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Journal of Electron Microscopy Advance Access originally published online on August 25, 2005
Journal of Electron Microscopy 2005 54(4):325-330; doi:10.1093/jmicro/dfi043
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© The Author 2005. Published by Oxford University Press on behalf of Japanese Society of Microscopy. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org

Cathodoluminescence investigation of organic materials

Jun-ichi Niitsuma1,*, Hidetoshi Oikawa1,3, Eiji Kimura2,4, Tatsuo Ushiki2 and Takashi Sekiguchi1

1 Nanomaterials Laboratory, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan and 2 Division of Microscopic Anatomy and Bio-imaging, Niigata University Graduate School of Medical and Dental Sciences, Asahimachi-dori, Niigata 951-8510, Japan
3 Present address: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
4 Present address: Department of Histology, School of Medicine, Iwate Medical University, Uchimaru 19-1, Morioka 020-8505, Japan

* To whom correspondence should be addressed. E-mail: NIITSUMA.Junichi{at}nims.go.jp

Cathodoluminescence (CL) properties of various kinds of organic material were investigated for the purpose of staining biological specimens and obtaining CL images. Several kinds of organic light emitting device (OLED) material exhibited CL. The europium complex, Eu(dbm)3(phen), showed the strongest CL signal and was chemically modified for biological staining. However, the CL intensity from the stained biological specimen was too weak to build CL images. We discussed the CL properties of organic materials considering their chemical structure and charge distribution in the molecules.

Keywords     cathodoluminescence, scanning electron microscopy, organic materials, europium complex, electron beam damage, biological application

Received      2 December 2004, accepted 6 June 2005


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