Two-photon absorption in a series of 2,6-disubstituted BODIPY dyes
| Autor: | Stefan Bräse, Leonardo Werneck Trindade de Barros, Angela Bihlmeier, Thiago A. S. Cardoso, Anna Hörner, Dominik K. Kölmel, Carlos Henrique de Brito Cruz, Lazaro A. Padilha, Danny Wagner |
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| Rok vydání: | 2017 |
| Předmět: |
Photon
Series (mathematics) Absorption spectroscopy Absorption cross section General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Two-photon absorption 0104 chemical sciences chemistry.chemical_compound chemistry Absorption band Physical and Theoretical Chemistry BODIPY 0210 nano-technology Absorption (electromagnetic radiation) |
| Zdroj: | Physical Chemistry Chemical Physics. 19:21683-21690 |
| ISSN: | 1463-9084 1463-9076 |
| DOI: | 10.1039/c6cp07849d |
| Popis: | We report on the two-photon absorption spectra of a series of 2,6-disubstituted BODIPY dyes. Depending on the substituents, we observe increasing two-photon absorption cross sections with values up to 350 GM compared to 70 GM in the unsubstituted dye. Quantum chemical calculations are performed to assign the absorption bands and to understand the factors controlling the size of the two-photon absorption cross section. Both the maximum of the two-photon absorption band as well as the red-shift of the whole spectrum correlate with the ability of the substituents to extend the π-electron system of the dye. The above-mentioned intense two-photon absorption band corresponds to the absorption of photons with 1.3 eV, which is at the first near-infrared transparency window for biological tissues. The dyes could thus be suitable for bio-imaging applications. |
| Databáze: | OpenAIRE |
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