Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 687-697 |
| Journal | Advanced Functional Materials |
| Volume | 26 |
| Issue number | 5 |
| Early online date | 11 Jan 2016 |
| DOIs | |
| Publication status | Published - 2 Feb 2016 |
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Interactions between an aryl thioacetate-functionalized Zn(II) porphyrin and graphene oxide. / Mao, Boyang; Calatayud, David G.; Mirabello, Vincenzo; Hodges, Benjamin J.; Martins, José Alberto Ribeiro; Botchway, Stanley W.; Mitchels, J. M. ; Pascu, Sofia I.
In: Advanced Functional Materials, Vol. 26, No. 5, 02.02.2016, p. 687-697.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Interactions between an aryl thioacetate-functionalized Zn(II) porphyrin and graphene oxide
AU - Mao, Boyang
AU - Calatayud, David G.
AU - Mirabello, Vincenzo
AU - Hodges, Benjamin J.
AU - Martins, José Alberto Ribeiro
AU - Botchway, Stanley W.
AU - Mitchels, J. M.
AU - Pascu, Sofia I.
PY - 2016/2/2
Y1 - 2016/2/2
N2 - 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.
AB - 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.
UR - http://dx.doi.org/10.1002/adfm.201504147
U2 - 10.1002/adfm.201504147
DO - 10.1002/adfm.201504147
M3 - Article
VL - 26
SP - 687
EP - 697
JO - Advanced Functional Materials
JF - Advanced Functional Materials
SN - 1616-301X
IS - 5
ER -