Layered graphitic materials from a molecular precursor

Abstract

A layered graphitic material was prepared from an alkyne-containing, reactive molecular precursor at low temperature without catalyst. The resulting nanomaterial is made of stacks of a few partially graphitized nanosheets and is soluble in common organic solvents in which it exhibits green fluorescence.

Synthesis of Graphene Nanoribbons via the Topochemical Polymerization and Subsequent Aromatization of a Diacetylene Precursor

“…[27][28][29] Despite the large number of previous reports on diaryl-substituted PDAs, literature on their cyclization and aromatization is nonexistent to the best of our knowledge. 30,31 Since naphthalene is less stabilized by aromaticity than benzene, and therefore more reactive, we chose to synthesize dinaphthylbutadiyne-based monomers, which should have a higher propensity for graphitization reactions. 32 For the topochemical polymerization of butadiynes to be feasible under mild conditions, several factors must be satisfied in the crystalline state.…”

Emerging Bottom‐Up Strategies for the Synthesis of Graphene Nanoribbons and Related Structures

“…In fact, afaulty assembly is likely to lead to undefined materials,limiting their use in electronic applications.I n2 014, Morin and co-workers attempted the synthesis of ac onjugated nanoribbons from as elf-assembled tris(diyne) derivative (compound 1,S cheme 1). [53] After as elf-assembly step using ax erogel strategy,t he tris(diyne) derivative was irradiated using a2 54 nm light for several hours,leading to apolydiacetylene precursor (2)asexpected. Surprisingly,the purple compound rapidly turned yellow and highly fluorescent in solution upon exposure to ambient light.…”

“…[41,42] In many cases, the sizes and shapes of the resulting materials can be controlled by the solid-state organization of the [n]ynes precursors prior to the reaction. [43][44][45][46] Thus,v arious carbonrich structures including spherical nanoparticles, [47,48] nanotubes, [49,50] nanowires [51] and nanosheets [52,53] have been prepared with relative success.T he real challenge for the preparation of well-defined carbon nanomaterials using this method is to get high fidelity in the self-assembly process prior to the polymerization. In fact, afaulty assembly is likely to lead to undefined materials,limiting their use in electronic applications.I n2 014, Morin and co-workers attempted the synthesis of ac onjugated nanoribbons from as elf-assembled tris(diyne) derivative (compound 1,S cheme 1).…”

Emerging Bottom‐Up Strategies for the Synthesis of Graphene Nanoribbons and Related Structures

“…In many cases, the sizes and shapes of the resulting materials can be controlled by the solid‐state organization of the [ n ]ynes precursors prior to the reaction . Thus, various carbon‐rich structures including spherical nanoparticles, nanotubes, nanowires and nanosheets have been prepared with relative success. The real challenge for the preparation of well‐defined carbon nanomaterials using this method is to get high fidelity in the self‐assembly process prior to the polymerization.…”