Emergent Behaviors in Kinetically Controlled Dynamic Self-Assembly of Synthetic Molecular Systems

Area of Science:

• Supramolecular Chemistry
• Synthetic Biology
• Materials Science

Background:

• Living systems exhibit complex, kinetically controlled functions, unlike simpler synthetic systems governed by thermodynamics.
• Understanding the differences between biological and synthetic systems requires novel approaches.

Purpose of the Study:

• To design and investigate a synthetic molecular system capable of kinetically controlled self-assembly.
• To explore emergent behaviors and complex functions in synthetic systems.

Main Methods:

• Conjugation of an amino acid with naphthalenediimide and pyrene to form a three-component molecular system (triad).
• Characterization of three distinct molecular aggregation states (State I, State II, State III) and their dynamic transformations.
• Utilizing stereochemical information of the amino acid in self-assembled states.

Main Results:

• Demonstrated kinetically controlled self-assembly of triads into three distinct states.
• Reported emergent behaviors: "supramolecular speciation" and "supramolecular regulation".
• Discovered a novel emergent property, "super-nonlinearity", in a majority-rules experiment.

Conclusions:

• Synthetic triads exhibit complex emergent behaviors through interplay of molecular interactions.
• These findings offer insights into creating synthetic systems with unprecedented functions.
• The study has potential relevance for understanding prebiotic chemical evolution.