2026-04-14T02:05:55Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/184542024-06-18T13:55:42Zcom_2072_452955com_2072_2054col_2072_453073

2024-06-18T13:55:42Z urn:hdl:10256/18454 Controlling Two-Photon Action Cross Section by Changing a Single Heteroatom Position in Fluorescent Dyes Ośmiałowski, Borys Petrusevich, Elizaveta F. Antoniak, Magda A. Grela, Izabela Bin Jassar, Mohammed A. Nyk, Marcin Luis Luis, Josep Maria Jędrzejewska, Beata Zaleśny, Robert Jacquemin, Denis Fotons Photons Fisicoquímica Chemistry, Physical and theoretical The optimization of nonlinear optical properties for “real-life” applications remains a key challenge for both experimental and theoretical approaches. In particular, for two-photon processes, maximizing the two-photon action cross section (TPACS), the figure of merit for two-photon bioimaging spectroscopy, requires simultaneously controlling all its components. In the present Letter, a series of difluoroborates presenting various heterocyclic rings as an electron acceptor have been synthesized and their absorption, fluorescence, photoisomerization, and two-photon absorption features have been analyzed using both experimental and theoretical approaches. Our results demonstrate that the TPACS values can be fine-tuned by changing the position of a single heteroatom, which alters the fluorescence quantum yields without changing the intrinsic two-photon absorption cross section. This approach offers a new strategy for optimizing TPACS J.M.L. is grateful for financial support from the Spanish MICIN PGC2018-098212-B-C22 and the Catalan DIUE 2017SGR39 2024-06-18T13:55:42Z 2024-06-18T13:55:42Z 2020-07-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion peer-reviewed http://hdl.handle.net/10256/18454 info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpclett.0c01438 info:eu-repo/semantics/altIdentifier/issn/1948-7185 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-098212-B-C22/ES/DESCOMPOSICION EN EL ESPACIO REAL DE PROPIEDADES OPTICAS NO LINEALES PARA EL DISEÑO RACIONAL DE MATERIALES OPTOELECTRONICOS/ Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess American Chemical Society (ACS) Journal of Physical Chemistry Letters, 2020, vol. 11, núm. 15, p. 5920–5925 Articles publicats (D-Q)