A two-ring interlocked DNA catenane rotor undergoing switchable transitions across three states

Area of Science:

• Supramolecular Chemistry
• DNA Nanotechnology
• Molecular Machines

Background:

• Interlocked DNA structures offer unique topological properties for molecular assembly.
• Designing switchable molecular systems is crucial for developing advanced nanodevices.

Purpose of the Study:

• To describe a novel two-ring (α/β) interlocked DNA catenane rotor system.
• To demonstrate triggered, switchable rotation of the α-ring along its circular track.

Main Methods:

• Construction of a two-ring (α/β) DNA catenane architecture.
• Utilizing specific fuel and anti-fuel DNA strands to control molecular switching.
• Characterization of rotational states (S1, S2, S3) of the α-ring.

Main Results:

• Successful synthesis of the (α/β) interlocked DNA catenane rotor.
• Demonstration of triggered, switchable rotation of the α-ring.
• Confirmation of three distinct rotational states (S1, S2, S3) controlled by DNA strands.

Conclusions:

• The described DNA catenane system represents a functional molecular rotor.
• This work highlights the potential of DNA nanotechnology for creating controllable molecular machines.