Facile fabrication and magnetic properties of a one-dimensional magnetite peapod in a lipid nanotube.

ACS Appl Mater Interfaces

Nanotube Research Center (NTRC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.

Published: May 2012

Magnetite nanoclusters (MNCs) were aligned one-dimensionally in the hollow cavity of a lipid nanotube (LNT) as a peapod using a simple mixing method in an aqueous solution. The electrostatic interaction of the two materials was considerable enough to allow the preparation of a densely packed MNC-LNT peapod composite. The composite was formed at a pH 5.4-6.8, i.e., near the isoelectric point of the MNCs. At a pH 5.4-6.8, there was neither a strong attractive nor repulsive electrostatic interaction between the surface of the MNC and the LNT. The MNCs-capped LNT composites were formed at basic conditions (above a pH 7.8) in which the MNCs and the LNT pushed each other because of their opposite surface charges. The magnetic property measurement revealed that the 1D aligned MNCs in the peapod structure had a much higher coercivity (10.6 Oe) than the bulk randomized MNCs (5.8 Oe).

Download full-text PDF

Source
http://dx.doi.org/10.1021/am300122fDOI Listing

Publication Analysis

Top Keywords

lipid nanotube
8
electrostatic interaction
8
mncs
5
facile fabrication
4
fabrication magnetic
4
magnetic properties
4
properties one-dimensional
4
one-dimensional magnetite
4
peapod
4
magnetite peapod
4

Similar Publications

This study investigated the effect of various levels of OH-MWCNTs mediated seed priming on germination, growth, and biochemical responses of Indian mustard (Brassica juncea (L.) Czern. & Coss.

View Article and Find Full Text PDF

Rapid diagnosis of cerebrospinal fluid (CSF) leaks is critical as endoscopic endonasal skull base surgery gains global prominence. Current clinical methods such as endoscopic examination with and without intrathecal injection of fluorescent dye are invasive and rely on subjective judgment by physicians, highlighting the clinical need for label-free point-of-care (POC). However, a viable solution remains undeveloped due to the molecular complexity of CSF rhinorrhea mixed with nasal discharge and the scarcity of specific biomarkers, delaying sensor development.

View Article and Find Full Text PDF

Galactocerebroside Lipid Nanotubes, a Model Membrane System for Studying Membrane-Associated Proteins on a Molecular Scale.

Methods Mol Biol

December 2024

Institut Curie, Université PSL, Sorbonne Université, CNRS UMR168, Laboratoire Physique des Cellules et Cancer, Paris, France.

Galactocerebroside lipid nanotubes are membrane-mimicking systems for studying the function and structure of proteins involved in membrane shape remodeling, such as in intracellular trafficking, cell division, and migration or involved in the formation of membrane contact sites. They exhibit a constant and small diameter of 30 nm and a length of up to 2 μm. They can be functionalized with lipid ligands, providing a large binding surface for protein without membrane shape remodeling.

View Article and Find Full Text PDF

The ETS domain-containing hematopoietic transcription factor PU.1 mediates the induction of arachidonate 5-lipoxygenase by multi-walled carbon nanotubes in macrophages in vitro.

Arch Toxicol

December 2024

Receptor Biology Laboratory, Toxicology and Molecular Biology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV, 26505, USA.

Exposure to fibrogenic multi-walled carbon nanotubes (MWCNTs) induces the production of proinflammatory lipid mediators (LMs) in myeloid cells to instigate inflammation. The molecular underpinnings of LM production in nanotoxicity remain unclear. Here we report that PU.

View Article and Find Full Text PDF

Transdermal drug delivery systems (TDDS) have emerged as a popular non-invasive approach for treating skin-related disorders, offering quick and reliable drug delivery into the skin, thereby accelerating therapeutic efficacy. In India, there is a growing interest in TDDS due to its perceived safety and effectiveness. Researchers are actively developing new formulations and technologies to enhance drug delivery efficiency and reduce side effects.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!