Convenient solvatochromic probes for the determination of solvent properties: β-carotene and 2-Chloro-7-nitro-9H-fluorene - El Seoud, Omar A; Pires, Paulo Augusto Rodrigues; Loffredo, Carina; Imran, Muhammad; Pulcini, Paolo D; Corrêa, Michelle F; Mustafa, Rizwana (Journal of the Brazilian Chemical Society, 2013)