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.
复制标题

DOI:
10.1002/ejic.201701003
复制
发表时间:
2017-11-23
影响因子:
2.3
通讯作者:
Kovacs Z
Kovacs Z
中科院分区:
化学3区
文献类型:
--
作者:
Hashami Z;Martins AF;Funk AM;Jordan VC;Petoud S;Eliseeva SV;Kovacs Z

文献摘要

参考文献

被引文献

相似文献

在这项工作中,我们描述了一种新的DOTA(1,4,7,10-tetraazacyclodecane-1,4,7,10-tetraacetic acid)为基础的配体与发色酮配位侧臂(1)。1的Ln ~(3+)配合物具有一个内层水分子。Gd 1的弛豫率与市售Gd基MRI试剂的弛豫率相似。与GdDOTA相比,环庚三烯酮部分的中性O-供体原子使水交换速率减慢3倍。此外,Nd 1和Yb 1配合物在水溶液中表现出显着的近红外发射,表明tropone单元是这些Ln 3 +-离子的有效敏化剂。因此,这种新的配体是一个有前途的平台,用于设计基于Ln 3+的双MR/光学成像探针。具有环庚三烯酮配位侧臂的DOTA衍生物形成一水合镧系元素络合物。Gd ~(3+)螯合物具有预期的弛豫率,而Nd ~(3+)和Yb ~(3+)配合物则表现出明亮的近红外发光,尽管内球水分子具有猝灭效应。
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.
DOI: 10.1016/s1387-7003(01)00153-8
发表时间: 2001-04-01
影响因子: 3.8
作者:
Faulkner, S;Beeby, A;Sammes, PG
通讯作者: Sammes, PG
DOI: 10.1002/anie.201311028
发表时间: 2014-03-10
影响因子: 16.6
作者:
Foucault-Collet, Alexandra;Shade, Chad M.;Eliseeva, Svetlana V.
通讯作者: Eliseeva, Svetlana V.
DOI: 10.1016/j.jlumin.2016.09.058
发表时间: 2017-09-01
影响因子: 3.6
作者:
Martinic, Ivana;Eliseeva, Svetlana V.;Petoud, Stephane
通讯作者: Petoud, Stephane
基于物理和生物学的下一代分子成像探针的合理化学设计:混合方式,颜色和信号。
DOI: 10.1039/c1cs15077d
发表时间: 2011-09
影响因子: 46.2
作者:
Kobayashi H;Longmire MR;Ogawa M;Choyke PL
通讯作者: Choyke PL
DOI: 10.1016/0039-9140(69)80179-7
发表时间: 1969-01-01
期刊: TALANTA
影响因子: 6.1
作者:
DUTT, Y;SINGH, RP
通讯作者: SINGH, RP