RT Journal Article T1 Benzotriazole-based multidonor-acceptor systems as attractive two-photon absorption dye platforms A1 Benitez-Martin, Carlos A1 Donoso, Beatriz A1 Torres-Moya, Ivan A1 Herrera, Jesus A1 Diaz-Ortiz, Angel A1 Najera, Francisco A1 Prieto, Pilar A1 Perez-Inestrosa, Ezequiel K1 Two-photon absorption K1 Fluorescence K1 DFT calculations K1 Benzotriazole dyes K1 Optical-data storage K1 Absorbing chromophores K1 Fluorescent-probe K1 Red-fluorescent K1 Wave-guide K1 Design K1 Benzothiadiazole K1 Emission K1 Thiadiazoloquinoxaline K1 Initiators AB Pyrazine-decorated benzotriazole cores allow the orthogonal combination of two dipolar systems within a single molecule. A series of this type of derivatives was synthesized and their photophysical features were studied. The properties of these compounds showed remarkable differences in function depending on the substitution in the pyrazine ring of the benzotriazole core. Furthermore, the two-photon absorption property (2PA) was studied to determine the structure-properties relationship for the reported compounds. The best dye achieved a crosssection of 1532 GM, which was higher than values previously obtained for similar D-pi-A-pi-D benzotriazole derivatives. TD-DFT calculations, which supported the experimental observations, indicating the interaction between the two dipolar systems was responsible for enhancing the 2 PA properties and favoring bathochromic shifts. PB Elsevier SN 0143-7208 YR 2022 FD 2022-02-09 LK http://hdl.handle.net/10668/22157 UL http://hdl.handle.net/10668/22157 LA en NO Benitez-Martin C, Donoso B, Torres-Moya I, Herrera J, Díaz-Ortiz Á, Najera F, et al. Benzotriazole-based multidonor-acceptor systems as attractive twophoton absorption dye platforms. Dyes and Pigments. 2022, (200). 110149 DS RISalud RD Apr 6, 2025