:
The synthesis is divided into modular segments: first synthesizing the norbornene-containing core, then separately preparing side chains with desired functional groups, and finally coupling them together. This segmentation allows each module to be optimized independently and facilitates scalable production by enabling parallel synthesis of different components.
Solution Approach 2:
The patent prepares all necessary components (norbornene core, side chains, functional groups) before final assembly. This preliminary action includes pre-functionalizing side chains with therapeutic agents, diagnostic agents, or other cargo, and pre-synthesizing the norbornene core structure, thereby simplifying the final polymerization step and enabling efficient scaling.
2Adaptability or versatility
If complex macromonomers containing multifunctional platforms or multiple agents are synthesized, then the polymers can have multiple functions and properties, but the synthetic protocols become more complex and difficult to scale up
Solution Approach 1:
The patent designs a universal norbornene-containing core structure that can serve as a platform for attaching various types of side chains with different functions. This universal core maintains consistent polymerization behavior while allowing versatile functional customization through different side chain attachments, including therapeutic agents, diagnostic agents, and self-assembling blocks.
Solution Approach 2:
Complex multifunctional macromonomers are constructed by segmenting them into distinct functional modules: the norbornene core, side chains with specific functions, and cargo-bearing groups. Each segment can be synthesized and characterized independently, then coupled together through well-established chemistry, thereby managing complexity through modularity.
3Quantity of substance
If large amounts of core monomers are required for material development and bulk property investigation, then sufficient material can be obtained for comprehensive studies, but the existing synthetic methods are inefficient and require extensive purification
Solution Approach 1:
The patent performs preliminary synthesis of the norbornene core and side chains using high-yielding reactions with minimal purification requirements. By preparing components in advance with high purity through optimized reaction conditions, the method enables scalable production of large quantities of macromonomers without extensive purification steps that would reduce productivity.
Solution Approach 2:
The patent optimizes reaction parameters including temperature, solvent selection, catalyst loading, and reaction time to maximize yield and minimize purification needs. These parameter changes enable the synthesis to be performed efficiently at scale, producing large quantities of macromonomers with high purity directly from the reaction mixture.
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 new synthetic method allows for the production of macromonomers and polymers with higher cargo loading of therapeutic, diagnostic, and prophylactic agents, facilitating more effective materials for drug delivery and molecular imaging.
Implementation Method 1
Graft-through ring-opening metathesis polymerization (ROMP) offers distinct advantages over other bottlebrush synthesis methods
Implementation Method 2
an alkyne, for which copper (1)-catalyzed alkyne-azide cycloaddition (CuAAC) can be applied
Implementation Method 3
a carboxylic acid group, compatible with carbodiimide coupling chemistry
Data Source
AI summary
Disclosed are methods, compositions, reagents, systems, and kits to prepare and utilize branched multi-functional macromonomers, which contain a ring-opening metathesis polymerizable norbornene group, one or more reactive sites capable of undergoing click chemistry, and a terminal acyl group capable of undergoing a coupling reaction; branched multi-cargo macromonomers; and the corresponding polymers are disclosed herein. Various embodiments show that the macromonomers and polymers disclosed herein display unprecedented control of cargo loading of agents. These materials have the potential to be utilized for the treatment of diseases and conditions such as cancer and hypertension.