The Interplay of Conjugation and Metal Coordination in Tuning the Electron Transfer Abilities of NTA-Graphene Based Interfaces
| Autor: | Bartosz Trzaskowski, Magdalena Kaźmierczak, Silvio Osella |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Nitrilotriacetic Acid
Chemical Phenomena QH301-705.5 Electrons work function chemisorption DFT Catalysis Article Inorganic Chemistry Electron Transport Coordination Complexes Physical and Theoretical Chemistry Biology (General) Molecular Biology QD1-999 Spectroscopy Molecular Structure Organic Chemistry graphene charge transfer General Medicine Models Theoretical Computer Science Applications self-assembled monolayer Chemistry Metals Algorithms |
| Zdroj: | International Journal of Molecular Sciences, Vol 23, Iss 543, p 543 (2022) International Journal of Molecular Sciences International Journal of Molecular Sciences; Volume 23; Issue 1; Pages: 543 |
| ISSN: | 1661-6596 1422-0067 |
| Popis: | An artificial leaf is a concept that not only replicates the processes taking place during natural photosynthesis but also provides a source of clean, renewable energy. One important part of such a device are molecules that stabilize the connection between the bioactive side and the electrode, as well as tune the electron transfer between them. In particular, nitrilotriacetic acid (NTA) derivatives used to form a self-assembly monolayer chemisorbed on a graphene monolayer can be seen as a prototypical interface that can be tuned to optimize the electron transfer. In the following work, interfaces with modifications of the metal nature, backbone saturation, and surface coverage density are presented by means of theoretical calculations. Effects of the type of the metal and the surface coverage density on the electronic properties are found to be key to tuning the electron transfer, while only a minor influence of backbone saturation is present. For all of the studied interfaces, the charge transfer flow goes from graphene to the SAM. We suggest that, in light of the strength of electron transfer, Co2+ should be considered as the preferred metal center for efficient charge transfer. |
| Databáze: | OpenAIRE |
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