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| Type |
Poster Presentation |
| Area |
Inorganic Chemistry |
| Room No. |
Event Hall |
| Time |
4월 19일 (목요일) 11:00~12:30 |
| Code |
INOR.P-206 |
| Subject |
Bright emission of Core/Double-shell Upconversion Nanophosphors under 800 nm NIR light |
| Authors |
A-Ra Hong, Kwangyeol Lee, Ho Seong Jang1,*
Department of Chemistry, Korea University, Korea
1Korea Institute of Science and Technology, Korea
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| Abstract |
Lanthanide doped upconversion nanophosphors (UCNPs) have unique properties such as long life time, photostability, and non-toxicity. Due to these properties, the UCNPs are suitable for bio application such as bio-imaging and bio sensor. Most UCNPs emit visible light by excitation with 980 nm near infrared (NIR) light. In this case, deep tissue imaging is difficult because the penetration depth of the 980 nm NIR light is greatly reduced due to the high absorption of water within biomolecules. Therefore, we need the UCNPs that exhibit strong emission under 800 nm NIR light where water absorption is low for using bio application.
In this study, we synthesized core/shell (C/S) UCNPs that emit visible light under 800 nm NIR excitation. In addition, the core/double-shell (C/D-S) structure was introduced to enhance luminescence under 800 nm NIR light, and the C/D-S UCNPs showed 2.8 times brighter emission than C/S UCNPs. Furthermore, we investigated the applicability of bio-imaging using the C/D-S UCNPs.
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| E-mail |
214506@kist.re.kr |
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121st General Meeting of the KCS