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Tuning magnetic relaxation properties of 'hard cores' in core-shell colloids by modification of 'soft shell'
- Source :
- Colloids and Surfaces B: Biointerfaces. 162:52-59
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- The present work introduces an impact of polyelectrolyte-based hydrophilic shell on magnetic relaxivity and luminescence of hard cores built from isostructural complexes of Tb(III) and Gd(III) in the core-shell aqueous colloids. Microscopic and scattering techniques reveal "plum pudding" morphology of the colloids, where polyelectrolyte-coated ultrasmall (5nm) hard cores form aggregates in aqueous solutions. Interaction of bovine serum albumin (BSA) with the colloids provides a tool to modify the polyelectrolyte-based shell, which is the reason for the improvement in both aggregation behavior of the colloids and their relaxivity. The modification of the hydrophilic polyelectrolyte-based shell enables to tune the longitudinal relaxivity from 5.9 to 23.3mM
- Subjects :
- Luminescence
Materials science
Cell Survival
Shell (structure)
Contrast Media
Gadolinium
Nanotechnology
02 engineering and technology
010402 general chemistry
01 natural sciences
Cell Line
Colloid
Colloid and Surface Chemistry
Magnetic relaxation
Colloids
Physical and Theoretical Chemistry
Isostructural
Terbium
Aqueous solution
Scattering
Serum Albumin, Bovine
Surfaces and Interfaces
General Medicine
Fibroblasts
021001 nanoscience & nanotechnology
Magnetic Resonance Imaging
Polyelectrolytes
Polyelectrolyte
0104 chemical sciences
Solutions
Chemical physics
0210 nano-technology
Hydrophobic and Hydrophilic Interactions
Biotechnology
Subjects
Details
- ISSN :
- 09277765
- Volume :
- 162
- Database :
- OpenAIRE
- Journal :
- Colloids and Surfaces B: Biointerfaces
- Accession number :
- edsair.doi.dedup.....4934c43457edddf70ce84c80ede44bc4
- Full Text :
- https://doi.org/10.1016/j.colsurfb.2017.10.070