There are a maximum absorption peak at 560 nm and a fluorescence peak at 570 nm for butyl rodamine B(BRDB) in the medium of 0. 2 mol/L HC1. The DBS- and BRDB+ combine into hydrophobia DBS-BRDB association molecule by means of static gravitation.

• 在0.；2 mol/L HCl介质中；丁基罗丹明B(BRDB)分别在560 nm和570 nm处有一个吸收峰和荧光峰。