Gas sensing property of a conducting copolymer

Ak, Metin
Yigitsoy, Basak
Yagci, Yusuf
Toppare, Levent Kamil
A bifunctional amido thiophene, namely hexamethylene (bis-3-thiophene acetamide) (HMTA) was synthesized and its copolymer with pyrrole was electrochemically prepared in water/ PTSA solvent/ electrolyte medium. Sensory behavior of this copolymer against ammonia, methanol, dichloromethane (DCM) and n-hexane vapors was investigated. The methanol vapor, which can form hydrogen bonds with the polar groups on the copolymer surface, showed the maximum response. DCM, which is less polar, yielded relatively lower response than methanol. Hexane, being the non-polar vapor, showed the lowest response.


MCMURRAY, L; HOLMES, AJ; KUPERMAN, A; OZIN, GA; Özkar, Saim (American Chemical Society (ACS), 1991-11-01)
Proton-loaded zeolites, prepared from fully dehydrated zeolites and gaseous, anhydrous Bronsted acids, represent an important step in the synthesis of intrazeolite semiconductor quantum supralattices. Adsorption-induced Na-23 MAS NMR chemical shifts, far-IR Na+ and Tl+ translatory mode frequency shifts, and Tl+ luminescence quenching effects were chosen as probes of cation-anion interaction in these materials. Samples of zeolite Y with various loadings of Tl+ were prepared via aqueous ion-exchange techniq...
Electrochemical polymerisation of 2-aminofluorene in ethylalcohol/water medium
Imamoglu, T; Önal, Ahmet Muhtar (Elsevier BV, 2004-08-01)
Electrochemical polymerisation of 2-aminofluorene, 2AF, was investigated in ethylalcohol/water mixture (3:2, v:v) in the presence of HClO4 as the supporting electrolyte via constant potential electrolysis, CPE. Prior to CPE, electrochemical behaviour of the monomer was investigated in the same solvent electrolyte couple utilising cyclic voltammetry, CV. Electrochemical polymerisation of the monomer yielded insoluble, dark bluish-green, conducting polymer deposit on the electrode surface. Characterisation of...
Liquid chromatography as a novel method for determination of the dispersion of supported Fd particles
Kiraly, Zoltan; Mastalir, Agnes; Csaszar, Agota; Demir, Hilal; Üner, Deniz; Findenegg, Gerhard H. (Elsevier BV, 2007-01-25)
A solution-based method has been developed for determination of the number of active centers on Pd particles responsible for alkene hydrogenation in the liquid phase. Pd/gamma-Al2O3 was placed in a liquid chromatographic (LC) column, and the CS2 uptake of the catalyst was determined by applying CS2 pulses in methanol solution until surface saturation was attained. The reliability of the LC method was confirmed by quantitative CS2 poisoning of the catalyst in the liquid-phase hydrogenation of styrene to ethy...
Synthesis and characterization of conducting graft copolymers based on oligophenols
Sahmetlioglu, Ertugrul; Arikan, Ufuk; Toppare, Levent Kamil; Yuruk, Huseyin; Mart, Hasan (Informa UK Limited, 2006-10-01)
Oligo-2-aminophenol (OAF) was synthesized with oxidative polycondensation of 2-aminophenol and hydrogen peroxide in an aqueous alkaline medium at 80 degrees C. Oligo-2-aminophenol with thiophene side groups (TOAF) was obtained by the reaction of OAF and thiophene-3-acetic acid. Graft copolymers of TOAF and pyrrole were synthesized by electrochemical polymerization in p-toluene sulfonic acid (PTSA)/water medium. Characterization of the graft copolymer (TOAF-g-Py), was carried out by combination of techniques...
OKTEM, Z; SARI, A; ALYURUK, K (Elsevier BV, 1993-05-01)
Polymethylaluminium oxide (PMAO) was prepared by reacting trimethylaluminium (AlMe3) with water in dilute dioxane solution. Several PMAO samples with different degrees of polymerizations (DP) were prepared (1 less-than-or-equal-to DP less-than-or-equal-to 7) either by changing reaction conditions or by fractionating the products. PMAO with DP about unity was found to be trimeric in dilute dioxane solutions but, in higher dielectric solvents, it partially dissociated into free ions. Electrical conductance me...
Citation Formats
M. Ak, B. Yigitsoy, Y. Yagci, and L. K. Toppare, “Gas sensing property of a conducting copolymer,” E-POLYMERS, pp. 0–0, 2007, Accessed: 00, 2020. [Online]. Available: