Electrochemical copolymerization of thiophene derivatives; a precursor to photovoltaic devices
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| Title: | Electrochemical copolymerization of thiophene derivatives; a precursor to photovoltaic devices |
|---|---|
| Authors: | Kumar, Prajwal1, Ranjith, K.1, Gupta, Satyajit1, Ramamurthy, Praveen C. praveen@materials.iisc.ernet.in |
| Source: | Electrochimica Acta. Oct2011, Vol. 56 Issue 24, p8184-8191. 8p. |
| Subjects: | Electrochemistry, Thiophenes, Polymerization, Photovoltaic effect, Conducting polymers, Electric conductivity, Thermal analysis, Fourier transform infrared spectroscopy |
| Abstract: | Abstract: This work presents an electrochemical technique for the polymerization and copolymerization of thiophene derivatives like 7,9-dithiophene-2yl-8H-cyclopenta[a]acenaphthalene-8-one and 3-hexylthiophene. The structural characterization of chemically synthesized monomers and electrochemically synthesized polymers was carried out by nuclear magnetic resonance and Fourier transform infrared spectroscopy. Thermal characterizations indicate that copolymer has increased thermal stability than that of homopolymer. Morphological studies of the polymerized films carried out by scanning electron microscopy shows network structure of copolymer. Optical properties of the homopolymers and copolymer were studied by UV–visible spectrometer and it was observed that band gap of copolymer is less than the homopolymers. HOMO and LUMO levels, band gap values of the respective polymers were also calculated from the cyclic voltammetry technique with various scan rates. By the peak current obtained from various scan rates shows that all polymerization reactions are diffusion controlled process. Charge transfer resistances of polymers were determined using Nyquist plots. Conductivity of synthesized polymers shows higher conductivity for copolymer than homopolymers. [Copyright &y& Elsevier] |
| Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 65803218 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Electrochemical copolymerization of thiophene derivatives; a precursor to photovoltaic devices – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kumar%2C+Prajwal%22">Kumar, Prajwal</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ranjith%2C+K%2E%22">Ranjith, K.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Gupta%2C+Satyajit%22">Gupta, Satyajit</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ramamurthy%2C+Praveen+C%2E%22">Ramamurthy, Praveen C.</searchLink><i> praveen@materials.iisc.ernet.in</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Electrochimica+Acta%22">Electrochimica Acta</searchLink>. Oct2011, Vol. 56 Issue 24, p8184-8191. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Electrochemistry%22">Electrochemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Thiophenes%22">Thiophenes</searchLink><br /><searchLink fieldCode="DE" term="%22Polymerization%22">Polymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Photovoltaic+effect%22">Photovoltaic effect</searchLink><br /><searchLink fieldCode="DE" term="%22Conducting+polymers%22">Conducting polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+analysis%22">Thermal analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Fourier+transform+infrared+spectroscopy%22">Fourier transform infrared spectroscopy</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: This work presents an electrochemical technique for the polymerization and copolymerization of thiophene derivatives like 7,9-dithiophene-2yl-8H-cyclopenta[a]acenaphthalene-8-one and 3-hexylthiophene. The structural characterization of chemically synthesized monomers and electrochemically synthesized polymers was carried out by nuclear magnetic resonance and Fourier transform infrared spectroscopy. Thermal characterizations indicate that copolymer has increased thermal stability than that of homopolymer. Morphological studies of the polymerized films carried out by scanning electron microscopy shows network structure of copolymer. Optical properties of the homopolymers and copolymer were studied by UV–visible spectrometer and it was observed that band gap of copolymer is less than the homopolymers. HOMO and LUMO levels, band gap values of the respective polymers were also calculated from the cyclic voltammetry technique with various scan rates. By the peak current obtained from various scan rates shows that all polymerization reactions are diffusion controlled process. Charge transfer resistances of polymers were determined using Nyquist plots. Conductivity of synthesized polymers shows higher conductivity for copolymer than homopolymers. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.electacta.2011.06.114 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 8184 Subjects: – SubjectFull: Electrochemistry Type: general – SubjectFull: Thiophenes Type: general – SubjectFull: Polymerization Type: general – SubjectFull: Photovoltaic effect Type: general – SubjectFull: Conducting polymers Type: general – SubjectFull: Electric conductivity Type: general – SubjectFull: Thermal analysis Type: general – SubjectFull: Fourier transform infrared spectroscopy Type: general Titles: – TitleFull: Electrochemical copolymerization of thiophene derivatives; a precursor to photovoltaic devices Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kumar, Prajwal – PersonEntity: Name: NameFull: Ranjith, K. – PersonEntity: Name: NameFull: Gupta, Satyajit – PersonEntity: Name: NameFull: Ramamurthy, Praveen C. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2011 Type: published Y: 2011 Identifiers: – Type: issn-print Value: 00134686 Numbering: – Type: volume Value: 56 – Type: issue Value: 24 Titles: – TitleFull: Electrochimica Acta Type: main |
| ResultId | 1 |
