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https://hdl.handle.net/1822/42138
Título: | Interactions between an Aryl Thioacetate-Functionalized Zn(II) Porphyrin and Graphene Oxide |
Autor(es): | Mao, Boyang Calatayud, David G. Mirabello, Vincenzo Hodges, Benjamin J. Martins, J. A. R. Botchway, Stanley W. Mitchels, John M. Pascu, Sofia I. |
Palavras-chave: | AFM studies fluorescence emission titrations graphene oxide porphyrin UVvis titrations |
Data: | 2016 |
Editora: | John Wiley and Sons |
Revista: | Advanced Functional Materials |
Citação: | Mao, Boyang; Calatayud, David G.; Mirabello, Vincenzo; Hodges, Benjamin J.; Martins, José Alberto Ribeiro; Botchway, Stanley W.; Mitchels, John M.; Pascu, Sofia I., Interactions between an Aryl Thioacetate-Functionalized Zn(II) Porphyrin and Graphene Oxide. Advanced Functional Materials, 26(5), 687-697, 2016 |
Resumo(s): | The surface modification of graphene oxide (GO) is carried out via the supramolecular functionalization route using a Zn(II)-porphyrin which is soluble in common organic solvents on basis of long alkyl chains present at the exocyclic positions. This acts as a dispersing agent and decorates the surface of the graphene oxide uniformly, giving rise to a new nanohybrid denoted Zn(II)-porphyrin@GO. The resulting Zn(II)-porphyrin@GO nanohybrid forms a stable dispersion in ethanol (as characterized by several different spectroscopic techniques such as UVvis, Fourier transform infrared, Raman). The morphology of Zn(II)-porphyrin@GO nanohybrid is investigated by atomic force microscopy (AFM) and transmission electron microscope (TEM)/selected area electron diffraction. Both TEM and AFM measurements indicate that the Zn(II)-porphyrin self-assemble onto the surface of graphene oxide sheets. Steady-state and time-resolved fluorescence emission studies in the dispersed phase, and as a thin film, point toward the strongly quenched fluorescence emission and lifetime decay, suggesting that energy transfer occurs from the singlet excited state of Zn(II)-porphyrin unit to GO sheets. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/42138 |
DOI: | 10.1002/adfm.201504147 |
ISSN: | 1616-301X |
e-ISSN: | 1616-3028 |
Versão da editora: | http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1616-3028 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito autor |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_40051_1.pdf Acesso restrito! | 2,56 MB | Adobe PDF | Ver/Abrir |