Enhanced stability of monolayers for quantum transport applications

초록

"Recent advances in self-assembled monolayers (SAMs) have overcome longstanding stability challenges, unlocking new opportunities for molecular-scale devices in quantum transport applications. This review highlights key developments focused on enhancing the electrical and thermal robustness of SAMs. The Repeated Surface Exchange of Molecules (ReSEM) method significantly improves breakdown voltages by mixing two molecular species to reduce packing defects and nanoscale pinholes, enabling access to deeper molecular orbital energy levels. Additionally, N-heterocyclic carbene (NHC) anchor groups deliver exceptional thermal stability, sustaining consistent thermoelectric performance at temperatures up to 573 K. These breakthroughs expand the functional versatility of SAM-based molecular junctions, paving the way for their integration into practical electronic, thermoelectric, and sensing technologies. © 2025 Elsevier B.V.

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