Stimuli-Responsive Particle-Based Amphiphiles as Active Colloids Prepared by Anisotropic Click Chemistry

Angewandte Chemie
Cornelia LanzSebastian Polarz

Abstract

Amphiphiles alter the energy of surfaces, but the extent of this feature is typically constant. Smart systems with amphiphilicity as a function of an external, physical trigger are desirable. As a trigger, the exposure to a magnetic field, in particular, is attractive because it is not shielded in water. Amphiphiles like surfactants are well known, but the magnetic response of molecules is typically weak. Vice-versa, magnetic particles with strong response to magnetic triggers are fully established in nanoscience, but they are not amphiphilic. In this work colloids with Janus architecture and ultra-small dimensions (25 nm) have been prepared by spatial control over the thiol-yne click modification of organosilica-magnetite core-shell nanoparticles. The amphiphilic properties of these anisotropically modified particles are proven. Finally, a pronounced and reversible change in interfacial stabilization results from the application of a weak (<1 T) magnetic field.

References

Aug 31, 2006·Journal of the American Chemical Society·Meghann A WhiteNicholas J Turro
Nov 1, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Liang HongSteve Granick
Feb 6, 2007·Angewandte Chemie·An-Hui LuFerdi Schüth
Jul 10, 2007·Nature Materials·Zhihong NieMichael Rubinstein
Jul 17, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Allison M YakeDarrell Velegol
Feb 1, 2008·Nature·Dmytro NykypanchukOleg Gang
Oct 22, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Kai P YuetPatrick S Doyle
Feb 19, 2010·Angewandte Chemie·Charles E Hoyle, Christopher N Bowman
Apr 20, 2010·Journal of the American Chemical Society·Andreas Kuschel, Sebastian Polarz
Aug 9, 2011·Nature Materials·Jiyun KimSunghoon Kwon
Jan 17, 2012·Accounts of Chemical Research·Chao WangXi Zhang
Nov 21, 2012·Nanoscale·Kathrin E PeyerBradley J Nelson
Jul 15, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·E Passas-Lagos, F Schüth
May 7, 2016·Journal of the American Chemical Society·Mingjun XuanQiang He
Jul 6, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Jie ZhangSteve Granick
Aug 2, 2017·Chemical Society Reviews·Jie ZhangSteve Granick
Oct 3, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Kwahun Lee, Yan Yu

❮ Previous
Next ❯

Methods Mentioned

BETA
NMR
electron microscopy
dynamic light scattering

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Chemical Society Reviews
Dennis W P M Löwik, Jan C M van Hest
Biochimica Et Biophysica Acta
A J Wicken, K W Knox
Advances in Colloid and Interface Science
M CortiP Salina
Progress in Clinical and Biological Research
A PradoF M Goñi
© 2021 Meta ULC. All rights reserved