01489nas a2200205   4500008004100000245005900041210005700100260000800157300001600165490000600181520084400187100001801031700002401049700002201073700002501095700001901120700002501139700003001164856008901194       2015                        eng d00aSynthesis of N, F and S co-doped graphene quantum dots0 aSynthesis of N F and S codoped graphene quantum dots  cMAY  a11515-115190 v73 a<p>Graphene quantum dots (GQDs) are a promising category of materials with remarkable size dependent properties like tunable bandgap and photoluminescence along with the possibility of effective chemical functionalization. Doping of GQDs with heteroatoms is an interesting way of regulating their properties. Herein, we report a facile and scalable one-step synthesis of luminescent GQDs, substitutionally co-doped with N, F and S, of similar to 2 nm average size by a microwave treatment of multi-walled carbon nanotubes in a customized ionic liquid medium. The use of an ionic liquid coupled with the use of a microwave technique enables not only an ultrafast process for the synthesis of co-doped GQDs, but also provides excellent photoluminescence quantum yield (70%), perhaps due to the interaction of defect clusters and dopants.</p>1 aKundu, Sumana1 aYadav, Ram, Manohar1 aNarayanan, T., N.1 aShelke, Manjusha, V.1 aVajtai, Robert1 aAjayan, Pulickel, M.1 aPillai, Vijayamohanan, K.  uhttp://library.ncl.res.in/content/synthesis-n-f-and-s-co-doped-graphene-quantum-dots02030nas a2200205   4500008004100000245017400041210006900215260000800284300002800292490000600320520120800326100002501534700002301559700002001582700002101602700002901623700001901652700002501671856012801696       2017                        eng d00aFacile synthesis of 3D anode assembly with Si nanoparticles sealed in highly pure few layer graphene deposited on porous current collector for long life Li‐Ion battery0 aFacile synthesis of 3D anode assembly with Si nanoparticles seal  cMAR  aArticle Number: 16010430 v43 aWith its exceptional theoretical charge capacity, silicon holds great promise as an anode material for realization of high energy density Li-ion batteries. However, extensive volume expansion and poor cycle stability of silicon compromise its actual use. In an effort to tame volume expansion and structural disintegration during cycling, an innovative 3D electrode assembly is fabricated involving continuous layer of graphene coated on porous current collector and Si nanoparticles sealed in as an active material. Graphene deposition and pore formation in metal current collector is achieved in a unique single step synthesis. All the active components like current collector, reacting material, and conducting material are manipulated in a way to produce synergistic architecture in a chemical vapor deposition process. Highly pure graphene deposited in this process enables efficient electron transfer from allover of the surface of silicon nanoparticles and prevents continuous solid electrolyte interphase layer formation. This binder free anode assembly shows extremely stable lithium storage performance for over 1000 cycles with 88% of initial capacity retention and 100% Coulombic efficiency.1 aShelke, Manjusha, V.1 aGullapalli, Hemtej1 aKalaga, Kaushik1 aRodrigues, Marco1 aDevarapalli, Rami, Reddy1 aVajtai, Robert1 aAjayan, Pulickel, M.  uhttp://library.ncl.res.in/content/facile-synthesis-3d-anode-assembly-si-nanoparticles-sealed-highly-pure-few-layer-graphene