Volume 60, Issue 16 pp. 9120-9126
Research Article

Unveiling the Photoinduced Electron-Donating Character of MoS2 in Covalently Linked Hybrids Featuring Perylenediimide

Ioanna K. Sideri

Ioanna K. Sideri

Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece

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Youngwoo Jang

Youngwoo Jang

Department of Chemistry, University of North Texas, 1155 Union Circle, 305070, Denton, TX, 76203-5017 USA

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Jose Garcés-Garcés

Jose Garcés-Garcés

Área de Química Orgánica, Instituto de Bioingeniería, Universidad Miguel Hernández, 03202 Elche, Spain

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Prof. Dr. Ángela Sastre-Santos

Prof. Dr. Ángela Sastre-Santos

Área de Química Orgánica, Instituto de Bioingeniería, Universidad Miguel Hernández, 03202 Elche, Spain

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Dr. Ruben Canton-Vitoria

Dr. Ruben Canton-Vitoria

Department of Chemistry, Nagoya University, Nagoya, 464-8602 Japan

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Prof. Dr. Ryo Kitaura

Prof. Dr. Ryo Kitaura

Department of Chemistry, Nagoya University, Nagoya, 464-8602 Japan

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Prof. Dr. Fernando Fernández-Lázaro

Corresponding Author

Prof. Dr. Fernando Fernández-Lázaro

Área de Química Orgánica, Instituto de Bioingeniería, Universidad Miguel Hernández, 03202 Elche, Spain

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Prof. Dr. Francis D'Souza

Corresponding Author

Prof. Dr. Francis D'Souza

Department of Chemistry, University of North Texas, 1155 Union Circle, 305070, Denton, TX, 76203-5017 USA

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Prof. Dr. Nikos Tagmatarchis

Corresponding Author

Prof. Dr. Nikos Tagmatarchis

Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece

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First published: 09 February 2021
Citations: 23

Graphical Abstract

The well-known electron acceptor perylenediimide (PDI) is covalently attached to semiconducting MoS2, thus exposing the MoS2 material's electron donating potential in the novel MoS2–PDI hybrid.

Abstract

The covalent functionalization of MoS2 with a perylenediimide (PDI) is reported and the study is accompanied by detailed characterization of the newly prepared MoS2-PDI hybrid material. Covalently functionalized MoS2 interfacing organic photoactive species has shown electron and/or energy accepting, energy reflecting or bi-directional electron accepting features. Herein, a rationally designed PDI, unsubstituted at the perylene core to act as electron acceptor, forces MoS2 to fully demonstrate for the first time its electron donor capabilities. The photophysical response of MoS2-PDI is visualized in an energy-level diagram, while femtosecond transient absorption studies disclose the formation of MoS2.+-PDI.− charge separated state. The tunable electronic properties of MoS2, as a result of covalently linking photoactive organic species with precise characteristics, unlock their potentiality and enable their application in light-harvesting and optoelectronic devices.

Conflict of interest

The authors declare no conflict of interest.

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