Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > Diacetylene-Containing Ligand As a New Capping Agent for the Preparation of Water-Soluble Colloidal Nanoparticles of Remarkable Stability

Abstract:
Dr. Antonios G. Kanaras and co-workers from the University of Southampton reported a new approach to create colloidal nanoparticles of remarkable stability resistant to pH changes, temperature, and ionic strength variations as well as ligand-exchange reactions.

Diacetylene-Containing Ligand As a New Capping Agent for the Preparation of Water-Soluble Colloidal Nanoparticles of Remarkable Stability

UK | Posted on June 4th, 2010

"Our technology holds a great promise to solve the long-standing problem of nanoparticle stability and open-up new avenues in biomedical applications that employ nanoparticles" Kanaras says.

The article was published at the ACS Journal Langmuir (pubs.acs.org/doi/abs/10.1021/la9044013)and describes a new type of ligand that can be used as a monomer to first coat the nanoparticles and then photo-polymerized upon UV-irradiation, embedding the particles in a stable organic shell. The ligand consists of an anchoring thiol group, which binds directly to the nanocrystal surface and two units, one hydrophobic and one hydrophilic. The hydrophobic alkyl unit contains a diacetylene group, which undergoes a 1,4-topochemical polymerization leading to a poly(enyne) structure during UV-irradiation. The hydrophilic unit contains an oligo-ethylene glycol chain, which ensures water solubility, and a terminal carboxylic group.

It is anticipated that the reported technology will be adopted to coat and other types of nanoparticles such as the famous 'quantum dots'.

####

For more information, please click here

Contacts:
Antonios Kanaras

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Engineering piezoelectricity and strain sensitivity in CdS to promote piezocatalytic hydrogen evolution May 13th, 2022

New nanomechanical oscillators with record-low loss May 13th, 2022

Small microring array enables large complex-valued matrix multiplication May 13th, 2022

Study finds nanomedicine targeting lymph nodes key to triple negative breast cancer treatment: In mice, nanomedicine can remodel the immune microenvironment in lymph node and tumor tissue for long-term remission and lung tumor elimination in this form of metastasized breast cance May 13th, 2022

Possible Futures

Engineering piezoelectricity and strain sensitivity in CdS to promote piezocatalytic hydrogen evolution May 13th, 2022

New nanomechanical oscillators with record-low loss May 13th, 2022

Small microring array enables large complex-valued matrix multiplication May 13th, 2022

Study finds nanomedicine targeting lymph nodes key to triple negative breast cancer treatment: In mice, nanomedicine can remodel the immune microenvironment in lymph node and tumor tissue for long-term remission and lung tumor elimination in this form of metastasized breast cance May 13th, 2022

Materials/Metamaterials

When a band falls flat: Searching for flatness in materials: International collaboration, led by DIPC and Princeton, creates a catalogue of materials that could impact quantum technologies April 1st, 2022

Studying atomic structure of aluminum alloys for manufacturing modern aircraft March 25th, 2022

Unexplored dimensions of porous metamaterials: Researchers unlock hidden potential in a long-studied group of materials March 18th, 2022

Copper doping enables safer, cost-effective hydrogen peroxide production February 11th, 2022

Announcements

Engineering piezoelectricity and strain sensitivity in CdS to promote piezocatalytic hydrogen evolution May 13th, 2022

New nanomechanical oscillators with record-low loss May 13th, 2022

Small microring array enables large complex-valued matrix multiplication May 13th, 2022

Study finds nanomedicine targeting lymph nodes key to triple negative breast cancer treatment: In mice, nanomedicine can remodel the immune microenvironment in lymph node and tumor tissue for long-term remission and lung tumor elimination in this form of metastasized breast cance May 13th, 2022

Quantum Dots/Rods

Development of a single-process platform for the manufacture of graphene quantum dots: Precisely controls the bonding configuration of heteroatoms in graphene quantum dots through simple chemical processes. Practical application and commercialization in various fields is expected December 3rd, 2021

New substance classes for nanomaterials: Nano spheres and diamond slivers made of silicon and germanium: Potential applications as nano semiconductor materials September 10th, 2021

‘Missing jigsaw piece’: engineers make critical advance in quantum computer design August 20th, 2021

Pushing the boundaries of colloidal quantum dots by making their sizes equal: Scientists demonstrate the relationship between optoelectronic performance and size uniformity in perovskite colloidal quantum dots June 25th, 2021

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project