Nonlinear absorption investigation in imidazopyridines derivates

Cleber R. Mendonça; André Pelosi; Leando Cocca; Luís Abegão; Lucas Sciuti; Sandrini Piguel; Leonardo De Boni

doi:10.1117/12.2608889

7 March 2022 Nonlinear absorption investigation in imidazopyridines derivates

Cleber R. Mendonça, André Pelosi, Leando Cocca, Luís Abegão, Lucas Sciuti, Sandrini Piguel, Leonardo De Boni

Proceedings Volume PC11998, Organic Photonic Materials and Devices XXIV; PC1199802 (2022) https://doi.org/10.1117/12.2608889
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Imidazopyridine derivatives are purine isosteres that display interesting optical properties and biological applications. Here one reports a spectroscopic investigation in six imidazopyridines derivatives with different chemical groups, leading to changes in the photophysical parameters and nonlinear optical properties. Fluorescence quantum yield, lifetime and anisotropy were performed to obtain information to interpret the nonlinear optical response. The two-photon absorption cross-section spectrum, measured by the Z-scan technique, was modeled by the sum-over-state approach. Higher 2PA cross-section was observed when two electron acceptor groups were added to the imidazopyridines core. Yet, the spectral position of higher excited states was show to contribute to the 2PA cross-section.

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Citation Download Citation

Cleber R. Mendonça, André Pelosi, Leando Cocca, Luís Abegão, Lucas Sciuti, Sandrini Piguel, and Leonardo De Boni "Nonlinear absorption investigation in imidazopyridines derivates", Proc. SPIE PC11998, Organic Photonic Materials and Devices XXIV, PC1199802 (7 March 2022); https://doi.org/10.1117/12.2608889

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