Navigation Links
Polymer membranes with molecular-sized channels that assemble themselves
Date:1/11/2011

Many futurists envision a world in which polymer membranes with molecular-sized channels are used to capture carbon, produce solar-based fuels, or desalinating sea water, among many other functions. This will require methods by which such membranes can be readily fabricated in bulk quantities. A technique representing a significant first step down that road has now been successfully demonstrated.

Researchers with the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley have developed a solution-based method for inducing the self-assembly of flexible polymer membranes with highly aligned subnanometer channels. Fully compatible with commercial membrane-fabrication processes, this new technique is believed to be the first example of organic nanotubes fabricated into a functional membrane over macroscopic distances.

"We've used nanotube-forming cyclic peptides and block co-polymers to demonstrate a directed co-assembly technique for fabricating subnanometer porous membranes over macroscopic distances," says Ting Xu, a polymer scientist who led this project. "This technique should enable us to generate porous thin films in the future where the size and shape of the channels can be tailored by the molecular structure of the organic nanotubes."

Xu, who holds joint appointments with Berkeley Lab's Materials Sciences Division and the University of California Berkeley's Departments of Materials Sciences and Engineering, and Chemistry, is the lead author of a paper describing this work, which has been published in the journal ACS Nano. The paper is titled "Subnanometer Porous Thin Films by the Co-assembly of Nanotube Subunits and Block Copolymers."

Co-authoring the paper with Xu were Nana Zhao, Feng Ren, Rami Hourani, Ming Tsang Lee, Jessica Shu, Samuel Mao, and Brett Helms, who is with the Molecular Foundry, a DOE nanoscience center hosted at Berkeley
'/>"/>

Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Syracuse University team develops functionally graded shape memory polymers
2. Industry honors plastics recycling and reactive polymer processing expert at NJIT
3. Radically simple technique developed to grow conducting polymer thin films
4. Nature Nanotechnology paper shows enzyme-controlled movement of DNA polymer through a nanopore
5. Polymer passage takes time
6. UM scientists demonstrate role of RNA polymerase in gene transcription
7. Pitt researcher says simple polymer-based filter successfully cleans water, recovers oil in Gulf of Mexico tests
8. Polymer-based filter successfully cleans water, recovers oil in Gulf of Mexico test
9. To improve lung cancer diagnosis, good medicine is a polymer pill
10. Multifunctional polymer neutralizes both biological and chemical weapons
11. How RNA polymerase II gets the go-ahead for gene transcription
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Polymer membranes with molecular-sized channels that assemble themselves
(Date:4/2/2015)... In the current eight ... the strongest competitors, showing outstanding performance in recognition ... is capable of a throughput of 5.000.000 fingerprints ... be ten times faster than most competitors and ...      (Photo: http://photos.prnewswire.com/prnh/20150402/738673-a ) , ...
(Date:4/2/2015)... Fingerprint Cards (FPC) has received ... the distributor World Peace Industrial Group (WPI), part of ... the major part of the shipments will take place ... smartphone manufacturers in China . The ... communicated revenue guidance of + 1 000 MSEK for 2015.  ...
(Date:3/31/2015)... , March 31, 2015  Elephant Talk Communications Corp. ... global provider of Software Defined Network Architecture (ET Software ... total revenue of approximately $20.4 million for the year ... $19.5 million for the year ended December 31, 2013. ... the Company had completed its multi-year transition away from ...
Breaking Biology News(10 mins):DERMALOG AFIS Emerges as Performance Winner in NIST Benchmark Test 2DERMALOG AFIS Emerges as Performance Winner in NIST Benchmark Test 3Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 110 Million 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6
... it,s not always the good-looker who gets the girl. In ... and stealth beat out colorful and refined almost every time. ... South American species of fish ( Poecilia parae ), which ... how the interplay between male mating strategies and predator behavior ...
... researchers have found that native pollinators, like wild bees ... as honey bees and that these viruses are transmitted ... in PLoS ONE, an online open-access journal for the ... This multi-institutional study provides new insights into viral infections ...
... To survive in a tumultuous environment, sea urchins literally eat ... the spiny creatures hide from predators and protect themselves from ... where they live. The rock-boring behavior is astonishing, scientists ... grinding and scraping on stone, urchin teeth never, ever get ...
Cached Biology News:SU scientists find that in the evolutionary mating game, brawn and stealth rule 2SU scientists find that in the evolutionary mating game, brawn and stealth rule 3Movement and threat of RNA viruses widespread in pollinator community 2Ever-sharp urchin teeth may yield tools that never need honing 2
(Date:4/30/2015)... , April 30, 2015  Asterias Biotherapeutics, Inc. ... emerging field of regenerative medicine, today announced that it ... Thursday, May 7, 2015 after the close of the ... call and webcast on Thursday, May 7, 2015 at ... the results and recent corporate developments. For ...
(Date:4/30/2015)... 2015 WuXi PharmaTech (Cayman) Inc. ("WuXi" or ... contract R&D services provider, today announced that its board ... dated April 29, 2015, from a consortium (the "Consortium") ... founder, chairman and chief executive officer of the Company, ... a transaction (the "Transaction") involving the acquisition of all ...
(Date:4/30/2015)... SAINT-MALO, FRANCE (PRWEB) April 30, 2015 ... States and at http://www.lespausa.com , Phytomer’s ... to sensitive and reactive skin while battling the ... inflammation. This restorative cream is formulated with star ... derived via biotechnology in a complex of soothing ...
(Date:4/30/2015)... Clinovo Staffing Solutions will ... held in Orlando, FL on May 17-20th, 2015. ... Leslie Kolman, Manager of Staffing Solutions, will present Clinovo’s ... Booth #17. , “We are excited to be ... Says Trisha Heredia, Senior Director of Staffing Solutions at ...
Breaking Biology Technology:Asterias Biotherapeutics to Report First Quarter Results on May 7, 2015 2Asterias Biotherapeutics to Report First Quarter Results on May 7, 2015 3WuXi PharmaTech Announces Receipt of Proposal 2WuXi PharmaTech Announces Receipt of Proposal 3WuXi PharmaTech Announces Receipt of Proposal 4WuXi PharmaTech Announces Receipt of Proposal 5WuXi PharmaTech Announces Receipt of Proposal 6Phytomer introduces DOUCEUR INTEMPORELLE Restorative Shield Cream 2Phytomer introduces DOUCEUR INTEMPORELLE Restorative Shield Cream 3Clinovo Exhibits at the 2015 PharmaSUG Annual Conference on May 17-20th in Orlando, FL 2Clinovo Exhibits at the 2015 PharmaSUG Annual Conference on May 17-20th in Orlando, FL 3
... BROOKFIELD, Wis.- Fiserv, Inc., an ATM and ... transfer network saw its volume increase more than 57% ... overall growth rate of 57% was tremendous and makes ... said Kevin Gregoire, Senior Vice President of Products and ...
... the great rock concert halls and rock festivals of the ... musical Meccas continues (mostly in the form of Farewell Tours ... wild 1980s and 1990s is celebrated every year in a ... lead the charge in promoting the hot biotech companies of ...
... outsourcing as an issue du jour. I stand corrected. ... year at that for America) due to slow job ... the U.S. Prominent voices along every point of the ... nomination to the Bush Administration and a host of ...
Cached Biology Technology:The Biotech Concert Halls of the Decade of 2000 2The Great Offshore Outsourcing Debate 2
... The Amplifluor UniPrimer-fluorescein is a hairpin ... transfer pair (fluorescein and non-fluorescent quencher) ... The UniPrimer is identical to ... Universal Detection System (S7901) and is ...
...
Mouse monoclonal antibody raised against a partial recombinant EBI3. NCBI Entrez Gene ID = EBI3...
... Model AS-2055 and AS-2057 are fully automatic ... highest possible level of precision. Sampling flexibility ... positions (microplate) for,laboratory automation and combinatorial chemistry. ... micro-vials or the standard rack for 50 ...
Biology Products: