Exploring the two-photon absorption response in short p-chain organic compounds: hydrazones and pyrazolines derivatives.
ARAÚJO, Raiane Sodré de; ABEGÃO, Luis Miguel Gomes; COCCA, Leandro Henrique Zucolotto; SILVA, Aline Alves da; VALLE, Marcelo Siqueira; RODRIGUES JUNIOR, José Joatan; MENDONÇA, Cleber Renato; DE BONI, Leonardo; ALENCAR, Márcio André Rodrigues Cavalcanti de.
ARAÚJO, Raiane Sodré de; ABEGÃO, Luis Miguel Gomes; COCCA, Leandro Henrique Zucolotto; SILVA, Aline Alves da; VALLE, Marcelo Siqueira; RODRIGUES JUNIOR, José Joatan; MENDONÇA, Cleber Renato; DE BONI, Leonardo; ALENCAR, Márcio André Rodrigues Cavalcanti de.
Abstract: We compared the experimental two-photon absorption spectra of two hydrazone derivatives of chalcone (HDC-1 and HDC-2) and two pyrazoline derivatives of dibenzylideneacetone and chalcone (PD-1 and PD-2). The compounds were synthesized by the Claisen-Schmidt reaction and characterized using NMR, FTIR, and UV?Vis. Using femtosecond pulses, the Z-scan technique recorded two-photon absorption cross-section (s2PA) spectra of the investigated compounds, which presented values of s2PA, ranging from ~12 GM to ~50 GM. Such s2PA difference is generally associated with the conjugated chain length and the different functional and peripherical groups used. For example, increasing the p-chain and peripherals donor groups p-OCH3 from HDC-1 to HCD-2 led to a change in the s2PA magnitude (s2PA HDC-1 ~35 GM, s2PA HDC-2 ~50 GM). The modification on the pyrazoline derivatives, i.e., increasing the conjugated chain and adding p-OCH3 in both phenyls in the PD-2 compared to compound PD-1 doubled the s2PA magnitude (s2PPDA-1 ~12 GM, s2PPDA-2 ~22 GM). According to the obtained results and considering the investigated compounds' short p-chain, we could claim that these classes of organic molecules promise nonlinear optical materials for optical limiting due to optical transparency ranging from 450 nm for pyrazolines to 550 nm for hydrazone derivatives.
@article={003193890,author = {ARAÚJO, Raiane Sodré de; ABEGÃO, Luis Miguel Gomes; COCCA, Leandro Henrique Zucolotto; SILVA, Aline Alves da; VALLE, Marcelo Siqueira; RODRIGUES JUNIOR, José Joatan; MENDONÇA, Cleber Renato; DE BONI, Leonardo; ALENCAR, Márcio André Rodrigues Cavalcanti de.},title={Exploring the two-photon absorption response in short p-chain organic compounds: hydrazones and pyrazolines derivatives},journal={Optical Materials},note={v. 152, p. 115448-1-115448-8 + supplementary data},year={2024}}