Multifunctional Applications Enabled by Fluorination of Hexagonal Boron Nitride

Abstract: 2D materials exhibit exceptional properties as compared to their macroscopic counterparts, with promising applications in nearly every area of science and technology. To unlock further functionality, the chemical functionalization of 2D structures is a powerful technique that enables tunability and new properties within these materials. Here, the successful effort to chemically functionalize hexagonal boron nitride (hBN), a chemically inert 2D ceramic with weak interlayer forces, using a gas‐phase fluorination process is exploited. The fluorine functionalization guides interlayer expansion and increased polar surface charges on the hBN sheets resulting in a number of vastly improved applications. Specifically, the F‐hBN exhibits enhanced dispersibility and thermal conductivity at higher temperatures by more than 75% offering exceptional performance as a thermofluid additive. Dispersion of low volumes of F‐hBN in lubricating oils also offers marked improvements in lubrication and wear resistance for steel tribological contacts decreasing friction by 31% and wear by 71%. Additionally, incorporating numerous negatively charged fluorine atoms on hBN induces a permanent dipole moment, demonstrating its applicability in microelectronic device applications. The findings suggest that anchoring chemical functionalities to hBN moieties improves a variety of properties for h‐BN, making it suitable for numerous other applications such as fillers or reinforcement agents and developing high‐performance composite structures.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Multifunctional Applications Enabled by Fluorination of Hexagonal Boron Nitride ; day:21 ; month:05 ; year:2024 ; extent:11 ; Small ; (21.05.2024) (gesamt 11)

Contributors, Places and Time

• Creator: Salpekar, Devashish ; Serles, Peter ; Colas, Guillaume ; Ma, Li ; Yadav, Shwetank ; Hamidinejad, Mahdi ; Khabashesku, Valery N. ; Gao, Guanhui ; Swaminathan, Venkataraman ; Vajtai, Robert ; Singh, Chandra Veer ; Park, Chul ; Filleter, Tobin ; Meiyazhagan, AshokKumar ; Ajayan, Pulickel M.

Further information

• DOI: 10.1002/smll.202311836
• URN: urn:nbn:de:101:1-2405221405238.797355774277
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 10:46 AM CEST