Nanostructure origins of C60 fluorescence in pyridine.
The nanostructure origins of three distinct and strong fluorescence bands of C60 in room-temperature pyridine are reported for the first time. Fluorescence study and in-situ TEM observation on C60-pyridine solutions with different setting times exhibit that the blue fluorescence peaks centered at 440 nm originate from C60 nanoparticles; the yellow-green fluorescence band located at 575 nm derives from C60 lace-like cluster; and the salmon pink fluorescence band around 700 nm arises from C60 microbulk in solution. The conclusions are supported further by investigation on the C60-toluene system as well.
Zhang
Fang
F
Beijing Key Lab for Nano-photonics and Nano-structure, Department of Physics, Capital Normal University, Beijing 100037, People's Republic of China.
Fang
Yan
Y