Attaching double chain cationic Gd(iii)-containing surfactants on nanosized colloids for highly efficient MRI contrast agents
- Resource Type
- Authors
- Aiguo Hu; Yuan Yuan; Heng Yang; Xinhui Cui; Weijun Tang; Wei Wang; Xiangyu Chen; Yingying Chen
- Source
- Journal of materials chemistry. B. 1(40)
- Subject
- chemistry.chemical_classification
Materials science
Biomedical Engineering
Cationic polymerization
General Chemistry
General Medicine
Double chain
Miniemulsion
Colloid
chemistry.chemical_compound
Monomer
X-ray photoelectron spectroscopy
Polymerization
chemistry
Polymer chemistry
General Materials Science
Alkyl
- Language
- ISSN
- 2050-7518
A new Gd(III)-based metallosurfactant with double quaternary-ammonium-containing long alkyl chains was developed and subjected to the miniemulsion polymerization of vinyl monomers, giving nanosized colloids (50–110 nm) with narrow size distribution. The size of the colloid particles can be easily tuned by adjusting the feeding ratio of metallosurfactant to monomer. SEM and XPS analysis showed that the Gd(III) complexes were attached on the surface of the colloids. ICP-AES analysis further quantified the contents of Gd(III) in the miniemulsions. T1 magnetic resonance imaging (MRI) showed that these Gd(III)-loading colloids exhibited relaxivity of up to 22.77 mM−1 s−1, much higher than that of Ominiscan® (4.64 mM−1 s−1).