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Improved synthesis of graphene oxide.
An improved method for the preparation of graphene oxide (GO) is described, finding that excluding the NaNO(3), increasing the amount of KMnO(4), and performing the reaction in a 9:1 mixture of H(2)SO(4)/H(3)PO(4) improves the efficiency of the oxidation process. Expand
Longitudinal unzipping of carbon nanotubes to form graphene nanoribbons
A simple solution-based oxidative process for producing a nearly 100% yield of nanoribbon structures by lengthwise cutting and unravelling of multiwalled carbon nanotube (MWCNT) side walls is described. Expand
Conductance of a Molecular Junction
Molecules of benzene-1,4-dithiol were self-assembled onto the two facing gold electrodes of a mechanically controllable break junction to form a statically stable gold-sulfur-aryl-sulfur-gold system,Expand
Electronic Structure Control of Single-Walled Carbon Nanotube Functionalization
Diazonium reagents functionalize single-walled carbon nanotubes suspended in aqueous solution with high selectivity and enable manipulation according to electronic structure to reverse the chemistry by using a thermal treatment that restores the pristine electronic structure of the nanotube. Expand
Laser-induced porous graphene films from commercial polymers
A one-step, scalable approach for producing and patterning porous graphene films with 3-dimensional networks from commercial polymer films using a CO2 infrared laser to provide a rapid route to polymer-written electronic and energy storage devices. Expand
Nanocell logic gates for molecular computing
Genetic algorithm-based simulations of molecular device structures in a nanocell where placement and connectivity of the internal molecular switches are not specifically directed and the internal topology is generally disordered show that it is possible to use easily fabricated nanocells as logic devices by setting theinternal molecular switch states after the topological molecular assembly is complete. Expand
Stepwise Quenching of Exciton Fluorescence in Carbon Nanotubes by Single-Molecule Reactions
Single-molecule chemical reactions with individual single-walled carbon nanotubes were observed through near-infrared photoluminescence microscopy, providing highly efficient sensing of local chemical and physical perturbations. Expand
Reversible water-solubilization of single-walled carbon nanotubes by polymer wrapping
Abstract Single-walled carbon nanotubes (SWNTs) have been solubilized in water by non-covalently associating them with linear polymers, most successfully with polyvinyl pyrrolidone (PVP) andExpand
Lower-defect graphene oxide nanoribbons from multiwalled carbon nanotubes.
The new, optimized method, which introduces a second, weaker acid into the system, improves the selectivity of the oxidative unzipping presumably by in situ protection of the vicinal diols formed on the basal plane of graphene during the oxidation, and thereby prevents their overoxidation and subsequent hole generation. Expand
Room-Temperature Negative Differential Resistance in Nanoscale Molecular Junctions
Molecular devices are reported utilizing active self-assembled monolayers containing the nitroamine [2′-amino-4,4′-di(ethynylphenyl)-5′-nitro-1-benzenethiolate] or the nitro compoundExpand