- About Us
- Nano-Social Network
- Nano Consulting
- My Account
We take "self-assembly" for granted when it is carried out by the biopolymers which comprise our hair, teeth, or skin. But when scientists devise new ways for molecules to self-assemble into new materials, it is an important achievement.
Researchers with the Macromolecules and Interfaces Institute (MII) at Virginia Tech report such a development in the online issue of the Journal of the American Chemical Society in the article, "Aggregation of Rod-Coil Block Copolymers Containing Rigid Polyampholyte Blocks in Aqueous Solution" (10.1021/ja070422+ http://dx.doi.org/10.1021/ja070422+ ) and at the 233rd National Meeting of the American Chemical Society (ACS) in Chicago, March 25-29.
S. Richard Turner, MII director and research professor of chemistry at Virginia Tech, and Min Mao, a Ph.D. candidate in polymer chemistry, report the synthesis of a new family of charged, rod-like block copolymers. No longer than a fraction of the diameter of human hair, the tiny rods can be either positive or negative, or can have alternating positive and negative charges along the backbone. The rods self-assemble and the aggregated structures are remarkably stable in saline solution, Turner said.
"The early results of this study suggest that these charged polymers self-assemble by like-charge interactions similar to such natural polymers as DNA," said Turner. "The stable self-assembled structures could have potential applications in drug delivery and gene delivery systems."
But more immediate, "These unique block copolymers can be instructive models in understanding the forces that lead to the dense packing of DNA when complexed with viruses and other polymers," he said.
The ACS poster, "Stimulus Responsive Aggregation in Aqueous Solution of a Novel Rod-Coil Type Double Hydrophilic Block Copolymer Containing Rigid Strictly Alternating Polyampholytes" (PMSE 314), will be presented from 6 to 8 p.m. on Tuesday, March 27, at the Hyatt Regency Chicago Riverside Center as part of the joint PMSE-Polymer poster session.
Mao, who is a graduate research assistant in polymer chemistry and physics, received his bachelor of science in chemistry and master of science in surfactant, colloid, and surface science from Peking University, Beijing,
The research is supported by the Department of Chemistry at Virginia Tech and a grant from the ACS Petroleum Research Fund.
About Virginia Tech
Founded in 1872 as a land-grant college named Virginia Agricultural and Mechanical College, Virginia Tech is now a comprehensive, innovative research university with the largest full-time student population in Virginia. Through a combination of its three missions of learning, discovery, and engagement, Virginia Tech continually strives to accomplish the charge of its motto: Ut Prosim (That I May Serve).
For more information, please click here
Copyright © Virginia TechIf 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.
|Related News Press|
Nanotubes that build themselves April 14th, 2017
Nanocages for gold particles: what is happening inside? March 16th, 2017
Molecular phenomenon discovered by advanced NMR facility: Cutting edge technology has shown a molecule self-assembling into different forms when passing between solution state to solid state, and back again - a curious phenomenon in science - says research by the University of Wa February 22nd, 2017
National Conference on Nanomaterials, (NCN-2017) April 21st, 2017
Nanomechanics, Inc. Unveils New Product at ICMCTF Show April 25th: Nanoindentation experts will launch the new Gemini that measures the interaction of two objects that are sliding across each other – not merely making contact April 21st, 2017
Forge Nano 2017: 1st Quarter Media Update April 20th, 2017