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29 August 2002 Strongly luminescent rare-earth-ion-doped DNA-CTMA complex film and fiber materials
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Proceedings Volume 4905, Materials and Devices for Optical and Wireless Communications; (2002)
Event: Asia-Pacific Optical and Wireless Communications 2002, 2002, Shanghai, China
A rare-earth chelate, Europium 6,6.7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5,-octanedionate, (Eu3+-FOD) doped DNACTMA complex as fiber and film materials was prepared by casting solution method and gel-spinning method. The Eu-FOD-DNA-CTMA complex was luminescent and has 750 μs of fluorescence lifetime, sharply-spiked emission spectra, excellent film and fiber formability, moderate absorption (40000M-1cm-1) at 327 nm and high quantum yield forlanthanide emission. By comparison of fluorescence lifetime of Eu-FOD doped DNA-CTMA solid matrix with that of Eu-FOD doped in PMMA, it was clear that energy transfer from DNA to FOD leads to enhancement of fluorescence emission at 613 nm. Analysis results for fluorescence spectra and fluorescence relaxation time of Eu3+ doped in the materials indicated that Eu3+-FOD is chemically bond within the DNA-CTMA matrix. Amplified spontaneous emission (ASE) at 612 nm by pumping with UV laser (355 nm) was observed in the materials. Fluorescence lifetime of the Eu-FOD doped in the DNA-CTMA solid matrix was evaluated to be 750 μs, which is ca. 230μs longer than that of Eu-FOD doped in PMMA solid matrix. Efficient Energy transfer from base of DNA to FOD, then to Eu, occurred when irradiated by UV light or 355 laser beams.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lili Wang, Koki Ishihara, H. Izumi, M. Wada, Gongjian Zhang, T. Ishikawa, A. Watanabe, Suguru Horinouchi, and Naoya Ogata "Strongly luminescent rare-earth-ion-doped DNA-CTMA complex film and fiber materials", Proc. SPIE 4905, Materials and Devices for Optical and Wireless Communications, (29 August 2002);

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