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oai:riuma.uma.es:10630/361072026-02-03T11:19:01Zcom_10630_2254col_10630_37953

Extended Alkenyl and Alkynyl Benzotriazoles with enhanced Two‐Photon Absorption properties as a promising alternative to Benzothiadiazoles Torres-Moya, Ivan Benítez-Martín, Carlos Donoso, Beatriz Tardio, Carlos Martin, Raul Carrillo, Jose Ramon Diaz-Ortiz, Angel Nájera-Albendín, Francisco Prieto, Pilar Perez-Inestrosa, Ezequiel Fluorescencia A series of donor–p–acceptor–p–donor (D-p-A-p-D) benzoazole dyes with 2H-benzo[d][1,2,3]triazole or BTDcores have been prepared and their photophysical proper-ties characterized. The properties of these compounds dis-play remarkable differences, mainly as a result of the elec-tron-donor substituent. Dyes with the best properties havevisible-light absorption over l = 400 nm, large Stokes shiftsin the range of about 3500–6400 cm@1, and good fluores-cence emission with quantum yields of up to 0.78. The two-photon absorption properties were also studied to establishthe relationship between structure and properties in the dif-ferent compounds synthesized. These results provided crosssections of up to 1500 GM, with a predominance of S2! S0transitions and a high charge-transfer character. Time-depen-dent DFT calculations supported the experimental results. 2025-01-10T08:33:15Z 2025-01-10T08:33:15Z 2019 journal article I. Torres-Moya, C. Benitez-Martin, B. Donoso, C. Tardío, R. Martín, J. R. Carrillo, Á. Díaz-Ortiz, F. Najera, P. Prieto, E. Perez-Inestrosa, Extended Alkenyl and Alkynyl Benzotriazoles with enhanced Two‐Photon Absorption properties as a promising alternative to Benzothiadiazoles. Chem. Eur. J. 2019, 25, 15572 https://hdl.handle.net/10630/36107 10.1002/chem.201903493 eng open access Wiley-VCH Verlag GmbH & Co