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Canton-Vitoria, R., Sayed-Ahmad-Baraza, Y., Pelaez-Fernandez, M., Arenal, R., Bittencourt, C., Ewels, C. P. & Tagmatarchis, N. (2017) Functionalization of MoS2 with 1,2-dithiolanes: toward donor-acceptor nanohybrids for energy conversion. Npj 2d Materials and Applications, 1 UNSP 13.
Added by: Richard Baschera (2017-10-24 13:30:34) Last edited by: Richard Baschera (2017-10-24 13:39:19) |
| Type de référence: Article DOI: 10.1038/s41699-017-0012-8 Numéro d'identification (ISBN etc.): 2397-7132 Clé BibTeX: CantonVitoria2017 Voir tous les détails bibliographiques  |
Catégories: INTERNATIONAL, PMN Créateurs: Arenal, Bittencourt, Canton-Vitoria, Ewels, Pelaez-Fernandez, Sayed-Ahmad-Baraza, Tagmatarchis Collection: Npj 2d Materials and Applications |
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The covalent functionalization of exfoliated semiconducting MoS2 by 1,2-dithiolanes bearing an ethylene glycol alkyl chain terminated to a butoxycarbonyl-protected amine and a photoactive pyrene moiety is accomplished. The MoS2-based nanohybrids were fully characterized by complementary spectroscopic, thermal, and microscopy techniques. Markedly, density functional theoretical studies combined with X-ray photoelectron spectroscopy analysis demonstrate preferential edge functionalization, primarily via sulfur addition along partially sulfur saturated zig-zag MoS2 molybdenum-edges, preserving intact the 2D basal structure of functionalized MoS2-based nanohybrids as confirmed by high-resolution transmission electron microscopy and electron energy loss spectroscopy. Furthermore, in the MoS2-pyrene hybrid, appreciable electronic interactions at the excited state between the photoactive pyrene and the semiconducting MoS2 were revealed as inferred by steady-state and time-resolved photoluminescence spectroscopy, implying its high potentiality to function in energy conversion schemes.
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