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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: J Fluoresc. 2011 Jul 12;21(6):2173–2184. doi: 10.1007/s10895-011-0919-y

Table 1.

Effect of B ring substituents on the absorption maximum of aurone derivatives

graphic file with name nihms-729767-t0004.jpg Absorption (λmax, nm)
Ethanol Dioxane
4′-H (aurone) 377 377
4′-Br 381 383
4′-NO2 384 386
4′-NHCOCH3 (1) 395 399
2′-OH 402 398
4′-OCH3, 3′-OH 414 412
4′-NH2 (2) 441 426