Reply to “Comment on ‘Bottom-Up Graphene-Nanoribbon Fabrication Reveals Chiral Edges and Enantioselectivity’”

Han, Patrick; Akagi, Kazuto; Canova, Filippo Federici; Mutoh, Hirotaka; Shiraki, Susumu; Iwaya, Katsuya; Weiss, Paul S.; Asao, Naoki; Hitosugi, Taro

doi:10.1021/acsnano.5b01687

Cited by 19 publications

(33 citation statements)

References 5 publications

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“…To fabricate and to connect precise (3,1)-GNRs, we use the two-step thermally induced SAMA of 10,10 0dibromo-9,9 0 -bianthryl precursor monomers (DBPMs) on Cu{111} (Figure 1a), 7,8 exploiting both the strong interaction of Cu{111} with aromatic structures 33 to direct DBPM alignment and the stability of the CÀBr bond to prevent unwanted reactions along GNR edges. As the scheme in Figure 1a depicts, this process involves the formation of DBPM molecular chains from DBPM molecular islands (1), followed by polymerization of the molecular chains (2).…”

Section: Resultsmentioning

confidence: 99%

Self-Assembly Strategy for Fabricating Connected Graphene Nanoribbons

et al. 2015

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We use self-assembly to fabricate and to connect precise graphene nanoribbons end to end. Combining scanning tunneling microscopy, Raman spectroscopy, and density functional theory, we characterize the chemical and electronic aspects of the interconnections between ribbons. We demonstrate how the substrate effects of our self-assembly can be exploited to fabricate graphene structures connected to desired electrodes.

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Section: Resultsmentioning

confidence: 99%

Self-Assembly Strategy for Fabricating Connected Graphene Nanoribbons

et al. 2015

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“…Note that two different types of GNRs have been reported to form on Cu(111) from the DBBA precursor, 7-AGNR [17], and (3,1)-GNR [15]. Details have been discussed in the literature [15,17,[22][23][24][25][26][27]. The difference between these two types of GNRs is barely traceable in XPS, because both nanoribbons have the same ratio of the edge carbon atoms and the backbone carbon atoms (C2/C1) (cf.…”

Section: Methodsmentioning

confidence: 99%

Dependence of the adsorption height of graphenelike adsorbates on their dimensionality

et al. 2018

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Comparing the adsorption heights of various graphene nanoribbons on Cu(111) and Au(111) surfaces to those of graphene and π-conjugated planar organic molecules, we observe that two-dimensional graphene adsorbs much further away from the surface than both one-dimensional graphene nanoribbons and π-conjugated planar molecules-which represent zero-dimensional graphene flakes. We show that this is a direct consequence of the adsorbates' dimensionality. Our results provide invaluable insights into the interplay of Pauli repulsion, pushback effect, and chemical interaction for graphenelike adsorbates of any dimensionality on metal surfaces.

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“…These opportunities were demonstrated with an extensive study carried out on two molecular building blocks, i.e., 10,10′-dibromo-9,9′-bianthracene (DBBA). The debate concerning the molecular arrangement of DBBA on Cu(111) is a long-standing issue [105,107,108,122,123] and by using noncontact atomic force microscopy (nc-AFM), the controversy could be definitely solved. In the specific case of DBBA and despites the presence of bromine atoms, the Ullmann reaction proved to be ineffective on Cu(111) substrates to couple the molecular tectons and GNRs resulting from another coupling mode could be detected on the surface.…”

Section: Coupling Modes Used For the Design Of 1d Macromolecular Omentioning

confidence: 99%

Recent Advances of Hierarchical and Sequential Growth of Macromolecular Organic Structures on Surface

Pigot

Dumur

2019

Materials

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The fabrication of macromolecular organic structures on surfaces is one major concern in materials science. Nanoribbons, linear polymers, and porous nanostructures have gained a lot of interest due to their possible applications ranging from nanotemplates, catalysis, optoelectronics, sensors, or data storage. During decades, supramolecular chemistry has constituted an unavoidable approach for the design of well-organized structures on surfaces displaying a long-range order. Following these initial works, an important milestone has been established with the formation of covalent bonds between molecules. Resulting from this unprecedented approach, various nanostructures of improved thermal and chemical stability compared to those obtained by supramolecular chemistry and displaying unique and unprecedented properties have been developed. However, a major challenge exists: the growth control is very delicate and a thorough understanding of the complex mechanisms governing the on-surface chemistry is still needed. Recently, a new approach consisting in elaborating macromolecular structures by combining consecutive steps has been identified as a promising strategy to elaborate organic structures on surface. By designing precursors with a preprogrammed sequence of reactivity, a hierarchical or a sequential growth of 1D and 2D structures can be realized. In this review, the different reaction combinations used for the design of 1D and 2D structures are reported. To date, eight different sequences of reactions have been examined since 2008, evidencing the intense research activity existing in this field.

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Reply to “Comment on ‘Bottom-Up Graphene-Nanoribbon Fabrication Reveals Chiral Edges and Enantioselectivity’”

Cited by 19 publications

References 5 publications

Self-Assembly Strategy for Fabricating Connected Graphene Nanoribbons

Self-Assembly Strategy for Fabricating Connected Graphene Nanoribbons

Dependence of the adsorption height of graphenelike adsorbates on their dimensionality

Recent Advances of Hierarchical and Sequential Growth of Macromolecular Organic Structures on Surface

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