![]() These properties are often strongly modified by defects 2, 3, 4, 5, 6, which are inevitable in the growth process. Two-dimensional (2D) transition metal dichalcogenides (TMDs) have great potential for future device applications due to their novel electronic and optical properties 1. Our results demonstrate the site-dependent electronic and chemical properties of MoSe 2 monolayers, which can be exploited as a natural template to create ordered nanostructures. First-principles calculations reveal that the active MTBs couple with amino groups in the DAP molecules facilitating the DAP assembly. This site-specific molecular self-assembly is attributed to the more chemically reactive metallic MTBs compared to the pristine semiconducting MoSe 2 domains. In this work, we demonstrate the self-assembly of 2,3-diaminophenazine (DAP) molecule porous structure with alternate L-type and T-type aggregated configurations on the MoSe 2 hexagonal wagon-wheel pattern surface. In particular, mirror twin boundaries (MTBs) on transition metal dichacogenides have attracted much interest due to their metallic state with charge density wave transition and spin-charge separation property. ![]() The control of the density and type of line defects on two-dimensional (2D) materials enable the development of new methods to tailor their physical and chemical properties. ![]()
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