Copolymerization of aniline and m-chloroaniline. Chlorine addition and structure of the resulting material
The copolymerization of aniline (Ani) and m-chloroaniline (mClA) in variable ratios was performed by chemical oxidation in HCl medium. The resulting copolymer composition was determined by elemental analysis and XPS. The results show the incorporation of additional Cl substituents in the polymer bac...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_13815148_v69_n3_p197_Antonel |
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todo:paper_13815148_v69_n3_p197_Antonel2023-10-03T16:11:51Z Copolymerization of aniline and m-chloroaniline. Chlorine addition and structure of the resulting material Antonel, P.S. Andrade, E.M. Molina, F.V. Conducting polymer Copolymerization Photoluminescence UV-vis spectra Aniline Chemical analysis Chlorine Conductive plastics Copolymerization Copolymers Isomers Light emission Luminescence Negative ions Organic conductors Photoluminescence Polyaniline Polymers Polymethyl methacrylates Reaction rates Chemical oxidations Chloroaniline Conducting polymer Conductivity measurements Copolymer compositions Elemental analysis Photoluminescence spectrum Polymer backbones Polymer chains Polymerization mediums Resulting materials Semiquinone UV-vis spectra Variable ratios Xps ZINDO/S Conducting polymers The copolymerization of aniline (Ani) and m-chloroaniline (mClA) in variable ratios was performed by chemical oxidation in HCl medium. The resulting copolymer composition was determined by elemental analysis and XPS. The results show the incorporation of additional Cl substituents in the polymer backbone when m-chloroaniline is present in the polymerization medium with a high mClA:Ani ratio. IR and NMR characterization confirms that finding. Conductivity measurements of the copolymers in salt form were also performed. UV-vis spectra for high mClA:Ani ratios show a main band centred ca. 380 nm. PM3-ZINDO/S spectra calculations suggest that the Cl substituents stabilize spinless semiquinone structures in the polymer chain which are responsible for the 380 nm band. Photoluminescence spectra are recorded and analyzed. The addition of chlorine is attributed to the lower reaction rate in high mClA:Ani ratio. Copolymers with high mClA:Ani ratio appear as materials very different from polyaniline, thus these differences should be considered regarding possible applications. © 2008 Elsevier Ltd. All rights reserved. Fil:Antonel, P.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Andrade, E.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Molina, F.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_13815148_v69_n3_p197_Antonel |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Conducting polymer Copolymerization Photoluminescence UV-vis spectra Aniline Chemical analysis Chlorine Conductive plastics Copolymerization Copolymers Isomers Light emission Luminescence Negative ions Organic conductors Photoluminescence Polyaniline Polymers Polymethyl methacrylates Reaction rates Chemical oxidations Chloroaniline Conducting polymer Conductivity measurements Copolymer compositions Elemental analysis Photoluminescence spectrum Polymer backbones Polymer chains Polymerization mediums Resulting materials Semiquinone UV-vis spectra Variable ratios Xps ZINDO/S Conducting polymers |
| spellingShingle |
Conducting polymer Copolymerization Photoluminescence UV-vis spectra Aniline Chemical analysis Chlorine Conductive plastics Copolymerization Copolymers Isomers Light emission Luminescence Negative ions Organic conductors Photoluminescence Polyaniline Polymers Polymethyl methacrylates Reaction rates Chemical oxidations Chloroaniline Conducting polymer Conductivity measurements Copolymer compositions Elemental analysis Photoluminescence spectrum Polymer backbones Polymer chains Polymerization mediums Resulting materials Semiquinone UV-vis spectra Variable ratios Xps ZINDO/S Conducting polymers Antonel, P.S. Andrade, E.M. Molina, F.V. Copolymerization of aniline and m-chloroaniline. Chlorine addition and structure of the resulting material |
| topic_facet |
Conducting polymer Copolymerization Photoluminescence UV-vis spectra Aniline Chemical analysis Chlorine Conductive plastics Copolymerization Copolymers Isomers Light emission Luminescence Negative ions Organic conductors Photoluminescence Polyaniline Polymers Polymethyl methacrylates Reaction rates Chemical oxidations Chloroaniline Conducting polymer Conductivity measurements Copolymer compositions Elemental analysis Photoluminescence spectrum Polymer backbones Polymer chains Polymerization mediums Resulting materials Semiquinone UV-vis spectra Variable ratios Xps ZINDO/S Conducting polymers |
| description |
The copolymerization of aniline (Ani) and m-chloroaniline (mClA) in variable ratios was performed by chemical oxidation in HCl medium. The resulting copolymer composition was determined by elemental analysis and XPS. The results show the incorporation of additional Cl substituents in the polymer backbone when m-chloroaniline is present in the polymerization medium with a high mClA:Ani ratio. IR and NMR characterization confirms that finding. Conductivity measurements of the copolymers in salt form were also performed. UV-vis spectra for high mClA:Ani ratios show a main band centred ca. 380 nm. PM3-ZINDO/S spectra calculations suggest that the Cl substituents stabilize spinless semiquinone structures in the polymer chain which are responsible for the 380 nm band. Photoluminescence spectra are recorded and analyzed. The addition of chlorine is attributed to the lower reaction rate in high mClA:Ani ratio. Copolymers with high mClA:Ani ratio appear as materials very different from polyaniline, thus these differences should be considered regarding possible applications. © 2008 Elsevier Ltd. All rights reserved. |
| format |
JOUR |
| author |
Antonel, P.S. Andrade, E.M. Molina, F.V. |
| author_facet |
Antonel, P.S. Andrade, E.M. Molina, F.V. |
| author_sort |
Antonel, P.S. |
| title |
Copolymerization of aniline and m-chloroaniline. Chlorine addition and structure of the resulting material |
| title_short |
Copolymerization of aniline and m-chloroaniline. Chlorine addition and structure of the resulting material |
| title_full |
Copolymerization of aniline and m-chloroaniline. Chlorine addition and structure of the resulting material |
| title_fullStr |
Copolymerization of aniline and m-chloroaniline. Chlorine addition and structure of the resulting material |
| title_full_unstemmed |
Copolymerization of aniline and m-chloroaniline. Chlorine addition and structure of the resulting material |
| title_sort |
copolymerization of aniline and m-chloroaniline. chlorine addition and structure of the resulting material |
| url |
http://hdl.handle.net/20.500.12110/paper_13815148_v69_n3_p197_Antonel |
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