期刊
ADVANCED ELECTRONIC MATERIALS
卷 7, 期 7, 页码 -出版社
WILEY
DOI: 10.1002/aelm.202000564
关键词
2D materials; perylene bisimides; self-assembled monolayers; surface functionalization; transition metal dichalcogenides
资金
- European Union [829035, 785219]
- German Federal Ministry for Education and Research (BMBF)
- Science Foundation Ireland (SFI) [15/SIRG/3329, PI_15/IA/3131]
Non-covalent functionalization of layered 2D materials is essential for modifying and fully utilizing their properties. This study presents a facile method for selective formation of self-assembled monolayers on transition metal dichalcogenides, providing detailed information beyond traditional surface analysis techniques. The highly selective organic solution functionalization opens up a pathway for controllable, versatile functionalization of layered materials, offering great potential for passivation, tuning of properties, and applications in optics, electronics, and sensing.
Non-covalent functionalization of layered 2D materials is an essential tool to modify and fully harness their optical, electrical, and chemical properties. Herein, a facile method enabling the selective formation of self-assembled monolayers (SAMs) of perylene bisimide (PBI) on transition metal dichalcogenides (TMDs), directly on the growth substrate (on-chip), is presented. Laterally-resolved infrared atomic force microscopy (AFM-IR) and time-of-flight secondary ion mass spectrometry (TOF-SIMS) are applied as superior techniques to gain detailed information beyond traditional surface analysis techniques, such as Raman spectroscopy and AFM, on TMD/PBI structures. The highly selective functionalization conducted in organic solution on MoS2 and WSe2 opens up a pathway to controllable, versatile functionalization of layered materials, which is highly sought after for its potential in passivation, tuning of properties and applications in optics, electronics, and (bio-) sensing.
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