The conductivity of graphite oxide films is modulated using reducing agents. It is found that the sheet resistance of graphite oxide film reduced using sodium borohydride (NaBH4) is much lower than that of films reduced using hydrazine (N2H4). This is attributed to the formation of CN groups in the N2H4 case, which may act as donors compensating the hole carriers in reduced graphite oxide. In the case of NaBH4 reduction, the interlayer distance is first slightly expanded by the formation of intermediate boron oxide complexes and then contracted by the gradual removal of carbonyl and hydroxyl groups along with the boron oxide complexes. The fabricated conducting film comprising a NaBH4-reduced graphite oxide reveals a sheet resistance comparable to that of dispersed graphene.

Efficient Reduction of Graphite Oxide by Sodium Borohydride and Its Effect on Electrical Conductance

Transition-metal catalyzed decomposition of aliphatic diazo compounds — New results and applications in organic synthesis

A Perspective on Continuous Flow Chemistry in the Pharmaceutical Industry

The readily accessible α-diazo carbonyl compounds are distinguished by their high reactivity, which opens up a variety of preparative applications under modified conditions. Wolff rearrangements of these compounds, induced thermally, photochemically, or catalytically, afford ketenes. Free and complexed carbenes, 1,3-dipoles, 1,3-diradicals, and the antiaromatic oxirenes have been considered as intermediates or transition states. The present progress report attempts to integrate preparative and theoretical aspects.

The Wolff Rearrangement of α-Diazo Carbonyl Compounds

Organocatalytic Enamide–Azide Cycloaddition Reactions: Regiospecific Synthesis of 1,4,5‐Trisubstituted‐1,2,3‐Triazoles

Chemischen Institut der Universität Jena: Methode zum Ersatz des Sauerstoffatoms der Ketone und Aldehyde durch Wasserstoff. [Erste Abhandlung.]

Über Diazoanhydride (1,2,3-Oxydiazole oder Diazoxyde) und Diazoketone

Ueber einige Abkömmlinge der Lävulinsäure

Condensationsproducte der Tetronsäure

Ueber β-Bromlävulinsäure

Ludwig Wolff

Papers

Chemischen Institut der Universität Jena: Methode zum Ersatz des Sauerstoffatoms der Ketone und Aldehyde durch Wasserstoff. [Erste Abhandlung.]

Über Diazoanhydride (1,2,3-Oxydiazole oder Diazoxyde) und Diazoketone

Ueber einige Abkömmlinge der Lävulinsäure

Condensationsproducte der Tetronsäure

Ueber β-Bromlävulinsäure