A programmable modular robot for the synthesis of molecular machines

Area of Science:

• Nanotechnology
• Molecular Engineering
• Chemical Synthesis

Background:

• Current nanomachine assembly is labor-intensive, limiting advancements in nanotechnology.
• A digital control system is needed to unify molecular nanotechnology and macroscale chemical processes.

Purpose of the Study:

• To present a universal chemical robotic synthesis platform (Chemputer) for autonomous production of functional molecular machines.
• To demonstrate the integration of autonomous feedback for synthesis and purification processes.

Main Methods:

• Utilized a robotic platform for a divergent four-step synthesis of molecular rotaxane architectures.
• Integrated on-line Nuclear Magnetic Resonance (NMR) for yield determination.
• Employed multiple column chromatography techniques (silica gel and size exclusion) for automated purification.

Main Results:

• Achieved autonomous synthesis and purification of molecular rotaxane architectures.
• The synthetic sequence averaged 800 base steps over 60 hours.
• Successfully addressed bottlenecks in autonomous synthesis, including yield determination and product purification.

Conclusions:

• The Chemputer platform enables autonomous manufacturing of molecular nanomachines.
• This system enhances reliability and reproducibility in complex molecular synthesis.
• The developed workflow paves the way for scalable nanotechnology production.