title: Hydroboration of graphene oxide: towards stoichiometric graphol and hydroxygraphane.
abstract: Covalently functionalized graphene materials with well-defined stoichiometric composition are of a very high importance in the research of 2D carbon material family due to their well-defined properties. Unfortunately, most of the contemporary graphene-functionalized materials do not have this kind of defined composition and, usually, the amount of heteroatoms bonded to graphene framework is in the range of 1-10 at. %. Herein, we show that by a well-established hydroboration reaction chain, which introduces -BH2 groups into the graphene oxide structure, followed by H2O2 or CF3COOH treatment as source of -OH or -H, we can obtain highly hydroxylated compounds of precisely defined composition with a general formula (C1O0.78H0.75)n, which we named graphol and highly hydroxylated graphane (C1(OH)0.51H0.14)n, respectively. These highly functionalized materials with an accurately defined composition are highly important for the field of graphene derivatives. The enhanced electrochemical performance towards important biomarkers as well as hydrogen evolution reaction is demonstrated.
authors: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore).
authors: Hwee Ling
authors: HL
authors: Poh
authors: Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6 (Czech Republic).
authors: Zdeněk
authors: Z
authors: Sofer
authors: Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6 (Czech Republic).
authors: Petr
authors: P
authors: Šimek
authors: Nuclear Physics Institute of the ASCR, Řež 130, 250 68 Řež (Czech Republic).
authors: Ivo
authors: I
authors: Tomandl
authors: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore). pumera.research@gmail.com.
authors: Martin
authors: M
authors: Pumera
keywords: boranes; electrochemistry; graphene; hydroboration; synthetic methods