Kartikey Sharma, Songwei Che, Sanjay K. Behura, Naveen K. Dandu, Anika Shinde, Anh T. Ngo and Vikas Berry*,
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η6 Organometallic Functionalization of Hexagonal Boron Nitride: Implications for Multifunctional Molecular and Nanoscale Interfaces on Electronic Applications
Hexagonal boron nitride (h-BN), renowned for its formidable attributes─tensile strength (∼100 GPa), wide bandgap (∼6 eV), high thermal conductivity (227–280 W m–1 K–1), and chemical stability─poses a challenge in functionalization due to its electronegativity variance between boron and nitrogen. In a breakthrough, we present unprecedented organometallic functionalization via chromium carbonyl vapor exposure. This approach forms a pristine η6 bond that preserves lattice planarity and interconnectivity between B- and N-centers, with the metal engaging each h-BN ring. Computational analysis validates spontaneous surface reaction (ΔG = −35.50 kcal/mol). Further, carbonyl groups seed silver nanoparticle growth, culminating in a conductive layer atop h-BN. This nondestructive, chemically versatile functionalization introduces a significant advancement in a multifunctional nanoscale interface, leveraging h-BN’s thermal and structural properties for 2D FET electronic devices and sensing applications.
期刊介绍:
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.