Electrogenerated networks from poly[4-(diphenylamino)benzyl methacrylate] and their electrochromic properties
Poly[4-(diphenylamino)benzyl methacrylate] with well-defined molecular weight and low polydispersity was prepared by atom transfer radical polymerization (ATRP) using 4-(diphenylamino) benzyl 2-bromo-2-methyl-propanoate as initiator and CuBr/2,2'-bipyridine as catalytic complex. Electrochemical...
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| Format: | Article |
| Language: | English |
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Budapest University of Technology and Economics
2014-09-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0005264&mi=cd |
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| author | O. I. Negru L. Vacareanu M. Grigoras |
| author_facet | O. I. Negru L. Vacareanu M. Grigoras |
| author_sort | O. I. Negru |
| collection | DOAJ |
| description | Poly[4-(diphenylamino)benzyl methacrylate] with well-defined molecular weight and low polydispersity was prepared by atom transfer radical polymerization (ATRP) using 4-(diphenylamino) benzyl 2-bromo-2-methyl-propanoate as initiator and CuBr/2,2'-bipyridine as catalytic complex. Electrochemical behavior and optical properties of the polymers were investigated by cyclic voltammetry and UV-Vis and fluorescence spectroscopy. Cyclic votammetric studies revealed that the redox processes were accompanied by dimerization of triphenylamine pendant groups. The initial polymer was postmodified, in solution or bulk, by electrochemical oxidation leading to a crosslinked and insoluble network with electro -chromic properties, accompanied by strong color changes with high coloration efficiency. The crosslinking reaction took place between triphenylamine groups through para</I> free positions leading to tetraphenylbenzidine bridges. The structure of polymers was confirmed by Fourier transform infrared (FT-IR) spectroscopy and 1H and 13C-nuclear magnetic resonance spectroscopy. Morphology studies of the cross-linked film have evidenced a smooth and continuous aspect without any pinholes or defects. |
| format | Article |
| id | doaj-art-db60f35e5ae84633873ff757288b76a5 |
| institution | Kabale University |
| issn | 1788-618X |
| language | English |
| publishDate | 2014-09-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-db60f35e5ae84633873ff757288b76a52025-08-20T03:58:53ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2014-09-018964765810.3144/expresspolymlett.2014.68Electrogenerated networks from poly[4-(diphenylamino)benzyl methacrylate] and their electrochromic propertiesO. I. NegruL. VacareanuM. GrigorasPoly[4-(diphenylamino)benzyl methacrylate] with well-defined molecular weight and low polydispersity was prepared by atom transfer radical polymerization (ATRP) using 4-(diphenylamino) benzyl 2-bromo-2-methyl-propanoate as initiator and CuBr/2,2'-bipyridine as catalytic complex. Electrochemical behavior and optical properties of the polymers were investigated by cyclic voltammetry and UV-Vis and fluorescence spectroscopy. Cyclic votammetric studies revealed that the redox processes were accompanied by dimerization of triphenylamine pendant groups. The initial polymer was postmodified, in solution or bulk, by electrochemical oxidation leading to a crosslinked and insoluble network with electro -chromic properties, accompanied by strong color changes with high coloration efficiency. The crosslinking reaction took place between triphenylamine groups through para</I> free positions leading to tetraphenylbenzidine bridges. The structure of polymers was confirmed by Fourier transform infrared (FT-IR) spectroscopy and 1H and 13C-nuclear magnetic resonance spectroscopy. Morphology studies of the cross-linked film have evidenced a smooth and continuous aspect without any pinholes or defects.http://www.expresspolymlett.com/letolt.php?file=EPL-0005264&mi=cdPolymer synthesis, molecular eTriphenylamine-based polymerscrosslinkingelectrochromic networks |
| spellingShingle | O. I. Negru L. Vacareanu M. Grigoras Electrogenerated networks from poly[4-(diphenylamino)benzyl methacrylate] and their electrochromic properties eXPRESS Polymer Letters Polymer synthesis, molecular e Triphenylamine-based polymers crosslinking electrochromic networks |
| title | Electrogenerated networks from poly[4-(diphenylamino)benzyl methacrylate] and their electrochromic properties |
| title_full | Electrogenerated networks from poly[4-(diphenylamino)benzyl methacrylate] and their electrochromic properties |
| title_fullStr | Electrogenerated networks from poly[4-(diphenylamino)benzyl methacrylate] and their electrochromic properties |
| title_full_unstemmed | Electrogenerated networks from poly[4-(diphenylamino)benzyl methacrylate] and their electrochromic properties |
| title_short | Electrogenerated networks from poly[4-(diphenylamino)benzyl methacrylate] and their electrochromic properties |
| title_sort | electrogenerated networks from poly 4 diphenylamino benzyl methacrylate and their electrochromic properties |
| topic | Polymer synthesis, molecular e Triphenylamine-based polymers crosslinking electrochromic networks |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0005264&mi=cd |
| work_keys_str_mv | AT oinegru electrogeneratednetworksfrompoly4diphenylaminobenzylmethacrylateandtheirelectrochromicproperties AT lvacareanu electrogeneratednetworksfrompoly4diphenylaminobenzylmethacrylateandtheirelectrochromicproperties AT mgrigoras electrogeneratednetworksfrompoly4diphenylaminobenzylmethacrylateandtheirelectrochromicproperties |