MIPs logo MIPdatabase      MIP2020 Conference logo Use this space
Custom Search
Reference type: Conference Proceeding
Authors: Alizadeh T, Rezaloo F
Publication date: 2011
Article title: Synthesis and evaluation of the selectivity and adsorption characteristics of ethanol imprinted polymers-carbon nanotube composite.
Alternative URL: http://icc2011.ir/Docs/B.pdf

Conference information: Abstracts, 15th Iranian Chemistry Congress

Abstract: Polymeric chemiresistor are a class of chemical sensor that has promise for being practical in situ sensor of volatile organic compound. (VOC) in various environmental monitoring Chemiresistors are manufactured by dissolving a chemically sensitive polymer in an appropriate solvent and mixing the dissolve polymer with conductive carbon particle. The resulting ink is then deposed and dried onto thin film (1). When exposed to various gases, the polymer within the composite film sorbs the vapor and swells reversibility. This swelling can change the distance between the conductive carbon Particles and thus induces a resistance change in the composite film which can be measured (2). Molecular imprinting is a technique to introduce molecular recognition sites for a specific analyte in a synthetic polymer for selective separation or concentration of target molecules (3). First, we synthesized the nano-sized imprinted polymer for ethanol in presence of MAA as a monomer and DVB as a cross linker and AIBN as an initiator. The applied chemiresistor ink was a mixture of a known concentration of polymeric adhesive, carbon nanotube, MIP particles and organic solvent. A little amount of the described ink was deposed between the electrodes and waited to dry. In order to test the sensor, a known concentration of ethanol was added in the designed sampling system. It was observed that the sorption of the target gas in the composite layer, deposited between the electrodes, increased considerably the sensor resistance. This event can be attributed to the swelling of the MIP particles as a result of ethanol adsorption on the MIP of the deposited layer. The inclusion of ethanol molecules in the selective cavities of the MIP leads to a noticeable swelling in the MIP particles, located among the carbon nanotubes. This phenomenon increases the distance among the conductive elements of the device and thus decrease the electron mobility through the MIP/nano tube composites. This sensor showed an interesting selectivity to ethanol
Template and target information: ethanol

  SMI logo tie  Periodic table Posh shirt  Lab Chick script shirt

Molecules Special Issue call      Appeal for information


Join the Society for Molecular Imprinting
Logo of the Society for Molecular Imprinting

New items RSS feed
new items RSS feed  View latest updates

Sign-up for e-mail updates:
Choose between receiving an occasional newsletter or more frequent e-mail alerts.
Click here to go to the sign-up page.

Is your name elemental or peptidic? Enter your name and find out by clicking either of the buttons below!
Other products you may like:
view listings for MIP books on eBay:

Mickey Mouse 90th Anniversary banner