Functional 2D Germanene Fluorescent Coating of Microrobots for Micromachines Multiplexing

Area of Science:

• Materials Science
• Nanotechnology
• Chemical Engineering

Background:

• Micromachines are autonomous systems crucial for intelligent matter applications.
• Tracking individual micromachines, especially those carrying molecular cargo, remains a significant challenge in the field.
• Current methods lack the specificity for differentiating multiple micromachines simultaneously.

Purpose of the Study:

• To develop novel fluorescent markers for distinguishing individual micromachines within a population.
• To enable multiplex detection and tracking of functionalized micromachines.
• To demonstrate the utility of these markers in a drug delivery system.

Main Methods:

• Synthesis of two distinct 2D germanene derivatives: 4-fluorophenylgermanane (2D-Ph-Ge) and methylgermanane (2D-Me-Ge).
• Characterization of their fluorescent properties under UV light irradiation (365 nm excitation).
• Application of the fluorescently labeled germanene derivatives to distinguish drug-carrying micromachines from bare ones in a mixture.

Main Results:

• The developed 2D germanene derivatives exhibit distinct fluorescence under UV irradiation.
• 2D-Ph-Ge shows blue emission, while 2D-Me-Ge shows red emission, allowing clear differentiation.
• Successful demonstration of multiplex labeling for a drug delivery system, distinguishing drug-loaded from bare micromachines.

Conclusions:

• Chemically modified 2D germanene compounds serve as highly stable and effective fluorescent markers.
• This novel approach enables multiplex detection and identification of functionalized micromachines in complex settings.
• The functional fluorescent labeling strategy opens new avenues for advanced autonomous systems and intelligent matter research.