Noncovalent Functionalization and Charge Transfer in Antimonene

Antimonene, a novel group 15 two‐dimensional material, is functionalized with a tailormade perylene bisimide through strong van der Waals interactions. The functionalization process leads to a significant quenching of the perylene fluorescence, and surpasses that observed for either graphene or blac...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2017-11, Vol.56 (46), p.14389-14394
Main Authors: Abellán, Gonzalo, Ares, Pablo, Wild, Stefan, Nuin, Edurne, Neiss, Christian, Miguel, David Rodriguez‐San, Segovia, Pilar, Gibaja, Carlos, Michel, Enrique G., Görling, Andreas, Hauke, Frank, Gómez‐Herrero, Julio, Hirsch, Andreas, Zamora, Félix
Format: Article
Language:English
Subjects:
antimonene
Charge transfer
Communication
Communications
electron microscopy
Environmental conditions
Flakes
Fluorescence
Mathematical analysis
Microscopy
Phosphorus
Quenching (cooling)
Scanning
surface chemistry
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Summary:Antimonene, a novel group 15 two‐dimensional material, is functionalized with a tailormade perylene bisimide through strong van der Waals interactions. The functionalization process leads to a significant quenching of the perylene fluorescence, and surpasses that observed for either graphene or black phosphorus, thus allowing straightforward characterization of the flakes by scanning Raman microscopy. Furthermore, scanning photoelectron microscopy studies and theoretical calculations reveal a remarkable charge‐transfer behavior, being twice that of black phosphorus. Moreover, the excellent stability under environmental conditions of pristine antimonene has been tackled, thus pointing towards the spontaneous formation of a sub‐nanometric oxide passivation layer. DFT calculations revealed that the noncovalent functionalization of antimonene results in a charge‐transfer band gap of 1.1 eV. Flake off: Reported for the first time is the noncovalent functionalization of antimonene using perylene bisimides (PDI). The significant quenching of the fluorescence of the PDI allows straightforward characterization of the antimonene flakes deposited on Si/SiO2 substrates. This work paves the way for the development of novel applications based on antimonene by tailoring its electronic properties.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201702983