科研之友
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摘要
Effect of the addition of six different anions on the absorption and fluorescence spectra of acridine yellow G (AYG) was examined. Only the F(-) anion could induce a visible color change observable with naked eye and a strong fluorescence quenching with K(SV) of 8.3 x 10(4) mol(-1) L in CH(3)CN solutions. Calculated results of the interaction between the F-anion and acridine yellow G using the B3LYP/6-31G(d) program showed that the intermolecular charge transfer through the formation of an H-bond between AYG and F(-) is an essential sensor mechanism.
