Nanosized crystallites of charge-transfer complex of 9-methylanthracene and 1,2,4,5-tetracyanobenzene for bright and optically anisotropic fluorescent probes

被引:11
|
作者
Hosaka, Noriko [1 ]
Obata, Masahiro [2 ]
Suzuki, Motohiko [2 ]
Saiki, Toshiharu [1 ,2 ]
Takeda, Kenji [3 ,4 ]
Kuwata-Gonokami, Makoto [3 ,4 ]
机构
[1] Kanagawa Acad Sci & Technol, Takatsu Ku, Kanagawa 2130012, Japan
[2] Keio Univ, Dept Elect & Elect Engn, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan
[3] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan
[4] Japan Sci & Technol Agcy, SORST, Bunkyo Ku, Tokyo 1138656, Japan
关键词
D O I
10.1063/1.2899056
中图分类号
O59 [应用物理学];
学科分类号
摘要
Nanocrystallites of charge-transfer (CT) complexes with an average size of 20-40 nm were synthesized from ethyl acetate solutions of 9-methylanthracene and 1,2,4,5-tetracyanobenzene by means of spin coating. The optical properties of nanocrystallites were investigated by dark-field and fluorescence imagings. No blinking behavior was observed. Fluorescence brightness and photostability comparable to a standard dye-doped polystyrene sphere were confirmed. We found a pronounced dependence of fluorescence intensity on the polarization of excitation light due to optical anisotropy of the nanocrystallites. The results indicate that the CT nanocrystallite is a promising tool for the observation of rotational motion of nanoobjects in nanofluidics. (C) 2008 American Institute of Physics.
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