Photophysical properties of flavonoids extracted from Syngonanthus nitens, the golden grass - Berlim, Leonardo Schneider; Bezerra, Arandi Ginane; Pazin, Wallance Moreira; Ramin, Thiago Siqueira; Schreiner, Wido Herwig; Ito, Amando Siuiti (Journal of Luminescence, 2018)