Size-control and optical properties of organic nanocrystals.
We prepared the organic nanocrystals by the reprecipitation method using a carbosiloxane dendrimer. The dispersing process can be controlled by the carbosiloxane dendrimer which presented good site-isolation effect in host-guest chemistry. The size and shape of the controlled nanocrystals were analyzed by UV/vis spectroscopy and SEM. The absorbance of UV/vis spectra varied during the evolving process. The shape was more regular and the size can be well controlled under 100 nm. The results indicated the optical properties of organic nanocrystals strongly depends on their sizes.
Laboratory of Organic NanoPhotonics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Zhongguancunbeiyitiao No. 2, Beijing 100190, P. R. China.
Mei-Ling
ML
Zheng
Qi-Li
QL
Tang
Wei-Qiang
WQ
Chen
Xuan-Ming
XM
Duan