Thermal Control of Intermolecular Interactions and Tuning of Fluorescent-State Energies
| Autor: | Loredana Latterini, Jordi Hernando, Daniel Ruiz-Molina, Giulia Zampini, Claudio Roscini, Giuseppina Massaro |
|---|---|
| Přispěvatelé: | Agencia Estatal de Investigación (España), Università degli Studi di Perugia, Ministero dell'Istruzione, dell'Università e della Ricerca, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Generalitat de Catalunya, Ruiz Molina, Daniel [0000-0002-6844-8421], Hernando, Jordi [0000-0002-1126-4138], Latterini, Loredana [0000-0002-1021-9423], Ruiz Molina, Daniel, Hernando, Jordi, Latterini, Loredana |
| Rok vydání: | 2019 |
| Předmět: |
Fluorescence properties
Multi-chromophoric aggregates Fluorophore Materials science 02 engineering and technology 010402 general chemistry Electronic Optical and Magnetic Materials Energy (all) Physical and Theoretical Chemistry Surfaces Coatings and Films 01 natural sciences Coatings and Films Bimolecular process chemistry.chemical_compound Ground-state interactions Liquid to solid transitions Electronic Optical and Magnetic Materials Energy transfer process Intermolecular interactions Anthracene Intermolecular distance Intermolecular force State (functional analysis) 021001 nanoscience & nanotechnology Thermal control Fluorescence 0104 chemical sciences Surfaces General Energy chemistry Chemical physics Excited state 0210 nano-technology Luminescence |
| Zdroj: | Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona Digital.CSIC. Repositorio Institucional del CSIC instname Recercat: Dipósit de la Recerca de Catalunya Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) Recercat. Dipósit de la Recerca de Catalunya |
| ISSN: | 1932-7455 1932-7447 2015-7061 |
| DOI: | 10.1021/acs.jpcc.8b09774 |
| Popis: | The prospect of tuning the energy of emitting states through external stimuli opens the possibility of shifting the energy of emitting units on demand and controlling the bimolecular processes they are involved in. To prove this concept, the fluorescence properties of three differently 9,10-substituted anthracene (ANT) derivatives are investigated in a phase-change material (eicosane). The liquid-to-solid transition of the medium leads to an increase of the local dye concentration, a shortening of the intermolecular distances, and the establishment of excited- and ground-state interactions. As a result, a new contribution to the overall luminescence that derives from the downshifted emission (up to 0.7 eV) from excimer-like species is observed. The addition of a second dye (a Pt-porphyrin) reduces the efficiency of excited- and ground-state complexes between fluorophore units, although it does not prevent the formation of multichromophoric aggregates where interactions between Pt-porphyrin and the emissive state of ANT derivatives are observed. The emission of excimer-like species, formed upon solidification of the medium, can be exploited to further down-shift the fluorescence through energy-transfer processes to a suitable energy acceptor, such as rubrene. The University of Perugia and the Ministero Istruzione dell’Università e della Ricerca (MIUR) are thanked for the financial support through the program “Dipartimenti di Eccellenza 2018–2022” (grant AMIS). This work was supported by project MAT2015-70615-R and CTQ2015-65439-R from the Spanish Government and by FEDER funds. ICN2 acknowledges support from the Severo Ochoa Program (MINECO, grant SEV-2017-0706). The work is funded by the CERCA Programme/Generalitat de Catalunya. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|