Interactions between an aryl thioacetate-functionalized Zn(II) porphyrin and graphene oxide

Boyang Mao, David G. Calatayud, Vincenzo Mirabello, Benjamin J. Hodges, José Alberto Ribeiro Martins, Stanley W. Botchway, J. M. Mitchels, Sofia I. Pascu

Research output: Contribution to journalArticle

7 Citations (Scopus)
133 Downloads (Pure)

Abstract

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 UV–vis, 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.
Original languageEnglish
Pages (from-to)687-697
JournalAdvanced Functional Materials
Volume26
Issue number5
Early online date11 Jan 2016
DOIs
Publication statusPublished - 2 Feb 2016

Fingerprint Dive into the research topics of 'Interactions between an aryl thioacetate-functionalized Zn(II) porphyrin and graphene oxide'. Together they form a unique fingerprint.

  • Cite this

    Mao, B., Calatayud, D. G., Mirabello, V., Hodges, B. J., Martins, J. A. R., Botchway, S. W., Mitchels, J. M., & Pascu, S. I. (2016). Interactions between an aryl thioacetate-functionalized Zn(II) porphyrin and graphene oxide. Advanced Functional Materials, 26(5), 687-697. https://doi.org/10.1002/adfm.201504147