Highly selective fluorescent recognition of Zn2+ based on naphthalene macrocyclic derivative |
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Authors: | Azadbakht Reza Parviz Maisam Tamari Esmail Keypour Hassan Golbedaghi Reza |
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Affiliation: | aDepartment of chemistry, Payame Noor University, Hamedan, Iran;bFaculty of chemistry, Bu Ali Sina University, Hamedan, Iran |
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Abstract: | A new macrocyclic chemosensor containing two naphthalene fluorophores has been synthesized. The fluorescent properties of this receptor has been studied in the presence of various metal ions such as Na+, Ag+, Cr3+, Mn2+, Fe3+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+ and Pb2+. When increasing concentrations of Zn2+ ions were introduced, the emission of L was drastically increased (EFE = 4.34). This special change was not observed when other metal ions were used; such highly selective fluorescent response indicates that this receptor can easily discriminate Zn2+ ions from other similar species. Model calculations at DFT level further suggest the possible interaction mode, and relatively steric position between the host and guest also influence the optical response. |
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Keywords: | Chemosensor Fluorescence Macrocycle Naphthalene Zn sensor |
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