Chalcone as potential nonlinear optical material: a combined theoretical, structural, and spectroscopic study - Custodio, Jean M. F.; D’Oliveira, Giulio D. C.; Gotardo, Fernando; Cocca, Leandro H. Z.; De Boni, Leonardo; Perez, Caridad N.; Maia, Lauro J. Q.; Valverde, Clodoaldo; Osório, Francisco A. P.; Napolitano, Hamilton B. (Journal of Physical Chemistry C, 2019)