Featured Research

from universities, journals, and other organizations

Mechanically Interlocked Molecules Dress For Success

Date:
September 27, 2006
Source:
John Wiley & Sons, Inc.
Summary:
A team of British and American researchers led by J. F. Stoddart have developed a whole new family of mutually interlocked molecules, which they termed "suitanes," and generated a first example.

An enormous challenge to science is the generation of two individual molecules that are not chemically bound to each other but are mechanically wedged together to form a tight link. A team of British and American researchers have now developed a whole new family of such mutually interlocked molecules and generated a first example.

Related Articles


The researchers have named these novel compounds “suitanes”, based on their resemblance to a torso with two or more limbs that is completely enveloped in a one-piece “suit”. The number of limbs is indicated by a number inserted into the name of the compound: A suit[2]ane has two limbs, a suit[3]ane has three limbs, and a suit[4]ane has four limbs. “A suit[5]ane looks like a doll wearing a one-piece romper enclosing all five limbs: two legs, two arms, and the head,” explains J. Fraser Stoddart, a pioneer of supramolecular chemistry.

The team headed by Stoddart (University of California, Los Angeles) and David J. Williams (Imperial College, London) have successfully synthesized the simplest representative of this class of compounds: a suit[2]ane. They first used computer simulations to develop a plan of attack. The inner molecule—the “body”—should be relatively stiff and oblong; the suit must be a flexible molecule that can be assembled around the body from a few individual components. Like a well-tailored suit, all of the individual components must be perfectly coordinated with each other regarding their shape, size, and functional groups.

The researchers first produced a stiff, linear molecular framework: a slim center (a central aromatic ring) is hooked to two bulging “shoulders” (anthracene ring systems), each in turn attached to an “arm”.

Next, the molecule was dressed in its suit. The suit was put on piece by piece and “sewed” together in a final step: in a self-organization process, two large ring-shaped molecules (crown ethers) slipped like sleeves onto the molecular “arms”. The torso, arms, and sleeves were chemically outfitted to provide strong interactions to hold the sleeves tightly in place.

In the next step, another smaller type of molecule (aromatic ring) was added. These molecules each contained two groups of atoms (amino groups), located across from each other, designed to each enter into attractive interactions with one spot on each sleeve.

In the final step, chemical bonds were formed at these four points of contact; the aromatic rings thus linked the two sleeves into a single large molecule that completely encloses the torso molecule without binding to it chemically.

"Discovering the way to dress a molecule with another one is a prelude to constructing artificial systems reminiscent of the living cell," says Stoddart.


Story Source:

The above story is based on materials provided by John Wiley & Sons, Inc.. Note: Materials may be edited for content and length.


Cite This Page:

John Wiley & Sons, Inc.. "Mechanically Interlocked Molecules Dress For Success." ScienceDaily. ScienceDaily, 27 September 2006. <www.sciencedaily.com/releases/2006/09/060926104431.htm>.
John Wiley & Sons, Inc.. (2006, September 27). Mechanically Interlocked Molecules Dress For Success. ScienceDaily. Retrieved January 26, 2015 from www.sciencedaily.com/releases/2006/09/060926104431.htm
John Wiley & Sons, Inc.. "Mechanically Interlocked Molecules Dress For Success." ScienceDaily. www.sciencedaily.com/releases/2006/09/060926104431.htm (accessed January 26, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Monday, January 26, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Obama Reveals Nuclear Breakthrough on Landmark India Trip

Obama Reveals Nuclear Breakthrough on Landmark India Trip

Reuters - News Video Online (Jan. 25, 2015) — In a glow of bonhomie, U.S. President Barack Obama and Indian Prime Minister Narendra Modi unveil a deal aimed at unlocking billions of dollars in nuclear trade. Pavithra George reports. Video provided by Reuters
Powered by NewsLook.com
NTSB: Missing Planes' Black Boxes Should Transmit Wirelessly

NTSB: Missing Planes' Black Boxes Should Transmit Wirelessly

Newsy (Jan. 23, 2015) — In light of high-profile plane disappearances in the past year, the NTSB has called for changes to make finding missing aircraft easier. Video provided by Newsy
Powered by NewsLook.com
Iconic Metal Toy Meccano Goes Robotic

Iconic Metal Toy Meccano Goes Robotic

Reuters - Innovations Video Online (Jan. 22, 2015) — Classic children&apos;s toy Meccano has gone digital, releasing a programmable kit robot that can be controlled by voice recognition. The toymakers say Meccanoid G15 KS is easy to use and is compatible with existing Meccano pieces. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com
The VueXL From VX1 Immersive Smartphone Headset!

The VueXL From VX1 Immersive Smartphone Headset!

Rumble (Jan. 22, 2015) — The VueXL from VX1 is a product that you install your smartphone in and with the magic of magnification lenses, enlarges your smartphones screen so that it&apos;s like looking at a big screen TV. Check it out! Video provided by Rumble
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:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

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