30 KB301 KB27 KB200020242013Kiani, FarhoushKoohyar, FardadSharifirad, Meysamštevilka:3letnik:47str. 341-347ISSN:1580-2949COBISSID:999594URN:URN:NBN:SI:doc-JGHGJT3PenInštitut za kovinske materiale in tehnologijeMateriali in tehnologije4,4'-diamino difenil sulfon4.4'-diaminodiphenyl sulfonebakrena elektrodaciklična voltametrijacopper electrodecyclic voltammetrynanosizenanovelikostSEMElectrochemical characterization of the nano Py/DDS/SiO2 film on a copper electrode| Elektrokemijska karakterizacija nanoplasti Py/DDS/SiO2 na bakreni elektrodi|The electroactive copolymer of pyrrole (Py) and 4.4'-diaminodiphenyl sulfone (DDS) was synthesized electrochemically in 4 M H2SO4 and ethanol medium. Both electrochemical synthesis and characterization of the copolymer deposited on acopper electrode were carried out using cyclic voltammetry. The voltammograms exhibited different patterns of behavior with different feed concentrations of Py. Equimolar concentrations of Py and DDS demonstrated a very efficient growth of the copolymer film on the surface of the copper. The scan rate exerted little effect on this copper copolymer film, revealing the film excellent electroactive adherent properties. The effect of pH on the copolymer film showed that the polymer was electrochemically active up to pH 7.0. A spectroelectrochemical analysis of the copolymer film, carried out on an indium tin oxide (ITO) plate, showed multicolor electrochromic behavior when the applied potential was changed. The polymer was characterized with the UV-Vis and FTIR spectral studies. The formation of the polymer through the N-H group was understood from the single N-H stretching vibrational frequency at 3050 cmsup-1. The surface morphology was studied using a SEM analysis and the grain size of the copolymer was measured using XRD studies and was found to be 50 nm. The electrical conductivity of the copolymer was 5.98 x 10sup 10sup{-2} S cmsup-1, as determined using a four-probe conductivity meterElektrično aktiven kopolimer pirola (Py) in 4,4'-diaminodifenil sulfona (DDS) je bil sintetiziran elektrokemijsko v mediju 4 M H2SO4 in etanola. S ciklično voltametrijo je bila narejena elektrokemijska sinteza in karakterizacija kopolimera, nanesenega na bakreno elektrodo. Voltamogrami prikazujejo različne spektralne vzorce pri različnih koncentracijah dodanega Py. Ekvimolarna koncentracija Py in DDS izkazujeta učinkovito rast kopolimerne plasti na površini bakra. Hitrost skeniranja ima majhen učinek na bakrovo kopolimerno plast, razkrije pa odlične elektroaktivne lastnosti. Učinek pH na kopolimerno plast je pokazal, da je plast elektrokemično aktivna do pH 7,0. Spektroelektrokemična analiza kopolimerne tanke plasti na plošči iz indij-kositrovega oksida (ITO) je pokazala večbarvno elektrokromno vedenje, če se je uporabljeni potencial spremenil. Polimer je bil ocenjen z UV-Vis- in FTIR- študijami spektra. Nastanek polimera preko N-H-skupine je razumeti kot N-H razteznostna vibracijska frekvenca pri 3050 cmna-1. Morfologija površine je bila preučevana s SEM-analizo, velikost zrn kopolimera je bila izmerjena z XRD in ugotovljeno je bilo, da je velikosti 50 nm. Električna prevodnost kopolimera, izmerjena z merilnikom prevodnosti s štirimi sondami, je bila 5,98 x 10na{-2} S cmna{-1}TEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije