147783 20260217205541.0 doi 10.1002/adom.202400965 sideral 141269 ART-2024-141269 eng Martín, Raúl Disrupting J-Aggregation in Triazatruxene Dimers to Develop Responsive Luminescent Inks for Anti-Counterfeiting Applications 2024 Access copy available to the general public Unrestricted The fight against counterfeiting is a crucial concern for economies around the world, underscoring the urgent need for effective measures to ensure the legitimacy of products and documents. Luminescent security inks have emerged as effective tools in this battle. The third generation of these inks, incorporating stimuli‐responsive organic materials, enables unique efficiency. In this work, the stimuli‐responsive behavior of three trialkylated triazatruxene dimers (TRI1, TRI2, and TRI3), endowed with N‐alkyl chains of different length is investigated. Among them, TRI3, with three flexible dodecyl chains, shows remarkable stimuli‐responsive fluorescence that is attributed to thermally or shear‐induced phase transitions between a tetragonal columnar phase and a discotic‐nematic liquid crystal phase. Such transformation involves the breakdown of highly emissive J‐aggregates with a strong influence on the resulting emissive color. Interestingly, these stimuli‐triggered transformations are spontaneously reversed, which renders this compound very interesting in the search of third‐generation security inks. info:eu-repo/grantAgreement/ES/AEI/CEX2023-001286-S info:eu-repo/grantAgreement/ES/AEI/PID2022-139548NB-I00 info:eu-repo/grantAgreement/ES/AEI/PID2023-146811NA-I00 info:eu-repo/grantAgreement/ES/AEI/PID2023-150022NB-I00 info:eu-repo/grantAgreement/ES/DGA/E47-23R info:eu-repo/semantics/openAccess by-nc https://creativecommons.org/licenses/by-nc/4.0/deed.es 7.2 2024 OPTICS 15 / 125 = 0.12 2024 Q1 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 99 / 461 = 0.215 2024 Q1 T1 1.995 2024 Electronic, Optical and Magnetic Materials 2024 Q1 Atomic and Molecular Physics, and Optics 2024 Q1 12.7 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Echeverri, Marcelo González, Francisco de Andrés, Alicia Ruiz Delgado, M. Carmen Concellón, Alberto Universidad de Zaragoza (orcid)0000-0002-8932-9085 Serrano, José Luis Universidad de Zaragoza (orcid)0000-0001-9866-6633 Gómez-Lor, Berta 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 13, 8 (2024), 2400965 [9 pp.] Adv. opt. mater. Advanced Optical Materials 2195-1071 4217988 http://zaguan.unizar.es/record/147783/files/texto_completo.pdf Versión publicada 2803152 http://zaguan.unizar.es/record/147783/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:147783 articulos driver 2026-02-17-20:36:12 ARTICLE