Presentation 2022-01-28
Liquid phase synthesis of near-infrared phosphor Ca2GeO4: Mn5+ for in vivo bioimaging
Yudai Nitta, Hiroto Sanzen, Koutoku Ohmi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In our previous studies, Ca2GeO4:Mn5+ has been synthesized as a near-infrared (NIR) phosphor for bioimaging by the solid-phase reaction method. It was confirmed that the photoluminescence (PL) shows a NIR emission at around 1000 - 1300 nm, which corresponds to the wavelength region so called “biological window”. In order to apply it DDS (Drug Delivery System), in this study, we have investigated the effects of hydrothermal temperature and atmospheric annealing treatment after synthesis. As a result, NIR emitting Ca2GeO4: Mn5+ with a particle size of 400 nm has been obtained by combining the hydrothermal synthesis at 210 °C and atmospheric post annealing at 1300 °C.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Mn5+ activated phosphor / Ca2GeO4:Mn5+ / NIR phosphor / Liquid phase synthesis / in-vivo fluorescence bioimaging
Paper # EID2021-7
Date of Issue 2022-01-20 (EID)

Conference Information
Committee ITE-IDY / EID / IEE-EDD / SID-JC / IEIJ-SSL
Conference Date 2022/1/27(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Online (Zoom)
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Toshimitsu Tsuzuki(NHK) / Masahiro Yamaguchi(Tokyo Inst. of Tech.)
Vice Chair / Masayuki Kanbara(NAIST) / Tomoyuki Ishihara(Japan Display)
Secretary (Shizuoka Univ.) / Masayuki Kanbara(Tohoku Univ.) / Tomoyuki Ishihara(NTT) / (SHARP)
Assistant / Hiroshi Tsuji(NHK) / Mutsumi Kimura(Ryukoku Univ.) / Tomokazu Shiga(Univ. of Electro-Comm.) / Hiroko Kominami(Shizuoka Univ.) / Rumiko Yamaguchi(Akita Univ.) / Mitsuhiro Akimoto(Sanyo-Onoda City Univ)

Paper Information
Registration To Technical Group on Information Display / Technical Committee on Electronic Information Displays / Technical Group on Electron Devices / Society for Information Display Japan Chapter / *
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Liquid phase synthesis of near-infrared phosphor Ca2GeO4: Mn5+ for in vivo bioimaging
Sub Title (in English)
Keyword(1) Mn5+ activated phosphor
Keyword(2) Ca2GeO4:Mn5+
Keyword(3) NIR phosphor
Keyword(4) Liquid phase synthesis
Keyword(5) in-vivo fluorescence bioimaging
1st Author's Name Yudai Nitta
1st Author's Affiliation Tottori University(Tottori Univ.)
2nd Author's Name Hiroto Sanzen
2nd Author's Affiliation Tottori University(Tottori Univ.)
3rd Author's Name Koutoku Ohmi
3rd Author's Affiliation Tottori University(Tottori Univ.)
Date 2022-01-28
Paper # EID2021-7
Volume (vol) vol.121
Number (no) EID-353
Page pp.pp.13-16(EID),
#Pages 4
Date of Issue 2022-01-20 (EID)