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有机染料和量子点等荧光标记材料存在发射光谱宽、 光热稳定性差和细胞毒性等缺陷, 限制了其在生物学研究中的应用. 镧系掺杂上转换发光材料不存在自发荧光和光漂白现象, 灵敏度高, 长期稳定性好, 利于活体检测. 论文首次采用热解法, 以油酸和十八烯为表面活性剂和溶剂, 制备了KY3F10: Yb, RE(RE=Er, Ho, Tm) 纳米晶. 研究了油酸含量对产物形貌和粒径尺寸的影响, 当油酸与十八烯的比例为3:1时, 为制备类球形单分散纳米晶体的最佳工艺条件, 在980 nm半导体激光器激发下, 样品KY3F10: Yb, RE(RE=Er, Ho, Tm) 分别发射出较强的黄绿、 绿色和蓝色光, 这些结果显示KY3F10: Yb, RE(RE=Er, Ho, Tm) 纳米粒子作为生物探针在多重荧光标记方面具有优异的特性.
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关键词:
- KY3F10: Yb /
- RE(RE=Er,Ho,Tm) 纳米晶 /
- 荧光标记 /
- 上转换发光
Organic dyes and quantum dots possess the defects: wide emission spectrum and the poor photothermal stability and cytotoxicity, which restricts their applications in biological studies. Lanthanide-doped upconversion fluorescent materials in which there exists neither autofluorescence nor light bleaching phenomenon, has high sensitivity and good long-term stability, which are conducive to in vivo detection. KY3F10: Yb, RE(RE=Er, Ho, Tm) nanocrystals are synthesized by the thermal decomposition method and oleic acid as surface coating agent. The effects of the oleic acid content on morphology and particle size are studied. Optimal ratio of oleic acid to octadecene is 3:1 for the preparation of spherical monodisperse nanocrystals. Strong yellow green, green and blue emissions from the prepared samples are observed at 980 nm laser excitation. These results show that KY3F10: Yb, RE (RE=Er, Ho, Tm) nanoparticles as biological probes have excellent features in multiple fluorescent markers.-
Keywords:
- KY3F10: Yb /
- RE(RE=Er,Ho,Tm) nanocrystals /
- fluorescence label /
- upconversion luminescence
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[14] Liu L S, Lu S C, Sun J T 2010 Acta Phys. Sin. 59 6637 (in Chinese) [刘丽莎, 吕树臣, 孙江亭 2010 物理学报 59 6637]
[15] Mahalingam V, Vetrone F, Naccache R, Speghini A, Capobianco J A 2009 J. Mater. Chem. 19 3149
[16] Liu M Y, Sun W J 2011 Acta Phys. Sin. 60 077804 (in Chinese) [刘名扬, 孙维瑾 2011 物理学报 60 077804]
[17] Wen B N, Su L W, Shu F Z 2010 Chem. Commun. 46 3908
[18] Tian Y C, Tian S Y, Yuan G 2010 Inorg. Chem. Commun. 13 392
[19] Peng Z A, Peng X G 2001 J. Am .Chem. Soc. 123 1389
[20] Vetrone F, Boyer J C, Capobianco J A, Speghini A, Bettinelli M 2004 Appl. Phys. 96 661
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[1] Rana S, Yeh Y C, Rotello V M 2010 Chem. Biol. 14 828
[2] Shen J, Sun L D, Yan C H 2008 Dalton Trans. 42 5687
[3] Marha G G, Ricardo J A, Sergio M, Maria J A, Sara P, Sayagües J M, Alberto O, Manuel F 2012 Eur. J. Harm. Sci. 45 499
[4] Lim S F, Riehn R, Ryu W S, Khanarian N, Tung C K, Tank D, Austin R H 2006 Nano Lett. 6 169
[5] Xu C H, Liu C X, Guo H L, Li Z L, Jing Y Q, Zhang D Z, Yuan M 2006 Acta Phys. Sin. 55 206 (in Chinese) [徐春华, 刘春香, 郭红莲, 李兆霖, 降雨强, 张道中, 袁明 2006 物理学报 55 206]
[6] Wu S M, Tian Z Q, Zhang Z L, Huang B H, Jiang P, Xie Z X, Pang D W 2010 Biosens. Bioelectron. 26 491
[7] Boyer J C, Cuccia L A, Capobianco J A 2007 Nano Lett. 7 847
[8] Nunez N O, Quintanilla M, Cantelar E, Cussó F, Ocaña M 2010 J. Nanopart. Res. 12 2553
[9] Wang J, Wang F, Xu J, Wang Y, Liu Y S, Chen X Y, Chen H Y, Liu X G 2010 Med. Sci. 13 731
[10] Yi G S, Chow G M 2005 J. Mater. Chem. 15 4460
[11] Guo L N, Wang Y H 2011 Acta Phys. Sin. 60 027803 (in Chinese) [郭琳娜, 王育华 2011 物理学报 60 027803]
[12] Li Y G, Liu S W, Wang A H, Song L J 2011 Acta Phys. Sin. 60 073201 (in Chinese) [李堂刚, 刘素文, 王恩华, 宋灵君 2011 物理学报 60 073201]
[13] Wang D G, Zhou Y S, Wang S S, Dai S S, Shen X, Chen F F, Wang S 2010 Acta Phys. Sin. 59 6256 (in Chinese) [王大刚, 周亚训, 王训四, 戴世勋, 沈祥, 陈飞飞, 王森 2010 物理学报 59 6256]
[14] Liu L S, Lu S C, Sun J T 2010 Acta Phys. Sin. 59 6637 (in Chinese) [刘丽莎, 吕树臣, 孙江亭 2010 物理学报 59 6637]
[15] Mahalingam V, Vetrone F, Naccache R, Speghini A, Capobianco J A 2009 J. Mater. Chem. 19 3149
[16] Liu M Y, Sun W J 2011 Acta Phys. Sin. 60 077804 (in Chinese) [刘名扬, 孙维瑾 2011 物理学报 60 077804]
[17] Wen B N, Su L W, Shu F Z 2010 Chem. Commun. 46 3908
[18] Tian Y C, Tian S Y, Yuan G 2010 Inorg. Chem. Commun. 13 392
[19] Peng Z A, Peng X G 2001 J. Am .Chem. Soc. 123 1389
[20] Vetrone F, Boyer J C, Capobianco J A, Speghini A, Bettinelli M 2004 Appl. Phys. 96 661
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