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Triazine-Based Sequence-Defined Polymers with Side-Chain Diversity and Backbone-Backbone Interaction Motifs.

Jay W Grate1, Kai-For Mo2, Michael D Daily2

  • 1Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA, 99352, USA. jwgrate@pnnl.gov.

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|February 12, 2016
PubMed
Summary

Researchers developed a new polymer architecture, cyanuric chloride-based sequence-defined polymers (TZPs), mimicking natural sequence control. These TZPs exhibit backbone-backbone interactions and offer diverse side chains for novel macromolecular materials.

Keywords:
biomimeticsmacromoleculessequence-defined polymerssimulationssolid-phase synthesis

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Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Organic Synthesis

Background:

  • Nature utilizes sequence control in polymers to encode structure and function, particularly in biomolecules like peptides.
  • Existing synthetic sequence-defined polymers often rely on peptide bond chemistry, limiting structural diversity and backbone interactions.

Purpose of the Study:

  • To introduce a novel polymer architecture for creating sequence-defined polymers (TZPs) using cyanuric chloride chemistry.
  • To demonstrate the synthesis of TZPs with diverse side chains and investigate their structural properties.
  • To explore the potential of TZPs for developing new functional macromolecules and materials.

Main Methods:

  • Nucleophilic aromatic substitution chemistry of cyanuric chloride was employed for polymer synthesis.
  • Two hexameric TZPs, featuring neutral and ionizable side chains, were synthesized.
  • Molecular dynamics simulations were utilized to analyze backbone-backbone interactions.

Main Results:

  • Successful synthesis of sequence-defined hexamers (TZPs) with distinct side chain functionalities.
  • Molecular dynamics simulations revealed significant backbone-backbone interactions, including hydrogen bonding and pi-pi stacking.
  • The synthetic approach allows for structural diversity comparable to peptides.

Conclusions:

  • A new biomimetic polymer architecture, TZPs, has been established using cyanuric chloride chemistry.
  • TZPs exhibit inherent backbone-backbone interactions, contributing to their structural integrity and potential functionality.
  • This versatile synthetic platform enables the creation of advanced macromolecules and materials with tailored properties.