Publications by authors named "A I Sinitskii"
Monolayers of TiCT MXene and bilayer structures formed by partially overlapping monolayer flakes exhibit opposite sensing responses to a large scope of molecular analytes. When exposed to reducing analytes, monolayer MXene flakes show increased electrical conductivity, i.e.
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- Researchers are exploring how to synthesize graphene nanoribbons (GNRs) of specific shapes and sizes using specially designed fluorine-bearing molecular precursors, which are important for electronic applications.
- The study focuses on the optimal temperature needed for the deposition of a new precursor (CHFI) that leads to the formation of GNRs on gold substrates (Au(111)), revealing that lower temperatures hinder adsorption.
- Through techniques like scanning tunneling microscopy and X-ray photoelectron spectroscopy, the research explains the growth mechanisms of GNRs and sets the groundwork for creating them on nonmetallic materials in the future.
We demonstrate a family of molecular precursors based on 7,10-dibromo-triphenylenes that can selectively produce different varieties of atomically precise porous graphene nanomaterials through the use of different synthetic environments. Upon Yamamoto polymerization of these molecules in solution, the free rotations of the triphenylene units around the C-C bonds result in the formation of cyclotrimers in high yields. In contrast, in on-surface polymerization of the same molecules on Au(111) these rotations are impeded, and the coupling proceeds toward the formation of long polymer chains.
View Article and Find Full Text PDFCarbon-based quantum dots (QDs) enable flexible manipulation of electronic behavior at the nanoscale, but controlling their magnetic properties requires atomically precise structural control. While magnetism is observed in organic molecules and graphene nanoribbons (GNRs), GNR precursors enabling bottom-up fabrication of QDs with various spin ground states have not yet been reported. Here the development of a new GNR precursor that results in magnetic QD structures embedded in semiconducting GNRs is reported.
View Article and Find Full Text PDFScalable fabrication of graphene nanoribbons with narrow band gaps has been a nontrivial challenge. Here, we have developed a simple approach to access narrow band gaps using hybrid edge structures. Bottom-up liquid-phase synthesis of bent = 6/8 armchair graphene nanoribbons (AGNRs) has been achieved in high efficiency through copolymerization between an -terphenyl monomer and a naphthalene-based monomer, followed by Scholl oxidation.
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