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Growth and optical properties of colloidal graphene quantum dots
Author(s) -
McGuire John A.
Publication year - 2016
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201510287
Subject(s) - graphene , quantum dot , dirac fermion , nanotechnology , zigzag , dirac (video compression format) , bilayer graphene , quantum , materials science , exciton , chemical physics , chemistry , physics , condensed matter physics , quantum mechanics , geometry , mathematics , neutrino
Synthetic progress has led to growth of monodisperse colloidal graphene quantum dots large enough that the lowest‐energy electronic states can be understood in terms of confined Dirac fermions. Appropriate ligands inhibit aggregation and promote solubility that now permit optical studies of excitons and biexcitons formed of Dirac fermions in ensembles of individual quantum dots. Here we review recent progress in synthesis and understanding of the optical properties and dynamics of colloidal graphene quantum dots as well as related aspects of other nanoscale graphene structures and polycyclic aromatic hydrocarbons. We highlight graphene quantum dots that are fully benzenoid and discuss challenges in studying colloidal graphene quantum dots with zigzag edges.Graphene quantum dot ( C168 ) consisting of 168 sp 2 hybridized C atoms. R indicates ligands. (© 2015 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim)