[EN] FORMATION AND USES OF EUROPIUM<br/>[FR] PRODUCTION ET UTILISATIONS DE L'EUROPIUM
申请人:UNIV WAYNE STATE
公开号:WO2014164712A1
公开(公告)日:2014-10-09
An MRI contrast composition includes a liposome and a europium metal complex disposed within the liposome. The europium metal complex includes a europium metal ion and a multi-dentate ligand selected from the group consisting of cryptands and thiacryptands and one or more counter-ions that balances a charge of the europium metal ion and the multi-dentate ligand, the europium metal ion being switchable between a 2+ and 3+ oxidation state. The contrast composition advantageously provides an oxidation-responsive dual-mode contrast agent because it would enhance either T1-weighted images or CEST images depending on the oxidation state of Eu.
The present invention provides a method of forming an oxidatively-stable aqueous Eu(II) complex by synthesizing ligands that coordinate to large, soft, electron rich metals like Eu(II). The invention also provides an oxidatively stable aqueous Eu(II) complex. The complex can be used for a variety of purposes some of which include, but are not limited to, in paramagnetic chemical exchange saturation transfer, as a medical diagnostic, as a semiconductor, and for use in forming materials.
Oxidatively Stable, Aqueous Europium(II) Complexes through Steric and Electronic Manipulation of Cryptand Coordination Chemistry
作者:Nipuni-Dhanesha H. Gamage、Yujiang Mei、Joel Garcia、Matthew J. Allen
DOI:10.1002/anie.201002789
日期:2010.11.15
A series of cryptands has been prepared and they demonstrate the relationship between oxidative stability of aqueous EuII and ligand properties (see figure). One of these EuII complexes is more stable than FeII in hemoglobin and appears to be the most oxidatively‐stableaqueous EuII species known. The high stability of EuII is expected to enable the use of the unique magnetic and optical properties
已经制备了一系列穴状配体,它们证明了 Eu II水溶液的氧化稳定性与配体性质之间的关系(见图)。这些 Eu II络合物之一在血红蛋白中比 Fe II更稳定,并且似乎是已知的氧化最稳定的水性 Eu II物质。Eu II的高稳定性有望在体内利用该离子独特的磁性和光学特性。
FORMATION AND USES OF EUROPIUM COMPLEXES
申请人:Allen Matthew J.
公开号:US20130078189A1
公开(公告)日:2013-03-28
The present invention provides a method of forming an oxidatively-stable aqueous Eu(II) complex by synthesizing ligands that coordinate to large, soft, electron rich metals like Eu(II). The invention also provides an oxidatively stable aqueous Eu(II) complex. The complex can be used for a variety of purposes some of which include, but are not limited to, in paramagnetic chemical exchange saturation transfer, as a medical diagnostic, as a semiconductor, and for use in forming materials.
IN VIVO DIFFERENTIATION OF RELATIVE OXYGEN LEVELS AND TUMOR NECROSIS USING DIVALENT EUROPIUM
申请人:WAYNE STATE UNIVERSITY
公开号:US20160263252A1
公开(公告)日:2016-09-15
A method of magnetic resonance imaging a target tissue in a subject includes a step of administering a first Eu
2+
-containing complex to the subject. The first Eu
2+
-containing complex has a reduction potential that is more negative than a reduction potential for a selected compound present in the target tissue. A first set of images of the target tissue in the subject is then taken by T
1
-weighted magnetic resonance imaging.