Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Polypyrrole Films Open New Window for Production of Ammonia Biosensors

Abstract:
Researchers from Tarbiat Modarres University used a doped polypyrrole nanostructured film as an optical nanosensor sensitive to ammonia gas.

Polypyrrole Films Open New Window for Production of Ammonia Biosensors

Tehran, Iran | Posted on January 19th, 2013

High selectivity of ammonia through a simple and cost-effective method with appropriate response time is among the advantages of this nanosensor, which enables its application in commercial and medical kits in order to measure the amount of ammonia in various samples.

In this research, the polypyrrole film doped with a dye is coated on polystyrene through chemical polymerization. Various parameters that affect the homogeneity, stability, and the change in the optical behavior of the film coated on the bed were optimized, and the changes in optical properties of the synthesized film were studied in the presence of ammonia in order to design the optical sensor.

The dye used in the nanosensor is a dopant and it contains acidic groups that can react with ammonia, which has alkaline properties, and it can change the color of the thin film in the dye adsorption wavelength.

Results of the research show that the produced sensor has acceptable selectivity and sensitivity to ammonia in comparison to the vapor of other amines such as methylamine and also to methanol, ethanol, acetonitrile, acetone, hexane, pyridine, and water.

Taking into consideration its low determination range and high response rate, this sensor can be used in medical industries in order to diagnose diseases. It can also be used in portable measurements due to its volume and its simple design.

Results of the research have been published in detail in Sensors and Actuators B: Chemical, vol. 176, pp. 761-767.

####

For more information, please click here

Copyright © Fars News Agency

If 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.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

FEI Launches Helios G4 DualBeam Series for Materials Science: The Helios G4 DualBeam Series features new capabilities to enable scientists and engineers to answer the most demanding and challenging scientific questions June 27th, 2016

Superheroes are real: Ultrasensitive nonlinear metamaterials for data transfer June 25th, 2016

Russian physicists create a high-precision 'quantum ruler': Physicists have devised a method for creating a special quantum entangled state June 25th, 2016

Nanoscientists develop the 'ultimate discovery tool': Rapid discovery power is similar to what gene chips offer biology June 25th, 2016

Nanomedicine

Nanoscientists develop the 'ultimate discovery tool': Rapid discovery power is similar to what gene chips offer biology June 25th, 2016

Nanotechnology and math deliver two-in-one punch for cancer therapy resistance June 24th, 2016

Self-assembling icosahedral protein designed: Self-assembling icosahedral protein designed June 22nd, 2016

Stealth nanocapsules kill Chagas parasites in mouse models June 22nd, 2016

Sensors

Researchers discover new chemical sensing technique: Technique allows sharper detail -- and more information -- with near infrared light June 24th, 2016

Artificial synapse rivals biological ones in energy consumption June 21st, 2016

A new form of hybrid photodetectors with quantum dots and graphene June 19th, 2016

Drum beats from a one atom thick graphite membrane June 15th, 2016

Discoveries

Superheroes are real: Ultrasensitive nonlinear metamaterials for data transfer June 25th, 2016

Russian physicists create a high-precision 'quantum ruler': Physicists have devised a method for creating a special quantum entangled state June 25th, 2016

Nanoscientists develop the 'ultimate discovery tool': Rapid discovery power is similar to what gene chips offer biology June 25th, 2016

Ultrathin, flat lens resolves chirality and color: Multifunctional lens could replace bulky, expensive machines June 25th, 2016

Announcements

FEI Launches Helios G4 DualBeam Series for Materials Science: The Helios G4 DualBeam Series features new capabilities to enable scientists and engineers to answer the most demanding and challenging scientific questions June 27th, 2016

Superheroes are real: Ultrasensitive nonlinear metamaterials for data transfer June 25th, 2016

Russian physicists create a high-precision 'quantum ruler': Physicists have devised a method for creating a special quantum entangled state June 25th, 2016

Nanoscientists develop the 'ultimate discovery tool': Rapid discovery power is similar to what gene chips offer biology June 25th, 2016

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic