浏览全部资源
扫码关注微信
集成光电子学国家重点联合实验室 吉林大学电子科学与工程学院,吉林 长春,130012
纸质出版日期:2015-5-3,
收稿日期:2015-1-12,
修回日期:2015-3-3,
扫 描 看 全 文
何光辉, 毕雪晴, 宋维业等. NaYF<sub>4</sub>:Yb<sup>3+</sup>,Tm<sup>3+</sup>/CdSe纳米异质结构的近红外上转换发光性能[J]. 发光学报, 2015,36(5): 491-496
HE Guang-hui, BI Xue-qing, SONG Wei-ye etc. NIR Upconversion Luminescence of NaYF<sub>4</sub>:Yb<sup>3+</sup>,Tm<sup>3+</sup>/CdSe Nanoheterostructures[J]. Chinese Journal of Luminescence, 2015,36(5): 491-496
何光辉, 毕雪晴, 宋维业等. NaYF<sub>4</sub>:Yb<sup>3+</sup>,Tm<sup>3+</sup>/CdSe纳米异质结构的近红外上转换发光性能[J]. 发光学报, 2015,36(5): 491-496 DOI: 10.3788/fgxb20153605.0491.
HE Guang-hui, BI Xue-qing, SONG Wei-ye etc. NIR Upconversion Luminescence of NaYF<sub>4</sub>:Yb<sup>3+</sup>,Tm<sup>3+</sup>/CdSe Nanoheterostructures[J]. Chinese Journal of Luminescence, 2015,36(5): 491-496 DOI: 10.3788/fgxb20153605.0491.
采用两步高温热分解法合成了纳米异质结构的NaYF
4
:Yb
3+
Tm
3+
/CdSe。X射线衍射测试结果表明样品由纯六角相的NaYF
4
(-NaYF
4
)和纤锌矿型CdSe组成。980 nm激发的上转换光谱表明NaYF
4
:Yb
3+
Tm
3+
和CdSe之间存在能量传递
Tm
3+
将Yb
3+
传递给它的能量部分地传递给CdSe
被激发的CdSe又将能量回传给Tm
3+
的相应能级
最终使得NaYF
4
:Yb
3+
Tm
3+
的紫外和蓝光发射完全消失
而797 nm的近红外发射大幅增强。NaYF
4
:Yb
3+
Tm
3+
/CdSe纳米异质结构的激发光和发射光均处于生物组织的光学透过窗口(700~1 100 nm)
对生物组织的光损伤小
在生物医学领域有很大的应用潜力。
NaYF
4
:Yb
3+
Tm
3+
/CdSe nanoheterostructures with NIR-to-NIR upconversion luminescence were synthesized by a two-step improved wet-chemical method. X-ray diffraction (XRD) characterization shows that the nanoheterostructures are composed of both pure hexagonal phase NaYF
4
:Yb
3+
Tm
3+
and wurtzite phase CdSe. Upconversion emission spectra under the excitation of 980 nm near-infrared laser show that 797 nm emission from Tm
3+
ions has been enhanced greatly
while neither ultraviolet nor blue emissions of Tm
3+
appear compared with that of pure NaYF
4
:Yb
3+
Tm
3+
. It indicates that the energy transfer occurs between NaYF
4
:Yb
3+
Tm
3+
and CdSe. Under 980 nm excitation
the energy absorbed by Yb
3+
ions transfers to Tm
3+
ions
then transfers to CdSe partially
and finally the excited CdSe returns the energy back to the corresponding energy levels of Tm
3+
. These processes lead to the quenching of UV and blue emissions and the enhancement of 797 nm emission of Tm
3+
ions in the NaYF
4
:Yb
3+
Tm
3+
/CdSe nanoheterostructures. The excitation (980 nm) and emission (797 nm) are both located in the NIR spectral range (700-1 100 nm) that is referred as the "optical window" of biological tissues because of the minimum of light scattering and autofluorescence of tissue and a relatively large penetration depth. Therefore
the present NaYF
4
:Yb
3+
Tm
3+
/CdSe nanoheterostructures could have potential applications in biology and biomedicine fields.
NaYF4:Yb3+Tm3+CdSe纳米异质结构上转换荧光能量传递
NaYF4:Yb3+Tm3+CdSenanoheterostructuresupconversion luminescenceenergy transfer
Shi F, Wang J, Zhang D, et al. Greatly enhanced size-tunable ultraviolet upconversion luminescence of monodisperse -NaYF4:Yb,Tm nanocrystals [J]. J. Mater. Chem., 2011, 21(35):13413-13421.
Zhang H, Li Y, Ivanov I A, et al. Plasmonic modulation of the upconversion fluorescence in NaYF4:Yb/Tm hexaplate nanocrystals using gold nanoparticles or nanoshells [J]. Angew. Chem., 2010, 122(16):2927-2930.
Song W Y, Shi F, Zhao D, et al. Synthesis and characterization of small size, water soluble, and intense ultraviolet upconversion emission of -NaYF4:Yb,Tm nanocrystals [J]. Chin. J. Lumin.(发光学报), 2012, 33(7):688-692 (in Chinese).
Chang J, Liu Y, Li J, et al. Strong red and NIR emission in NaYF4:Yb3+,Tm3+/QDs nanoheterostructures [J]. J. Mater. Chem. C, 2013, 1(6):1168-1173.
Heer S, Kmpe K, Gdel H U, et al. Highly efficient multicolour upconversion emission in transparent colloids of lanthanide-doped NaYF4 nanocrystals [J]. Adv. Mater., 2004, 16(23-24):2102-2105.
Wang F, Liu X. Upconversion multicolor fine-tuning:Visible to near-infrared emission from lanthanide-doped NaYF4 nanoparticles [J]. J. Am. Chem. Soc., 2008, 130(17):5642-5643.
Yi G, Lu H, Zhao S, et al. Synthesis, characterization, and biological application of size-controlled nanocrystalline NaYF4:Yb,Er infrared-to-visible up-conversion phosphors [J]. Nano Lett., 2004, 4(11):2191-2196.
Zhang J Y, Hou G H, Shi J J, et al. Fabrication and luminescent property of NaYF4:Yb3+,Tm3+ loaded chitosan microspheres [J]. Chin. J. Lumin.(发光学报), 2013, 34(2):160-164 (in Chinese).
Li Y H, Zang G F, Ma J, et al. Synthesis and luminescence properties of rare earth doped NaGdF4 upconversion phosphors [J]. Chin. J. Lumin.(发光学报), 2013, 34(8):982-987 (in Chinese).
Yi G S, Chow G M. Synthesis of hexagonal-phase NaYF4:Yb,Er and NaYF4:Yb,Tm nanocrystals with efficient up-conversion fluorescence [J]. Adv. Funct. Mater., 2006, 16(18):2324-2329.
Niu W, Wu S, Zhang S, et al. Synthesis of color tunable lanthanide-ion doped NaYF4 upconversion nanoparticles by controlling temperature [J]. Chem. Commun., 2010, 46(22):3908-3910.
Zhao C Z, Kong X G, Song S G, et al. Effect of doping rare-earth concentrations on the luminescence spectrum of NaYF4:Yb3+,Tm3+ nanocrystals [J]. Chin. J. Lumin.(发光学报), 2013, 34(8):959-964 (in Chinese).
Maestro L M, Rodrguez E M, Rodrguez F S, et al. CdSe quantum dots for two-photon fluorescence thermal imaging [J]. Nano Lett., 2010, 10(12):5109-5115.
Chan W C W, Nie S. Quantum dot bioconjugates for ultrasensitive nonisotopic detection [J]. Science, 1998, 281(5385):2016-2018.
Yan C, Dadvand A, Rosei F, et al. Near-IR photoresponse in new up-converting CdSe/NaYF4:Yb,Er nanoheterostructures [J]. J. Am. Chem. Soc., 2010, 132(26):8868-8869.
0
浏览量
42
下载量
2
CSCD
关联资源
相关文章
相关作者
相关机构