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

Small but heading for the big time: Nanobiotix half year results for the six months ended 30 June 2015, in line with expectations: Major clinical achievements and corporate developments August 28th, 2015

A new technique to make drugs more soluble August 28th, 2015

Nanocatalysts improve processes for the petrochemical industry August 28th, 2015

Nanolab Technologies LEAPS Forward with High-Performance Analysis Services to the World: Nanolab Orders Advanced Local Electrode Atom Probe (LEAP®) Microscope from CAMECA Unit of AMETEK Materials Analysis Division August 27th, 2015

Nanomedicine

Small but heading for the big time: Nanobiotix half year results for the six months ended 30 June 2015, in line with expectations: Major clinical achievements and corporate developments August 28th, 2015

A new technique to make drugs more soluble August 28th, 2015

These microscopic fish are 3-D-printed to do more than swim: Researchers demonstrate a novel method to build microscopic robots with complex shapes and functionalities August 26th, 2015

Glitter from silver lights up Alzheimer's dark secrets August 25th, 2015

Sensors

Successful boron-doping of graphene nanoribbon August 27th, 2015

Nanotechnology that will impact the Security & Defense sectors to be discussed at NanoSD2015 conference August 25th, 2015

High Precision, High Stability XYZ Microscope Stages, with Capacitive Feedback August 18th, 2015

Setting ground rules for nanotechnology research: Two new projects set the stage for nanotechnology research to move into Big Data August 18th, 2015

Discoveries

A new technique to make drugs more soluble August 28th, 2015

Nanocatalysts improve processes for the petrochemical industry August 28th, 2015

CWRU researchers efficiently charge a lithium-ion battery with solar cell: Coupling with perovskite solar cell holds potential for cleaner cars and more August 27th, 2015

Successful boron-doping of graphene nanoribbon August 27th, 2015

Announcements

Small but heading for the big time: Nanobiotix half year results for the six months ended 30 June 2015, in line with expectations: Major clinical achievements and corporate developments August 28th, 2015

A new technique to make drugs more soluble August 28th, 2015

Nanocatalysts improve processes for the petrochemical industry August 28th, 2015

Nanolab Technologies LEAPS Forward with High-Performance Analysis Services to the World: Nanolab Orders Advanced Local Electrode Atom Probe (LEAP®) Microscope from CAMECA Unit of AMETEK Materials Analysis Division August 27th, 2015

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