Dangerously Seeking Linear Carbon

  title={Dangerously Seeking Linear Carbon},
  author={Ray H. Baughman},
  pages={1009 - 1110}
  • R. Baughman
  • Published 19 May 2006
  • Materials Science
  • Science
It has been problematic to produce linear carbon molecules because key reactants are highly unstable and can explode. A solid state polymerization reaction avoids this problem and allows synthesis of these elusive products. 

Facile synthesis of oligoyne amphiphiles and their rotaxanes

Carbon-rich organic compounds containing a series of conjugated triple bonds (oligoynes) are relevant synthetic targets, but an improved access to oligoynes bearing functional groups would be

Highly efficient and selective synthesis of conjugated triynes and higher oligoynes of biological and materials chemical interest via palladium-catalyzed alkynyl-alkenyl coupling.

Pd-catalyzed monoalkynylation of 1,1-dibromoenynes accompanied by dehydrobromination has provided a convergent route to conjugated tri- , tetra- , and pentaynes and both display unprecedented high efficiency and selectivity.

Carbyne: from the elusive allotrope to stable carbon atom wires

Besides graphite and diamond, the solid allotropes of carbon in sp2 and sp3 hybridization, the possible existence of a third allotrope based on the sp-carbon linear chain, the Carbyne, has stimulated

Polymerization of acetylene: polyynes, but not carbyne

The formation of polyynes via polymerization of acetylene gas and endcapping with the tris(3,5-di-t-butylphenyl)methyl moiety (Tr*, supertrityl) has been explored. The polymerization process has been

Confined linear carbon chains as a route to bulk carbyne.

The results establish a route for the bulk production of exceptionally long and stable chains composed of more than 6,000 carbon atoms, representing an elegant forerunner towards the final goal of carbyne's bulk production.

Stabilization of linear carbon structures in a solid Ag nanoparticle assembly

Linear sp carbon nanostructures are gathering interest for the physical properties of one-dimensional systems. At present, the main obstacle to the synthesis and study of these systems is their

Synthesis and Characterization of Poly(9,9-Dipropargylfluorenylene-Phenylene)

Poly(9,9-dipropargylfluorenylene-phenylene) was prepared by cross-coupling condensation, known as the Heck reaction of 9,9-dipropargylfluorene (DPF) and 1,4-diiodobenzene in high yield. The polymer

Pseudocarbynes: Charge-Stabilized Carbon Chains.

Ab initio calculations of uncapped and capped linear carbon chains and their complexes with gold clusters indicate that gold dramatically alters the electron densities of the C≡C bonds, which leads to pseudocarbynes.

Synthesis and Properties of Poly(9,9-Dipropargylfluorenylene-Biphenylene)

Poly(9,9-dipropargylfluorenylene-biphenylene) was prepared by cross-coupling condensation of 9,9-dipropargylfluorene and 4,4′-diiodobiphenyl in high yield. The polymer structure was identified by



Designed cocrystals based on the pyridine-iodoalkyne halogen bond.

In each cocrystal, the oxalamide or urea host forms one-dimensional hydrogen-bonded networks, aligning the diiodopolyyne for potential topochemical polymerization with a repeat distance matching the host repeat.

Materials science: Nanoscale control of chain polymerization

This work has succeeded in inducing and guiding chain polymerization over tiny distances, initiating and terminating linear propagation at any chosen point to a spatial precision of about 1 nm by using the probe tip of a scanning tunnelling microscope.

A Rational Approach to the Preparation of Polydipyridyldiacetylenes: An Exercise in Crystal Design

Crystals have been designed for the purpose of carrying out the topochemical polymerization of two isomeric dipyridyldiacetylenes, 1,4-di(pyrdin-3-yl)buta-1,3-diyne (3-pda) and

Carbon nanowire made of a long linear carbon chain inserted inside a multiwalled carbon nanotube.

A new type of one-dimensional carbon structure, carbon nanowires (CNWs), was discovered in the cathode deposits prepared by hydrogen arc discharge evaporation of carbon rods, and has potential applications in nanoelectronics, nanomechanics, and nanomaterials.

Novel polydiacetylenes for optical materials: beyond the conventional polydiacetylenes

Polydiacetylenes (PDAs) are of great interest due to their π-conjugated backbone related properties, such as linear and nonlinear optical properties. As a consequence, design and preparation of PDAs

Preparation of Poly(diiododiacetylene), an Ordered Conjugated Polymer of Carbon and Iodine

By using a co-crystal scaffolding, this work has prepared poly(diiododiacetylene), or PIDA, a nearly unadorned carbon chain substituted with only single-atom iodine side groups, which is applicable to conjugated organic polymers.

Dangerously Seeking Linear Carbon

  • 2006