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A d-f heteronuclear complex for dual-mode phosphorescence and magnetic resonance imaging
被引:44
|作者:
Yang, Hong
[2
,3
]
Ding, Liang
[2
,3
]
An, Lu
[2
,3
]
Xiang, Zheyuan
[2
,3
]
Chen, Min
[1
]
Zhou, Jing
[1
]
Li, Fuyou
[1
]
Wu, Dongmei
[4
]
Yang, Shiping
[2
,3
]
机构:
[1] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China
[2] Shanghai Normal Univ, Dept Chem, Key Lab Resource Chem, Minist Educ, Shanghai 200234, Peoples R China
[3] Shanghai Normal Univ, Dept Chem, Shanghai Key Lab Rare Earth Funct Mat, Shanghai 200234, Peoples R China
[4] E China Normal Univ, Dept Phys, Shanghai Key Lab Magnet Resonance, Shanghai 200062, Peoples R China
基金:
中国国家自然科学基金;
关键词:
d-f heteronuclear complex;
Ir-Gd complex;
Phosphorescence imaging;
Magnetic resonance imaging;
UP-CONVERSION LUMINESCENCE;
IRIDIUM(III) COMPLEXES;
MRI;
NANOPHOSPHORS;
NANOCRYSTALS;
PROBES;
AGENTS;
D O I:
10.1016/j.biomaterials.2012.07.067
中图分类号:
R318 [生物医学工程];
学科分类号:
0831 ;
摘要:
A d-f heteronuclear complex (Ir-Gd) by coupling an iridium(III) complex to a macrocycle-based gadolinium complex has been developed as as a dual-mode bioimaging probe for luminescence imaging and magnetic resonance imaging (MRI). The cyclometalated iridium complex showed an intense visible metal-to-ligand charge transfer (MLCT) absorption and strong yellow phosphorescent luminescence. It has specificity of staining in murine mitochondria confirmed by confocal laser scanning microscopy. The macrocycle-based gadolinium complex provides the longitudinal relaxivity of 3.36 mM(-1)s(-1) on a 3 T system, which has been applied to MRI for liver in mice. Furthermore, the biodistribution of Ir-Gd has been investigated using inductively coupled plasma atomic emission spectroscopy (ICP-AES) analyses. Such platform should be extended to further applications in the identification and diagnosis of liver diseases. (C) 2012 Elsevier Ltd. All rights reserved.
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页码:8591 / 8599
页数:9
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