Chemically modified graphene (CMG) nanoplatelets have shown great promise in various applications due to their electrical properties and high surface area. Chemical doping is one of the most effective methods to tune the electronic properties of graphene materials. In this work, novel B-doped nanoplatelets (borane-reduced graphene oxide, B-rG-O) were produced on a large scale via the reduction of graphene oxide by a borane-tetrahydrofuran adduct under reflux, and their use for supercapacitor electrodes was studied. This is the first report on the production of B-doped graphene nanoplatelets from a solution process and on the use of B-doped graphene materials in supercapacitors. The B-rG-O had a high specific surface area of 466 m(2)/g and showed excellent supercapacitor performance including a high specific capacitance of 200 F/g in aqueous electrolyte as well as superior surface area-normalized capacitance to typical carbon-based supercapacitor materials and good stability after 4500 cycles. Two- and three-electrode cell measurements showed that energy storage in the B-rG-O supercapacitors was contributed by ion adsorption on the surface of the nanoplatelets in addition to electrochemical redox reactions.

In‐plane or out‐of‐plane: Two low‐energy states of the phenylthiyl radical were observed in the photodissociation of [D1]thiophenol. The relative orientation of the singly occupied molecular orbital (SOMO) distinguishes the two species, namely X̃(B1) and Ã(B2). This orbital is largely localized on the sulfur atom and exhibits atomic‐orbital‐like alignment with respect to the molecular plane (see picture).

Improved measurements on silicon crystal samples highly enriched in the 28 Si isotope (known as 'Si28' or AVO28 crystal material) have been carried out at PTB to investigate local isotopic variations in the original crystal. This material was used for the determination of the Avogadro constant N A and therefore plays an important role in the upcoming redefinition of the SI units kilogram and mole, using fundamental constants.

The photodissociation dynamics of methylamines ͑CH 3 NH 2 and CD 3 ND 2 ͒ on the first electronically excited state has been investigated using the velocity map ion imaging technique probing the H or D fragment. Two distinct velocity components are found in the H͑D͒ translational energy distribution, implying the existence of two different reaction pathways for the bond dissociation. The high H͑D͒ velocity component with the small internal energy of the radical fragment is ascribed to the N-H͑D͒ fragmentation via the coupling of S 1 to the upper-lying S 2 repulsive potential energy surface along the N-H͑D͒ bond elongation axis. Dissociation on the ground S 0 state prepared via the nonadiabatic dynamics at the conical intersection should be responsible for the slow H͑D͒ fragment. Several S 1 vibronic states of methylamines including the zero-point level and n 9 states ͑n =1, 2, or 3͒ are exclusively chosen in order to explore the effect of the initial quantum content on the chemical reaction dynamics. The branching ratio of the fast and slow components is found to be sensitive to the initial vibronic state for the N-H bond dissociation of CH 3 NH 2 , whereas it is little affected in the N-D dissociation event of CD 3 ND 2. The fast component is found to be more dominant in the translational distribution of D from CD 3 ND 2 than it is in that of H from CH 3 NH 2. The experimental result is discussed with a plausible mechanism of the conical intersection dynamics.