Lanthanide DO3A-tropone complexes: efficient dual MR/NIR imaging probes in aqueous medium.
Lanthanide DO3A-tropone complexes: efficient dual MR/NIR imaging probes in aqueous medium.
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DOI:
10.1002/ejic.201701003
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发表时间:
2017-11-23
影响因子:
2.3
通讯作者:
Kovacs Z
中科院分区:
文献类型:
--
作者:
Hashami Z;Martins AF;Funk AM;Jordan VC;Petoud S;Eliseeva SV;Kovacs Z
In this work, we describe a novel DOTA (1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid) based ligand with a chromophoric tropone coordinating sidearm (1). Ln3+ complexes of 1 have one inner sphere water molecule. The r1 relaxivity of Gd1 is similar to that of the commercial Gd-based MRI agents. The neutral O-donor atom of the tropone moiety slows down the water exchange rate by a factor of 3 compared to GdDOTA. In addition, Nd1 and Yb1 complexes exhibit significant NIR emission in aqueous solutions indicating that the tropone unit is an efficient sensitizer for these Ln3+-ions. Therefore, this new ligand is a promising platform for the design of Ln3+ based dual MR/optical imaging probes. A DOTA derivative with a tropone coordinating sidearm forms monohydrated lanthanide complexes. The Gd3+-chelate has the expected relaxivity while the Nd3+ and Yb3+ complexes exhibit bright NIR luminescence despite the quenching effect of the inner sphere water molecule.
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影响因子:
3.8
作者:
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通讯作者:
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影响因子:
16.6
作者:
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影响因子:
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作者:
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影响因子:
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通讯作者:
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影响因子:
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作者:
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