Recent Progress in the Design of Monodisperse, Sequence-Defined Macromolecules

Area of Science:

• Polymer Chemistry
• Macromolecular Science
• Organic Synthesis

Background:

• Developing sequence-defined macromolecules is crucial for advanced materials.
• Iterative synthesis offers precise control over polymer architecture.
• Current methods face challenges in scalability and purity.

Purpose of the Study:

• To review and evaluate diverse synthetic strategies for sequence-defined macromolecules.
• To assess the applicability of these methods in polymer chemistry.
• To highlight key benchmarks for evaluating synthetic approaches.

Main Methods:

• The review categorizes strategies into solution phase, solid phase, and tethered approaches.
• It discusses both conjugated and non-conjugated macromolecule synthesis.
• Evaluation criteria include monomer synthesis, yields, scalability, purity, and control.

Main Results:

• Different iterative approaches enable the synthesis of linear, non-natural polymer structures.
• Solution, solid-phase, and tethered methods offer distinct advantages and limitations.
• Achievable control over side-chains, backbone, and stereochemistry varies by method.

Conclusions:

• Iterative synthesis provides a powerful route to sequence-defined macromolecules.
• The choice of method depends on desired polymer properties and scale.
• Further optimization is needed to enhance scalability and control across all approaches.