Featured Research

from universities, journals, and other organizations

Rutgers Researchers Create Tiny Chemical Cages To Enclose Drug, Pesticide Molecules

Date:
January 25, 2006
Source:
Rutgers, the State University of New Jersey
Summary:
Tiny chemical cages created by Rutgers researchers show potential for delivering drugs to organs or tissues where they're needed and making pesticides less hazardous to handle. These cage-like molecules measure a mere 3.2 nanometers wide. Researchers have shown a way to securely link component molecules together in a cage using an efficient, one-step process.

A stick representation of a nanocontainer molecule.
Credit: Image courtesy of Ralf Warmuth

Tiny chemical cages created by researchers at Rutgers, The State University of New Jersey, show potential for delivering drugs to organs or tissues where they’re needed without causing harm elsewhere.

These cage-like molecules, called nanocontainers or nanoscale capsules because they measure a mere 3.2 nanometers (billionths of a meter) wide, also could make pesticides less hazardous to handle, filter toxic substances out of wastewater and regulate the pace of reactions in chemical production.

“While the concept of chemical cages is not new, we’ve created new components and advanced the assembly process to increase the chance that they’ll become practical,” said Ralf Warmuth, associate professor of chemistry and chemical biology at Rutgers and lead researcher. “We’ve shown a way to securely link molecules together in a cage using an efficient, one-step process.”

In an article slated for an upcoming issue of the chemistry journal Angewandte Chemie International Edition, now available on the journal’s Web site at www3.interscience.wiley.com/cgi-bin/fulltext/112223539/PDFSTART, Warmuth and colleagues describe how they’ve used common organic chemicals and straightforward techniques to create nanocontainers. These octahedral (eight-sided) capsules, with their cavity volume of almost two cubic nanometers, could enclose one or more molecules of a medicine, pesticide or intermediate in a chemical manufacturing process that, if left uncaged, might prematurely decay or interact with other substances in passing.

Previous techniques for assembling molecular cages involved tradeoffs. With one approach, the synthesis technique was straightforward, but the pieces of the molecular cages were not bound as tightly to each other. Another approach resulted in tighter bonds, but the process required several carefully orchestrated steps. The Rutgers advance is a one-step process that creates tight chemical bonds, surpassing earlier approaches in simplicity and efficiency.

The Rutgers process involves combining six larger bowl-shaped molecules with 12 smaller linear molecules, or bridges, that link the bowls together, insides facing each other. Atoms at four sites along each bowl’s rim bond to atoms on the ends of the bridges. The atomic structure and properties of these molecules ensure that they naturally assemble themselves into capsules and do so with high yield when combined in proper proportions. Early research suggests that the connections between the bridges and bowls can be broken and reattached under controlled conditions to introduce “payload” molecules – such as a drug or pesticide – into the cage and extract them when needed.

The Rutgers team consisted of Warmuth, chemistry graduate students Xuejun Liu and Yong Liu, and undergraduate student Gina Li. The work was funded by grants from the National Science Foundation.


Story Source:

The above story is based on materials provided by Rutgers, the State University of New Jersey. Note: Materials may be edited for content and length.


Cite This Page:

Rutgers, the State University of New Jersey. "Rutgers Researchers Create Tiny Chemical Cages To Enclose Drug, Pesticide Molecules." ScienceDaily. ScienceDaily, 25 January 2006. <www.sciencedaily.com/releases/2006/01/060124223607.htm>.
Rutgers, the State University of New Jersey. (2006, January 25). Rutgers Researchers Create Tiny Chemical Cages To Enclose Drug, Pesticide Molecules. ScienceDaily. Retrieved April 21, 2014 from www.sciencedaily.com/releases/2006/01/060124223607.htm
Rutgers, the State University of New Jersey. "Rutgers Researchers Create Tiny Chemical Cages To Enclose Drug, Pesticide Molecules." ScienceDaily. www.sciencedaily.com/releases/2006/01/060124223607.htm (accessed April 21, 2014).

Share This



More Matter & Energy News

Monday, April 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Why Did Nike Fire Most Of Its Nike FuelBand Team?

Why Did Nike Fire Most Of Its Nike FuelBand Team?

Newsy (Apr. 19, 2014) Nike fired most of its Digital Sport hardware team, the group behind Nike's FuelBand device. Could Apple or an overcrowded market be behind layoffs? Video provided by Newsy
Powered by NewsLook.com
Small Reactors Could Be Future of Nuclear Energy

Small Reactors Could Be Future of Nuclear Energy

AP (Apr. 17, 2014) After the Fukushima nuclear disaster, the industry fell under intense scrutiny. Now, small underground nuclear power plants are being considered as the possible future of the nuclear energy. (April 17) Video provided by AP
Powered by NewsLook.com
Horseless Carriage Introduced at NY Auto Show

Horseless Carriage Introduced at NY Auto Show

AP (Apr. 17, 2014) An electric car that proponents hope will replace horse-drawn carriages in New York City has also been revealed at the auto show. (Apr. 17) Video provided by AP
Powered by NewsLook.com
Honda's New ASIMO Robot, More Human-Like Than Ever

Honda's New ASIMO Robot, More Human-Like Than Ever

AFP (Apr. 17, 2014) It walks and runs, even up and down stairs. It can open a bottle and serve a drink, and politely tries to shake hands with a stranger. Meet the latest ASIMO, Honda's humanoid robot. Duration: 00:54 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins