Details

Autor(en) / Beteiligte

• Ośmiałowski, Borys
• Petrusevich, Elizaveta F
• Antoniak, Magda A
• Grela, Izabela
• Bin Jassar, Mohammed A
• Nyk, Marcin
• Luis, Josep M
• Jędrzejewska, Beata
• Zaleśny, Robert
• Jacquemin, Denis

Titel

Controlling Two-Photon Action Cross Section by Changing a Single Heteroatom Position in Fluorescent Dyes

Ist Teil von

• The journal of physical chemistry letters, 2020-08, Vol.11 (15), p.5920-5925

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2020

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• 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.