HOME >> BIOLOGY >> NEWS
Modifications render carbon nanotubes nontoxic

HOUSTON, Oct. 26, 2005 -- In follow-on work to last year's groundbreaking toxicological study on water-soluble buckyballs, researchers at Rice University's Center for Biological and Environmental Nanotechnology (CBEN) find that water-soluble carbon nanotubes are significantly less toxic to begin with. Moreover, the research finds that nanotubes, like buckyballs, can be rendered nontoxic with minor chemical modifications.

The findings come from the first toxicological studies of water-soluble carbon nanotubes. The study, which is available online, will be published in an upcoming issue of the journal Toxicology Letters.

The research is a continuation of CBEN's pioneering efforts to both identify and mitigate potential nanotechnology risks.

"Carbon nanotubes are high-profile nanoparticles that are under consideration for dozens of applications in materials science, electronics and medical imaging," said CBEN Director Vicki Colvin, the lead researcher on the project. "For medical applications, it is reassuring to see that the cytotoxicity of nanotubes is low and can be further reduced with simple chemical changes."

Research has been conducted on the toxicity of carbon nanotubes, but CBEN's is the first to examine the cytotoxicity of water-soluble forms of the hollow carbon molecules. In their native state, carbon nanotubes are insoluble, meaning they are incompatible with the water-based environment of living systems. Solubility is a key issue for medical applications, and researchers at Rice and elsewhere have developed processing methods that render nanotubes soluble. In particular, scientists are keen to exploit the fluorescent properties of carbon nanotubes for medical diagnostics.

Nanotubes are long, hollow molecules of pure carbon with walls just one atom thick. They are related to buckyballs, tiny spheres of pure carbon that are about the same diameter.

In previous studies with buckyballs, CBEN found that even mino
'"/>

Contact: Jade Boyd
jadeboyd@rice.edu
713-348-6778
Rice University
26-Oct-2005


Page: 1 2 3

Related biology news :

1. Green tea boosts production of detox enzymes, rendering cancerous chemicals harmless
2. Nature surrenders flowery secrets to international team
3. Dominant meerkats render rivals infertile
4. New study warns limited carbon market puts 20 percent of tropical forest at risk
5. Experiment suggests limitations to carbon dioxide tree banking
6. Decoding mushrooms secrets could combat carbon, find better biofuels and safer soils
7. Scientists close in on missing carbon sink
8. Human activities increasing carbon sequestration in forests
9. Researchers examine carbon capture and storage to combat global warming
10. Soils offer new hope as carbon sink
11. Before selling carbon credits, read this

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Modifications render carbon nanotubes nontoxic

(Date:8/20/2014)... of 158 pregnant teenagers in Rochester, NY, nearly half ... of ice, cornstarch, vacuum dust, baby powder and soap, ... , Moreover, such teens had significantly lower iron levels ... substances. , Pregnant teens, regardless of pica, are at ... iron deficiency and anemia. Low iron in pregnant teens ...
(Date:8/20/2014)... , Aug. 20, 2014 /CNW/ -  Issue ... and can quickly become life threatening for some children.    ... as 1.2 million Canadians have food allergies and this number ... cent of children are estimated to have food allergies.  ... mild skin irritations and hives to breathing difficulties and loss ...
(Date:8/20/2014)... WORCESTER, MA Using population-based screening outcomes of approximately ... states, including four researchers at the University of Massachusetts ... combined immunodeficiency (SCID) can be successfully implemented across public ... programs published in the Aug. 20 issue of the ... JAMA ) showed the rate of SCID in newborns ...
Breaking Biology News(10 mins):Pica in pregnant teens linked to low iron 2Information Update - Allergens and food safety at school - What's in your child's lunch? 2Information Update - Allergens and food safety at school - What's in your child's lunch? 3Newborn screening expansion offers early diagnosis and treatment to infants with SCID 2Newborn screening expansion offers early diagnosis and treatment to infants with SCID 3
(Date:8/19/2014)... , Aug. 19, 2014 CSSi, the leader ... recently announced the formation of the company,s Medical and ... the addition of Dr. William E. Gannon, Jr. ... http://photos.prnewswire.com/prnh/20140818/136957 The MCAB, with Dr. ... of therapeutic areas and set strategic goals for the ...
(Date:8/19/2014)... 19, 2014 /PRNewswire/ - iCo Therapeutics Inc. ("iCo" or ... results of its Oral Amphotericin B (Oral Amp ... study, conducted by ImmuneCarta®, the immune monitoring business ... effectiveness of Oral Amp B in reactivating latent ... despite intensive treatment with antiretroviral therapy. ...
(Date:8/18/2014)... Tampa, FL (Aug. 18, 2014) -- A new ... South Florida (USF) Morsani College of Medicine and ... the life-threatening complications of interventional cardiovascular disease treatment. ... model that the novel molecular therapy could selectively ... healing following a medical procedure using a balloon ...
(Date:8/18/2014)... Aug. 18, 2014   Sterne, Kessler, Goldstein & ... Washington, DC , announced today that ... Review (IPR) with the U.S. Patent and Trademark ... of BioReference Laboratories, Inc. (Nasdaq: BRLI).  These IPR petitions ... by Myriad Genetics, Inc. These patents have been asserted ...
Breaking Biology Technology:CSSi Appoints Dr. William E. Gannon, Jr. to Newly Formed Medical and Clinical Advisory Board 2CSSi Appoints Dr. William E. Gannon, Jr. to Newly Formed Medical and Clinical Advisory Board 3iCo Therapeutics Announces Positive Oral Amphotericin B Study Results 2iCo Therapeutics Announces Positive Oral Amphotericin B Study Results 3Selective therapy may improve artery repair after interventional cardiovascular procedures 2Selective therapy may improve artery repair after interventional cardiovascular procedures 3Sterne Kessler Files 11 IPR Petitions On Behalf Of GeneDx, Inc., Subsidiary Of BioReference Laboratories, Inc. 2Sterne Kessler Files 11 IPR Petitions On Behalf Of GeneDx, Inc., Subsidiary Of BioReference Laboratories, Inc. 3
Cached News: