Er(3+)/Yb(3+) co-doped nanocrystals modified with 6-aminocaproic acid for temperature sensing in biomedicine.
Er(3+)/Yb(3+) co-doped nanocrystals modified with 6-aminocaproic acid for temperature sensing in biomedicine.
复制标题
6-氨基己酸修饰的 Er3 /Yb3 共掺杂纳米晶用于生物医学温度传感
作者：
报道了用6-氨基己酸(6AA)修饰的β-PbF_2：Er3+/Yb~(3+)纳米晶(NC)。通过刻蚀玻璃基质，将三价稀土(RE3+)离子掺杂的纳米碳管从玻璃基质中释放出来，并用双官能团的6AA配体对其进行修饰，以提高其水溶性。它们在平均粒径为56 nm的水中具有良好的稳定性，在940 nm激光激发下表现出高效的绿光(521,550 nm)和红光(660 Nm)发射。利用荧光强度比(FIR)技术，在生物温度范围内获得了高的绝对灵敏度(SA)和相对灵敏度(SR)(分别为0.0027 K−1和1.18%K−1)和高分辨率(0.25K)。实验结果表明，用6AA修饰的Er3+/Yb3+共掺纳米碳管有望作为荧光生物温度传感器。报道了用6-氨基己酸(6AA)修饰的β-PbF_2：Er3+/Yb~(3+)纳米晶(NC)。
We report β-PbF2:Er3+/Yb3+ nanocrystals (NCs) modified with 6-aminocaproic acid (6AA) via wet chemical etching of glass ceramics (GCs). NCs body-doped with trivalent rare-earth (RE3+) ions were released from the GCs by etching of the glass matrix and modified with bifunctional 6AA ligands to enhance their water solubility. They have good stability in water with an average diameter of 56 nm and display efficient green (521, 550 nm) and red (660 nm) emission under the excitation of a 940 nm laser. High absolute sensitivity (SA) and relative sensitivity (SR) (0.0027 K−1 and 1.18% K−1, respectively) and high resolution (0.25 K) were achieved for temperature sensing in the biological temperature range, using the fluorescence intensity ratio (FIR) technique. All of the experimental results indicate that the Er3+/Yb3+ co-doped NCs modified with 6AA may potentially be useful as fluorescent biological temperature sensors. We report β-PbF2:Er3+/Yb3+ nanocrystals (NCs) modified with 6-aminocaproic acid (6AA) via wet chemical etching of glass ceramics (GCs).
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影响因子：
--
作者：
Mori M;Kovalenko L;Lyonnais S;Antaki D;Torbett BE;Botta M;Mirambeau G;Mély Y
通讯作者：
Mély Y
影响因子：
1.6
作者：
Bogue, Robert
通讯作者：
Bogue, Robert
影响因子：
2.8
作者：
Li, Chengren;Dong, Bin;Song, Changhe
通讯作者：
Song, Changhe
影响因子：
3.5
作者：
MCMILLAN, P;PIRIOU, B
通讯作者：
PIRIOU, B
DOI：
10.1016/bs.hpcre.2016.03.005
发表时间：
2016-01-01
期刊：
HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS: INCLUDING ACTINIDES, VOL 49
影响因子：
--
作者：
Brites, C. D. S.;Millan, A.;Carlos, L. D.
通讯作者：
Carlos, L. D.