SYNTHESIS OF CYCLEN BODIPY DYAD AND ITS METAL COMPLEXES: EVALUATION OF ANION RECOGNITION FEATURES

Abstract

In this study, a new compound, viz. 4,4-Difluoro-8-(1,4,7,10-tetraazacyclododecane)methyl-1,3,5,7-tetramethyl-2,6-diethyl-4-bora-3a,4a-diaza-s-indacene (1), and its metal complexes (1-Zn,1-Cu,and 1-Ni) are synthesized and spectroscopically characterized (UV-Vis, luminescence-fluorescence, NMR, FTIR, and MS). Anion sensing properties of compound 1and its metal complexes (1-Zn,1-Ni and1-Cu) are tested in the presence of various anionic species in acetonitrile media. Fluorescence measurements indicated that, 1-Ni and1-Cu do not have any selectivity towards various anions except weak interactions.On the other hand1-Znshows good response and selectivity toward acetate ion based on fluorescence enhancement. In addition, JOB studies demonstrate that the interaction between 1-Znand acetate ion were with a ratio of 1:2 and limit of detection (LOD) of 1-Znwas calculated as 4.76x10^-6M for acetate ion detection. Moreover, 1-Znprovides a certain change in color in the presence of acetate. The results demonstrate that 1-Zncan be utilized for fluorogenic and naked eye detection of acetate anion.

Keywords

• BODIPY,Cyclen,Acetate Ion,Zinc(II)

References

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