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Synthesis of linked carbon monolayers: Films, balloons, tubes, and pleated sheets

2008; National Academy of Sciences; Volume: 105; Issue: 21 Linguagem: Inglês

10.1073/pnas.0710081105

1091-6490

Mitchell J. Schultz, Xiaoyu Zhang, Sakulsuk Unarunotai, Dahl‐Young Khang, Qing Cao, Congjun Wang, Changhui Lei, Scott MacLaren, Julio A. N. T. Soares, I. Petrov, Jeffrey S. Moore, John A. Rogers,

Molecular Junctions and Nanostructures

Because of their potential for use in advanced electronic, nanomechanical, and other applications, large two-dimensional, carbon-rich networks have become an important target to the scientific community. Current methods for the synthesis of these materials have many limitations including lack of molecular-level control and poor diversity. Here, we present a method for the synthesis of two-dimensional carbon nanomaterials synthesized by Mo- and Cu-catalyzed cross-linking of alkyne-containing self-assembled monolayers on SiO(2) and Si(3)N(4). When deposited and cross-linked on flat surfaces, spheres, cylinders, or textured substrates, monolayers take the form of these templates and retain their structure on template removal. These nanomaterials can also be transferred from surface to surface and suspended over cavities without tearing. This approach to the synthesis of monolayer carbon networks greatly expands the chemistry, morphology, and size of carbon films accessible for analysis and device applications.