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https://hdl.handle.net/1822/34751
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Campo DC | Valor | Idioma |
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dc.contributor.author | Abreu, Ana S. | por |
dc.contributor.author | Oliveira, M. | por |
dc.contributor.author | Machado, A. V. | por |
dc.date.accessioned | 2015-04-08T10:28:05Z | - |
dc.date.available | 2015-04-08T10:28:05Z | - |
dc.date.issued | 2014-11-23 | - |
dc.identifier.uri | https://hdl.handle.net/1822/34751 | - |
dc.description.abstract | Photochromic copolymers carrying spiropyran side groups have attracted particular attention for potential applications in optical devices, photonic memory and photosensing, as well as, fluorescence imaging.[1] These materials allow overcoming many of the limitations inherent to traditional spiropyran doped polymers, such as, phase separation of the colorant and retardation of the decoloration of the open form.[2] The introduction of light sensitive moieties within responsive polymers has led to the development of sophisticated multiresponsive systems.[3] Block copolymers are important self-assembling systems that can assume a diversity of nanometer-scale morphologies due to the incompatibility and the connectivity constrains between the chemically distinct segments. Therefore, self-assembly of photochromic copolymers in the solid state or in solution allows the development of nanostructured materials. [4] The aim of this research study is the synthesis of a multiresponsive spiropyran-based copolymer, poly(styrene)- co-poly([1´,3´,3´-trimethyl-6-methacryloyloxyspiro(2H-1-benzopyran-2,2´-indoline)]4-vinylbenzoic acid) 2. The functionalized block copolymer poly(styrene)-block-poly(4-vinylbenzoic acid) (PSt-b-P4VBA) 1 synthesized by reversible addition fragmentation chain-transfer (RAFT) polymerization was coupled with 1,3,3-trimethyl-6- hydroxyspiro(2H-1-benzopyran-2,2-indoline). The link between the functionalized block copolymer and spiropyran was successfully obtained by Steglich esterification using DMAP/DCC as catalysts (Scheme 1). | eng |
dc.description.sponsorship | n-STeP Project | por |
dc.description.sponsorship | NORTE-07-0124-FEDER-000039 | por |
dc.description.sponsorship | Programa Operacional Regional do Norte (ON.2) | por |
dc.description.sponsorship | PEst-C/CTM/LA0025/2013 (Strategic Project - LA 25 - 2013-2014) | por |
dc.language.iso | eng | por |
dc.rights | openAccess | por |
dc.title | Multiresponsive spiropyran-based copolymer: synthesis and characterization | por |
dc.type | conferenceAbstract | por |
dc.peerreviewed | no | por |
sdum.publicationstatus | published | por |
oaire.citationConferencePlace | South Africa-Johannesburg | por |
oaire.citationTitle | MAM-14: 7th International Symposium on Macro- and Supramolecular Architectures and Materials | por |
sdum.conferencePublication | MAM-14: 7th International Symposium on Macro- and Supramolecular Architectures and Materials | por |
Aparece nas coleções: | IPC - Outras publicações/Other publications |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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MAM_14_ASA.pdf | 94,39 kB | Adobe PDF | Ver/Abrir |