Molecular-Level Design of Polymeric Semiconductor Nanomotors with Multichannel Sensitive 3D Motion for Microorganism...

Area of Science:

• Materials Science
• Nanotechnology
• Photocatalysis

Background:

• High-performance photocatalysts are key for light-driven micro/nanomotors.
• Current inorganic semiconductor motors have limited visible-light absorption and motion control.
• Polymeric semiconductors offer tunable properties and molecular design potential.

Purpose of the Study:

• To introduce phenolic resins as efficient semiconductor photocatalysts for light-driven nanomotors.
• To investigate the structure-property-motion relationships in these novel nanomotors.
• To demonstrate their application in antimicrobial inactivation.

Main Methods:

• Hydrothermal synthesis of m-aminophenol-formaldehyde resin nanomotors.
• Characterization of photoelectrochemical properties and HOMO-LUMO gap.
• Evaluation of motion control under various stimuli (light, H2O2).
• Assessment of antimicrobial efficiency against Karenia mikimotoi.

Main Results:

• Phenolic resin nanomotors exhibit efficient photoelectric conversion and charge transfer.
• The benzoxazine-quinoid structure results in a low HOMO-LUMO gap (1.90 eV) and broad-spectrum absorption.
• Nanomotors demonstrate precise control over 2D and vertical motion, responding to light and H2O2.
• Superior photodynamic inactivation of Karenia mikimotoi compared to TiO2 nanoparticles.

Conclusions:

• Phenolic resins provide a novel platform for designing advanced light-driven nanomotors.
• Molecular structure significantly influences photocatalytic performance and motion behavior.
• These nanomotors show promise for applications requiring controlled motion and antimicrobial activity.