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Tunable physics through coordination chemistry: formation on oxide surface of Ti and Al chelates with 3-hydroxyflavone capable of electron injection and light emission
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-6039-1865
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-2099-7605
Dipartimento di Fisica, Politecnico di Milano, piazza L. da Vinci 32, 20133 Milano, Italy.
Institute for the Study of Nanostructured Materials, ISMN-CNR, 00015 Monterotondo Stazione, Roma, Italy.
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2022 (English)In: Dalton Transactions, ISSN 1477-9226, E-ISSN 1477-9234, Vol. 51, no 48, p. 18489-18501Article in journal (Refereed) Published
Abstract [en]

The optoelectronic features of 3-hydroxyflavone (3HF) self-assembled on the surface of an n-type semiconducting metal oxide (TiO2) and an insulator (Al2O3) are herein investigated. 3HF molecules use the coordinatively unsaturated metal ions present on the oxide surface to form metal complexes, which exhibit different behaviors upon light irradiation, depending on the nature of the metal ion. Specifically, we show that the photoluminescence of the surface species can be modulated according to the chemical properties of the complex (i.e. the binding metal ion), resulting in solid-state emitters in a high quantum yield (about 15%). Furthermore, photoinduced charge injection can be promoted or inhibited, providing a multifunctional hybrid system.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2022. Vol. 51, no 48, p. 18489-18501
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Physical Chemistry Materials Chemistry
Research subject
Experimental Physics
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URN: urn:nbn:se:ltu:diva-94377DOI: 10.1039/d2dt02195aISI: 000890056000001PubMedID: 36421057Scopus ID: 2-s2.0-85143358695OAI: oai:DiVA.org:ltu-94377DiVA, id: diva2:1714711
Note

Validerad;2023;Nivå 2;2023-02-10 (joosat);

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Available from: 2022-11-30 Created: 2022-11-30 Last updated: 2023-02-24Bibliographically approved

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Solomon, GetachewLandström, AntonConcina, Isabella

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