Paramagnetic chlorine functionalized nitrogenated multiwall carbon nanotubes (N-MWCNTs: Cl) in biomedical application
Tapaswini Chhotaray1, Dilip Kumar Mishra2, Shivani Das1
1Department of Physics, Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan Deemed to be University, Bhubaneswar, 751 030, Odisha, India.
Scientific Reports
|July 22, 2026
Summary
Chlorine-functionalized nitrogenated multiwall carbon nanotubes (N-MWCNTs: Cl) show enhanced paramagnetic properties due to structural modifications. This research explores their potential for future biomedical applications.
Area of Science:
- Materials Science
- Nanotechnology
- Biomedical Engineering
Background:
- Nitrogenated multiwall carbon nanotubes (N-MWCNTs) are explored for advanced applications.
- Functionalization of N-MWCNTs can tune their properties for specific uses.
Purpose of the Study:
- To synthesize and characterize chlorine-functionalized N-MWCNTs (N-MWCNTs: Cl).
- To investigate the structural, electronic, and paramagnetic behavior of N-MWCNTs: Cl.
- To explore the potential of N-MWCNTs: Cl for future biomedical applications.
Main Methods:
- Synthesis of N-MWCNTs: Cl.
- Structural and electronic analysis using X-ray diffraction, electron microscopy (SEM, TEM), Raman spectroscopy, XPS, and XANES.
- Paramagnetic behavior assessment using a superconducting quantum interference device (SQUID) magnetometer.
Main Results:
- Chlorine functionalization modifies N-MWCNTs structure and electronic properties via charge transfer.
- Formation of C-Cl, N-Cl, and C-N bonds and induced sp³ hybridization alters local bonding and increases charge-carrier density.
- Enhanced paramagnetic behavior observed in N-MWCNTs: Cl.
Conclusions:
- Chlorine functionalization significantly enhances the paramagnetic nature of N-MWCNTs.
- The observed paramagnetic behavior suggests potential utility in future biomedical applications.
- N-MWCNTs: Cl represent a promising material for further development in nanomedicine.
