TY - JOUR
T1 - Size sorted multicolor fluorescence graphene oxide quantum dots obtained by differential velocity centrifugation
AU - Wei, Junhua
AU - Qiu, Jingjing
AU - Ren, Liqiang
AU - Zhang, Kun
AU - Wang, Shiren
AU - Weeks, Brandon
PY - 2014
Y1 - 2014
N2 - This paper provides an effective synthesis and size sorting approach to graphene oxide quantum dots (GOQDs) with size-dependent optical properties. GOQDs were first prepared through oxidation of commercially available stacked graphene nanofibers. The as-synthesized GOQDs were then sorted into different sizes by differential velocity centrifugation. The optical properties of size-sorted GOQDs were characterized by UV-vis-NIR and photoluminescence spectroscopies. It was found that the size of the GOQDs not only shifted the fluorescence colour, but also tuned the quantum yields. Compared with the micro sized Graphene Oxide, the GOQD exhibited sharp, stable, and relatively high quantum yield fluorescence.
AB - This paper provides an effective synthesis and size sorting approach to graphene oxide quantum dots (GOQDs) with size-dependent optical properties. GOQDs were first prepared through oxidation of commercially available stacked graphene nanofibers. The as-synthesized GOQDs were then sorted into different sizes by differential velocity centrifugation. The optical properties of size-sorted GOQDs were characterized by UV-vis-NIR and photoluminescence spectroscopies. It was found that the size of the GOQDs not only shifted the fluorescence colour, but also tuned the quantum yields. Compared with the micro sized Graphene Oxide, the GOQD exhibited sharp, stable, and relatively high quantum yield fluorescence.
KW - Centrifugation
KW - Fluorescence
KW - Graphene oxide quantum dot
KW - Size sorting
UR - http://www.scopus.com/inward/record.url?scp=84902337782&partnerID=8YFLogxK
U2 - 10.1166/sam.2014.1866
DO - 10.1166/sam.2014.1866
M3 - Article
AN - SCOPUS:84902337782
VL - 6
SP - 1052
EP - 1059
JO - Science of Advanced Materials
JF - Science of Advanced Materials
SN - 1947-2935
IS - 5
ER -