%0 Journal Article
%A Pérez-Elvira, Elena
%A Barragán, Ana
%A Gallardo, Aurelio
%A Santos Barahona, José Manuel
%A Martín-Fuentes, Cristina
%A Lauwaet, Koen
%A Gallego, José M.
%A Miranda, Rodolfo
%A Sakurai, Hidehiro
%A Urgel, José I.
%A Björk, Jonas
%A Martín León, Nazario
%A Écija, David
%T Coronene-Based 2D Networks by On-Surface Skeletal Rearrangement of Sumanene Precursors
%D 2024
%U https://hdl.handle.net/20.500.14352/120320
%X The design of novel low-dimensional carbon materials is at the forefront of modern chemistry. Recently, on-surface covalent synthesis has emerged as a powerful strategy to synthesize previously precluded compounds and polymers. Here, we report a scanning probe microscopy study, complemented by theoretical calculations, on the sequential skeletal rearrangement of sumanene-based precursors into a coronene-based organometallic network by stepwise intra- and inter-molecular reactions on Au(111). Interestingly, upon higher annealing, the formed organometallic networks evolve into two-dimensional coronene-based covalently linked patches through intermolecular homocoupling reactions. A new reaction mechanism is proposed based on the role of C−Au−C motifs to promote two stepwise carbon-carbon couplings to form cyclobutadiene bridges. Our results pave avenues for the conversion of molecular precursors on surfaces, affording the design of unexplored two-dimensional organometallic and covalent materials.
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