Triplet formation inhibits amplified spontaneous emission in perylene-based polycyclic aromatic hydrocarbons
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Title: | Triplet formation inhibits amplified spontaneous emission in perylene-based polycyclic aromatic hydrocarbons |
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Authors: | Moles Quintero, Sergio | Mira-Martínez, Jose C. | Zou, Ya | Díaz-García, Marcos | Boj, Pedro G. | Wu, Jishan | Díaz-García, María A. | Marín-Beloqui, Jose M. | Casado, Juan |
Research Group/s: | Física de la Materia Condensada |
Center, Department or Service: | Universidad de Alicante. Departamento de Física Aplicada | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía | Universidad de Alicante. Instituto Universitario de Materiales |
Keywords: | Polycyclic Aromatic Hydrocarbons | Amplified Spontaneous Emission | Properties of polystyrene |
Issue Date: | 26-Feb-2024 |
Publisher: | Royal Society of Chemistry |
Citation: | Journal of Material Chemistry C. 2024, 12: 5239-5246. https://doi.org/10.1039/D3TC04740G |
Abstract: | Polycyclic Aromatic Hydrocarbons (PAHs) have demonstrated potential as active laser materials, showing good Amplified Stimulated Emission (ASE) properties. However, the molecular origin of their ASE properties is still unclear and depends on the particular compound. In this work we study the ASE properties of polystyrene films hosting three different perylene-based PAHs YZ-1, YZ-2 and YZ-3, where only YZ-3 has displayed ASE. Their molecular structure has been systematically changed to establish the connection between their molecular structure and their ASE properties. A complete spectroscopic study, with ground state and time-resolved techniques, show that, even at low yields, triplets play a critical role as a major loss mechanism. Their slow relaxation to ground state completely hinders the required unbalance of the S1 and S0 states for succesful ASE. Quantum chemical calculations suggest that a lower triplet density of states for YZ-3 is responsible for the blockage in triplet formation and, therefore, does not restrict ASE. This work not only presents a new PAH showing ASE, but also unequivocable proves the massive importance of triplet states in the development of organic lasers. |
Sponsor: | JW acknowledges financial support from A*STAR AME grant (A20E5c0089). The group at the University of Alicante thanks financial support from the “Ministerio de Ciencia e Innovación” (MCIN) of Spain and the European Regional Development Fund (grant No. PID2020-119124RB-I00) and from the Generalitat Valenciana though grant No. AICO/2021/093. Besides, this study is part of the Advanced Materials program supported by the Spanish MCIN with funding from European Union Next Generation EU and by Generalitat Valenciana (grant no. MFA/2022/045). The group at the UA thanks Dr. J.M Villalvilla and Dr. J.A. Quintana for useful discussions. We also thank the Research Central Services (SCAI) of the University of Málaga for the access to the EVI, EEL and MENL to perform ground state and transient spectroscopic characterisation. JC thanks funding provided by MINECO/FEDER (PID2021-127127NB-I00, PID2019-110305GB-I00) and Junta de Andalucía (PROYEXCEL-0328). |
URI: | http://hdl.handle.net/10045/141213 |
ISSN: | 2050-7526 (Print) | 2050-7534 (Online) |
DOI: | 10.1039/D3TC04740G |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. |
Peer Review: | si |
Publisher version: | https://doi.org/10.1039/D3TC04740G |
Appears in Collections: | INV - Física de la Materia Condensada - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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Moles-Quintero_etal_2024_JMaterChemC.pdf | 1,65 MB | Adobe PDF | Open Preview | |
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