Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/44394
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Campo DC | Valor | Idioma |
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dc.contributor.author | Fernandes, Sara Sofia Marques | por |
dc.contributor.author | Raposo, M. Manuela M. | por |
dc.date.accessioned | 2017-01-19T12:07:55Z | - |
dc.date.issued | 2016-06 | - |
dc.date.submitted | 2016 | - |
dc.identifier.uri | https://hdl.handle.net/1822/44394 | - |
dc.description.abstract | Push-pull π-conjugated systems of the thiophene type have several interesting applications as nonlinear optical (NLO) and photochromic materials, sensitizers for dye sensitized solar cells (DSSCs), etc. As part of an on-going research to develop efficient donor-acceptor substituted heterocyclic systems for diverse applications such as NLO and organic sensitizers for DSSCs, we report in this communication the synthesis and characterization of two novel heterocyclic compounds 1-2, using several synthetic methodologies. These new push-pull systems are based on a furan donor moiety and a thieno[3,2-b]thiophene spacer, functionalized with different electron withdrawing groups. The full characterization of the new compounds was performed using UV-visible (absorption and emission), 1H NMR and IR spectroscopies. The experimental results showed that the optical and electronic properties of these push-pull systems can be readily tuned by varying the electron-acceptor strength of the groups linked to the thieno[3,2-b]thiophene π-bridge. Moreover, their push-pull character with a significant intramolecular charge transfer (ICT) from the donor furan heterocycle to the acceptor groups and a high polarizability of the whole π-conjugated systems reveal their potential application as chromophores for NLO and/or as sensitizers for DSSCs. | por |
dc.description.sponsorship | FCT | por |
dc.description.sponsorship | FEDER | por |
dc.description.sponsorship | QREN | por |
dc.language.iso | eng | por |
dc.relation | info:eu-repo/grantAgreement/FCT/COMPETE/132953/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F87786%2F2012/PT | por |
dc.rights | openAccess | - |
dc.subject | Push-pull pi-conjugated systems | por |
dc.subject | UV-Visible | por |
dc.subject | Fluorescence | por |
dc.subject | DSSC | por |
dc.subject | NLO | por |
dc.subject | Thienothiophene | por |
dc.title | Spectroscopic characterization of novel push-pull thieno[3,2-b]thiophene derivatives functionalized with different acceptor groups. | por |
dc.type | panelPresentation | - |
dc.peerreviewed | yes | por |
sdum.publicationstatus | info:eu-repo/semantics/publishedVersion | por |
oaire.citationConferenceDate | 17 Jun. 2016 | por |
sdum.event.type | meeting | por |
oaire.citationStartPage | P11 | por |
oaire.citationConferencePlace | Braga, Portugal | por |
oaire.citationTitle | IV Encontro em Técnicas de Caracterização e Análise Química | por |
dc.subject.fos | Ciências Naturais::Ciências Químicas | por |
Aparece nas coleções: | CDQuim - Comunicações e Proceedings |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Abstract ETCAQ 2016.pdf | 235,99 kB | Adobe PDF | Ver/Abrir |