Avellanal Zaballa, EdurnePrieto Castañeda, AlejandroDíaz Norambuena, CarolinaBañuelos Prieto, JorgeRodríguez Agarrabeitia, AntoniaGarcía Moreno, InmaculadaMoya Cerero, Santiago de laOrtiz García, María Josefa2023-06-172023-06-172021-04-191463-907610.1039/d1cp00991ehttps://hdl.handle.net/20.500.14352/8413Submitted 05 Mar 2021 / Accepted 19 Apr 2021 / First published 19 Apr 2021. This journal is © the Owner Societies 2021. Electronic supplementary information (ESI) available: Synthetic, photophysical, computational and laser details, as well as characterization data including NMR spectra of the new compounds, as well as Table S1 and Fig. S1–S3. See DOI: 10.1039/d1cp00991eHerein we detail a protocol to design dyads and triads based solely on BODIPY dyes as halogen-free singlet oxygen photosensitizers or energy transfer molecular cassettes. The conducted photonic characterization reveals the key role of the BODIPY–BODIPY linkage to finely modulate the balance between the triplet state population and fluorescence decay.engjournal articlehttps://doi.org/10.1039/D1CP00991Ehttp://pubs.rsc.org/en/Journals/JournalIssues/CPrestricted access546‑046.45544.522.121.2546.21Energy transferHarvestersPhotosensitizersBodipy dyesFluorescence decaysHalogen-freeSinglet oxygenTriplet stateMolecular oxygenQuímica física (Química)Química orgánica (Química)2306 Química Orgánica