Detalhes bibliográficos
| Resumo: | Three series of novel push-pull 5-aryl[3,2-b]thienothiophene derivatives functionalized with potent electron-withdrawing terminal moieties) were synthesized in moderate to excellent yields through Suzuki coupling followed by Knoevenagel condensation. These novel chromophores combine intense absorption in the near-UV down to the orange visible region in relation with a strong intramolecular charge transfer transition. By combining strong donor and acceptor, large fluorescence quantum yield are achieved as well as large two-photon absorption responses. Interestingly, due to the improved rigidity and electronic delocalization provided by the thienothiophene moiety (compared to the bis-thiophene one) larger one- and two-photon brightness values are achieved. As a result, a library of new fluorescent dyes showing enhanced brightness (up to and tunable fluorescence (ranging from blue to the NIR region) has been obtained which offer interesting promises for bioimaging applications. |
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| Autores principais: | Raposo, M. Manuela M. |
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| Outros Autores: | Herbivo, Cyril; Hugues, Vincent; Clermont, Guillaume; Castro, M. Cidália R.; Comel, Alain; Blanchard-Desce, Mireille |
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| Assunto: | Synthesis Fluorescence Two-photon absorption (TPA) Thienothiophenes Push-pull heterocyclic systems Nonlinear optics (NLO) Suzuki coupling Bioimaging applications Aldehydes Cross-coupling Donor-acceptor systems Sulfur heterocycles Two-photon absorption |
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| Ano: | 2016 |
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| País: | Portugal |
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| Tipo de documento: | artigo |
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| Tipo de acesso: | acesso aberto |
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| Instituição associada: | Universidade do Minho |
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| Idioma: | inglês |
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| Origem: | RepositóriUM - Universidade do Minho |
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