TY - JOUR
T1 - Electrocopolymerization of pyrrole with bis(4-aminobutyl) polydimethylsiloxane
AU - Ustamehmetoǧlu, Belkis
AU - Kizilcan, Nilgün
AU - Demir, Ömer
PY - 2012
Y1 - 2012
N2 - Purpose - The purpose of this paper is to synthesise the block copolymer of pyrrole (Py) with bis(4-inobutyl)polydimethylsiloxane (DA.PDMS) by electrochemical method. The characterisation of the insoluble block copolymers, P(Py-b-DA.PDMS), was performed by cyclovoltammetric measurements, solid-state conductivity and DSC measurements. The surface morphology of the copolymers was examined with scanning electron microscope (SEM). Design/methodology/approach - Electropolymerisation process was performed potentiostatically and potentiodynamically. Redox behaviour of the resulting copolymer films was investigated. In-situ spectroelectrochemical measurement was carried out on indium thin oxide (ITO) electrodes. Findings - The ionisation potentials (Ip), electron affinity (Ea), optical band gap (Eg), peak potentials (Ep), and doping degree (y) of copolymers were calculated by using in-situ spectroelectrochemical measurement results. The copolymers have slightly lower doping degree, band gap, Ip and Ea values than homopolymer. Copolymers had the conductivities of 10-5?S/cm and had Tg values. Research limitations/implications - This study can also be focused on obtaining conductive copolymer with insulator DA.PDMS blocks on the PPy chain by one-step polymerisation. Practical implications - This work provides technical information for the synthesis and characterisation of conducting block copolymer by electrochemical method. Originality/value - Change in optical and electrical properties of the P(Py-b-DA.PDMS) shows the role of the individual properties of the copolymer blocks. While the DSC scan of PPy showed no transition temperature, which is a characteristic property of conducting copolymers, P(Py-b-DA.PDMS) had Tg values. This might be due to the inclusion of the DA.PDMS blocks on the PPy chains.
AB - Purpose - The purpose of this paper is to synthesise the block copolymer of pyrrole (Py) with bis(4-inobutyl)polydimethylsiloxane (DA.PDMS) by electrochemical method. The characterisation of the insoluble block copolymers, P(Py-b-DA.PDMS), was performed by cyclovoltammetric measurements, solid-state conductivity and DSC measurements. The surface morphology of the copolymers was examined with scanning electron microscope (SEM). Design/methodology/approach - Electropolymerisation process was performed potentiostatically and potentiodynamically. Redox behaviour of the resulting copolymer films was investigated. In-situ spectroelectrochemical measurement was carried out on indium thin oxide (ITO) electrodes. Findings - The ionisation potentials (Ip), electron affinity (Ea), optical band gap (Eg), peak potentials (Ep), and doping degree (y) of copolymers were calculated by using in-situ spectroelectrochemical measurement results. The copolymers have slightly lower doping degree, band gap, Ip and Ea values than homopolymer. Copolymers had the conductivities of 10-5?S/cm and had Tg values. Research limitations/implications - This study can also be focused on obtaining conductive copolymer with insulator DA.PDMS blocks on the PPy chain by one-step polymerisation. Practical implications - This work provides technical information for the synthesis and characterisation of conducting block copolymer by electrochemical method. Originality/value - Change in optical and electrical properties of the P(Py-b-DA.PDMS) shows the role of the individual properties of the copolymer blocks. While the DSC scan of PPy showed no transition temperature, which is a characteristic property of conducting copolymers, P(Py-b-DA.PDMS) had Tg values. This might be due to the inclusion of the DA.PDMS blocks on the PPy chains.
KW - Copolymer
KW - Electrochemistry
KW - Electropolymerisation
KW - Polydimethylsiloxane
KW - Polymers
KW - Polypyrrole
UR - http://www.scopus.com/inward/record.url?scp=84861405998&partnerID=8YFLogxK
U2 - 10.1108/03699421211226471
DO - 10.1108/03699421211226471
M3 - Article
AN - SCOPUS:84861405998
SN - 0369-9420
VL - 41
SP - 179
EP - 186
JO - Pigment and Resin Technology
JF - Pigment and Resin Technology
IS - 3
ER -