Paramagnetic encoding of molecules.

Area of Science:

• Molecular Engineering
• Nanotechnology
• Biophysics

Background:

• Digitalization necessitates machine-readable labels for object identification and tracking.
• Current molecular coding technologies have limitations in writing, reading, and communication.
• Molecules offer vast potential for high-density data encoding.

Purpose of the Study:

• To develop a method for encoding digital information into molecules using synthetic magnetic patterns.
• To demonstrate the feasibility of reading molecularly encoded data using nuclear magnetic resonance (NMR).
• To explore the potential of this technology for applications like drug discovery and anti-counterfeiting.

Main Methods:

• Synthetic encoding of magnetic patterns using paramagnetic lanthanide ions within molecular scaffolds.
• Utilizing the directional magnetic susceptibility tensors of lanthanides to create unique molecular magnetic signatures.
• Reading encoded data via nuclear magnetic resonance (NMR) in the radiofrequency (RF) spectrum.

Main Results:

• Demonstrated successful encoding of digital information into molecules and their mixtures.
• Achieved a unique magnetic outcome for each lanthanide sequence within a molecule.
• Presented a prototype system with 16-bit encoding capacity (65,535 unique codes).
• Showcased multiplexing capabilities leading to double-exponential growth in code capacity with ion count.

Conclusions:

• Magnetic patterns in molecules can serve as a robust platform for digital data encoding.
• NMR-based reading of molecular codes offers a viable alternative to macroscopic RF identification.
• Future systems with higher bit encoding (e.g., 64-bit) could meet extensive labelling demands in various industries.