Dysprosium Complexes and Their Micelles as Potential Bimodal Agents for Magnetic Resonance and Optical Imaging
作者:Elke Debroye、Sophie Laurent、Luce Vander Elst、Robert N. Muller、Tatjana N. Parac-Vogt
DOI:10.1002/chem.201302418
日期:2013.11.18
pentaacetic acid (DTPA) bisamide derivatives functionalized with p‐toluidine (DTPA‐BTolA), 6‐aminocoumarin (DTPA‐BCoumA), 1‐naphthalene methylamine (DTPA‐BNaphA), 4‐ethynylaniline (DTPA‐BEthA), p‐dodecylaniline (DTPA‐BC12PheA) and p‐tetradecyl‐aniline (DTPA‐BC14PheA) were coordinated to dysprosium(III) and the magnetic and optical properties of the complexes were examined in detail. The complexes consisting
Micellar self-assemblies of gadolinium(iii)/europium(iii) amphiphilic complexes as model contrast agents for bimodal imaging
作者:Elke Debroye、Svetlana V. Eliseeva、Sophie Laurent、Luce Vander Elst、Robert N. Muller、Tatjana N. Parac-Vogt
DOI:10.1039/c3dt52842a
日期:——
distribution (33–40 nm) were prepared by the assembly of the amphiphiliccomplexes with phospholipid DPPC and a surfactant Tween 80®. Taking into account the sensitivity difference between magneticresonance and optical imaging techniques, the ratios of Gd and Eu complexes (Gd/Eu) 1 : 1, 2 : 1, 3 : 1, 20 : 1 and 50 : 1 were combined in one single micelle and their optical and relaxometric properties
描述了用对十二烷基苯胺和对十四烷基苯胺官能化的两种新型DTPA双酰胺衍生物DTPA-BC 12 PheA和DTPA-BC 14 PheA的合成和表征。配体与Gd(III)和Eu(III)配位,分别产生高度顺磁性和发光配合物。由Gd / Eu-DTPA-BC 12 PheA和DTPA-BC 14组成的混合胶束通过将两亲性配合物与磷脂DPPC和表面活性剂Tween80®组装,可以制备出具有均一尺寸分布(33–40 nm)的PheA。考虑到磁共振和光学成像技术之间的灵敏度差异,将Gd和Eu配合物的比例(Gd / Eu)1:1、2:1、3:1、20:1和50:1合并为一个对胶束及其光学和弛豫特性进行了详细表征。在290 nm激发后,由于Eu(III)的5 D 0 → 7 F J(J = 0–4)跃迁,胶束显示出特征性的红色发射带。Eu(III)的第一个配位域中的水分子数)(q Eu = 0.1–0
Magnetofluorescent Nanoaggregates Incorporating Terbium(III) Complexes as Potential Bimodal Agents for Magnetic Resonance and Optical Imaging
作者:Michael Harris、Sophie Carron、Luce Vander Elst、Sophie Laurent、Tatjana N. Parac‐Vogt
DOI:10.1002/ejic.201500310
日期:2015.9
Terbium(III) ions were coordinated to two diethylenetriaminepentaacetic acid (DTPA) amphiphilic bisamide ligands, and the complexes were assembled into micellar nanoaggregates. The magnetic and optical properties of the resulting nanoaggregates were examined in detail. Upon excitation into the ligand levels at 265 nm, the complexes show characteristic TbIII emission at 546 nm with quantum yields of