Pyrrole-Modified Two-Dimensional Carbon Nitride Nanoparticles Realize Super-Resolution Imaging.

Area of Science:

• Materials Science
• Biotechnology
• Optoelectronics

Background:

• Graphitic carbon nitride (g-C3N4) is a promising optoelectronic material for bioimaging.
• However, its large size, poor water solubility, and modification difficulties limit its direct application.
• There is a need for improved g-C3N4-based materials for biological applications.

Purpose of the Study:

• To develop an efficient modification scheme for g-C3N4 to enhance its suitability for bioimaging.
• To create water-soluble fluorescent probes from modified g-C3N4.
• To demonstrate the application of these probes in super-resolution imaging of cellular structures.

Main Methods:

• Modification of g-C3N4 using pyrrole as a reagent.
• Enhancement of fluorescence intensity and introduction of fluorescence scintillation properties.
• Transformation of modified g-C3N4 into water-soluble fluorescent probes via nanoprecipitation.
• Utilizing specific antibodies for targeted imaging.

Main Results:

• Achieved size refinement and improved water solubility of g-C3N4.
• Enhanced fluorescence intensity and introduced fluorescence scintillation properties.
• Successfully performed super-resolution imaging of cell microtubule structures with a resolution of up to 180 nm.

Conclusions:

• The proposed modification scheme effectively overcomes the limitations of applying 2D materials like g-C3N4 in biological applications.
• Developed water-soluble fluorescent probes derived from modified g-C3N4.
• This approach offers a new strategy for creating small-sized, soluble fluorescent probes from other 2D materials for advanced bioimaging.