Self assembled nanoparticulate Co:Pt for data storage applications

Warne, Barnaby; Kasyutich, O. I.; Mayes, Eric; Wiggins, J.; Wong, Kim K. W.

doi:10.1109/20.908658

Cited by 101 publications

(69 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is presumably due to a directing electrostatic influence of the protein concentrating cations on the interior, which ultimately allows for spatially selective ZnSe particle formation inside the cage. [45] Metallic nanoparticles such as Pd, [46] Ag, [47] and CoPt [48] have also been synthesized within ferritin by pre-incubation of the protein with a metal salt and subsequent chemical reduction by a strong reducing agent (such as NaBH 4 ). The synthesis of ferritin-encapsulated Ag nanoparticles utilized a powerful combination of biomimetic strategies combining protein-cage encapsulation and selective nucleation by specific phage-display peptides.…”

Section: The Ferritin Family Of Proteins: Interiormentioning

confidence: 99%

Biological Containers: Protein Cages as Multifunctional Nanoplatforms

Uchida¹,

Klem²,

Allen³

et al. 2007

Advanced Materials

536

518

View full text Add to dashboard Cite

Materials scientists increasingly draw inspiration from the study of how biological systems fabricate materials under mild synthetic conditions by using self‐assembled macromolecular templates. Containerlike protein architectures such as viral capsids and ferritin are examples of such biological templates. These protein cages have three distinct interfaces that can be synthetically exploited: the interior, the exterior, and the interface between subunits. The subunits that comprise the building blocks of these structures can be modified both chemically and genetically in order to impart designed functionality to different surfaces of the cage. Therefore, the cages possess a great deal of synthetic flexibility, which allows for the introduction of multifunctionality in a single cage. In addition, hierarchical assembly of the functionalized cages paves the way for development of a new class of materials with a wide range of applications from electronics to biomedicine.

show abstract

Section: The Ferritin Family Of Proteins: Interiormentioning

confidence: 99%

Biological Containers: Protein Cages as Multifunctional Nanoplatforms

Uchida¹,

Klem²,

Allen³

et al. 2007

Advanced Materials

536

518

View full text Add to dashboard Cite

show abstract

“…Biomineralization of other metals (i.e., Co [9,11], Mn [12][13][14], Ni [15], and Pd [16]), semiconductors (CdS) [17], and metal-oxo-anions composites [18] into the ferritin cavity has also been reported. Wong et al demonstrated the magnetic transition from superparamagnetic to ferromagnetic CoPt cored ferritin [19][20]. Tetrachloroplatinate anion was moved to the ferritin core and fabricated to Pt nanoparticles by chemical reduction.…”

Section: Introductionmentioning

confidence: 99%

Electrochemically controlled reconstitution of immobilized ferritins for bioelectronic applications

Kim

Choi

Lillehei

et al. 2007

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

“…There are growing interests on the research and, in many cases, the interests are based on the potential applications in the fields, e.g. magnetic data storage [1,2], magnetic resonance imaging (MRI) contrast agent [3], hyperthermal heating [4,5]. etc.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Anisotropy Energy Distribution and Magnetization of CoPt Nanoparticles Encaged in Protein Shell

Lee¹,

Suh²,

Jang³

2017

Journal of Magnetics

View full text Add to dashboard Cite

Magnetic properties of CoPt nanoparticles (average size = 2.1 nm) encapsulated in synthesized protein shell have been investigated with SQUID (Superconducting Quantum Interference Device) magnetometer and analyzed by the recently developed non-equilibrium magnetization calculation by our group [T. H. Lee et al., Phys. Rev. B 90, 184411 (2014)]. Field dependence of magnetization measured at 2 K was successfully analyzed with modified Langevin function. In addition, small hysteresis loops having the coercive field of 890 Oe were observed at 2 K. Temperature dependence of magnetization has been measured with zero field cooled (ZFC) and field cooled (FC) protocol with slightly modified sequence in accordance with non-equilibrium magnetization calculation. The analysis on the M vs. T data revealed that the anisotropy energy barrier distribution is found to be very different from the log-normal distribution found in a size distribution. Zero temperature coercive field and Bloch coefficient have also been extracted from the analysis and the validity of those values is checked.

show abstract

Self assembled nanoparticulate Co:Pt for data storage applications

Cited by 101 publications

References 14 publications

Biological Containers: Protein Cages as Multifunctional Nanoplatforms

Biological Containers: Protein Cages as Multifunctional Nanoplatforms

Electrochemically controlled reconstitution of immobilized ferritins for bioelectronic applications

Magnetic Anisotropy Energy Distribution and Magnetization of CoPt Nanoparticles Encaged in Protein Shell

Contact Info

Product

Resources

About