Azo polymers with electronical push and pull structures prepared via RAFT polymerization and its photoinduced birefringence behavior
Two methacrylate monomers containing azo and electronical push and pull structure, e.g. 2-Methyl-acrylic-acid-2-{[4-(4-cyano-phenylazo)-3-methyl-phenyl]-ethyl-amino-ethyl ester (MACP) with cyano substituted and 2-Methylacrylic-acid-2-{ethyl-[4-(4-methoxy-phenylazo)-3-methyl-phenyl]-amino}-ethyl este...
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| Language: | English |
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Budapest University of Technology and Economics
2008-08-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0000679&mi=cd |
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| description | Two methacrylate monomers containing azo and electronical push and pull structure, e.g. 2-Methyl-acrylic-acid-2-{[4-(4-cyano-phenylazo)-3-methyl-phenyl]-ethyl-amino-ethyl ester (MACP) with cyano substituted and 2-Methylacrylic-acid-2-{ethyl-[4-(4-methoxy-phenylazo)-3-methyl-phenyl]-amino}-ethyl ester (MAMP) with methoxy substituted, were synthesized and polymerized using 2-cyanoprop-2-yl dithiobenzoate (CPDB) as chain transfer agent and 2,2'-azobisisobutyronitrile (AIBN) as initiator. The results showed that the polymerization displayed characteristics of ‘living’/controlled free radical polymerization. Thus, the obtained polymers, polyMACP (pMACP) and polyMAMP (pMAMP), had controlled molecular weights and narrow molecular weights distribution. The chain extension experiments of pMACP and pMAMP using styrene as the second monomer were successfully carried out. The photo-induced trans-cis-trans isomerization kinetic of pMACP and pMAMP in chloroform solution were described. Marked differences in rate for the trans-cis and cis-trans isomerization of pMACP and pMAMP were observed in chloroform solution due to the different electronic effects in these two polymers. Photoinduced birefringence and surface relief grating (SRG) of the pMACP and pMAMP were investigated in thin film state. |
| format | Article |
| id | doaj-art-1c50f2ac2b584b4bbf83917eb795fd7a |
| institution | DOAJ |
| issn | 1788-618X |
| language | English |
| publishDate | 2008-08-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-1c50f2ac2b584b4bbf83917eb795fd7a2025-08-20T02:42:01ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2008-08-012858960110.3144/expresspolymlett.2008.71Azo polymers with electronical push and pull structures prepared via RAFT polymerization and its photoinduced birefringence behaviorTwo methacrylate monomers containing azo and electronical push and pull structure, e.g. 2-Methyl-acrylic-acid-2-{[4-(4-cyano-phenylazo)-3-methyl-phenyl]-ethyl-amino-ethyl ester (MACP) with cyano substituted and 2-Methylacrylic-acid-2-{ethyl-[4-(4-methoxy-phenylazo)-3-methyl-phenyl]-amino}-ethyl ester (MAMP) with methoxy substituted, were synthesized and polymerized using 2-cyanoprop-2-yl dithiobenzoate (CPDB) as chain transfer agent and 2,2'-azobisisobutyronitrile (AIBN) as initiator. The results showed that the polymerization displayed characteristics of ‘living’/controlled free radical polymerization. Thus, the obtained polymers, polyMACP (pMACP) and polyMAMP (pMAMP), had controlled molecular weights and narrow molecular weights distribution. The chain extension experiments of pMACP and pMAMP using styrene as the second monomer were successfully carried out. The photo-induced trans-cis-trans isomerization kinetic of pMACP and pMAMP in chloroform solution were described. Marked differences in rate for the trans-cis and cis-trans isomerization of pMACP and pMAMP were observed in chloroform solution due to the different electronic effects in these two polymers. Photoinduced birefringence and surface relief grating (SRG) of the pMACP and pMAMP were investigated in thin film state.http://www.expresspolymlett.com/letolt.php?file=EPL-0000679&mi=cdPolymer synthesis, molecular eAzopolymersPhoto-induced birefringenceSurface relief grating(SRG)Reversible addition-fragmentat |
| spellingShingle | Azo polymers with electronical push and pull structures prepared via RAFT polymerization and its photoinduced birefringence behavior eXPRESS Polymer Letters Polymer synthesis, molecular e Azopolymers Photo-induced birefringence Surface relief grating(SRG) Reversible addition-fragmentat |
| title | Azo polymers with electronical push and pull structures prepared via RAFT polymerization and its photoinduced birefringence behavior |
| title_full | Azo polymers with electronical push and pull structures prepared via RAFT polymerization and its photoinduced birefringence behavior |
| title_fullStr | Azo polymers with electronical push and pull structures prepared via RAFT polymerization and its photoinduced birefringence behavior |
| title_full_unstemmed | Azo polymers with electronical push and pull structures prepared via RAFT polymerization and its photoinduced birefringence behavior |
| title_short | Azo polymers with electronical push and pull structures prepared via RAFT polymerization and its photoinduced birefringence behavior |
| title_sort | azo polymers with electronical push and pull structures prepared via raft polymerization and its photoinduced birefringence behavior |
| topic | Polymer synthesis, molecular e Azopolymers Photo-induced birefringence Surface relief grating(SRG) Reversible addition-fragmentat |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0000679&mi=cd |