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Main observation and conclusion: One near‐infrared (NIR) luminescent octanuclear Zn(II)‐Yb(III) complex [Zn6Yb2L4(OAc)2(DMF)EtOH] (1) was obtained from a new multidentate Schiff base ligand. It exhibits interesting luminescent sensing activity to antibiotics, in particular to nitrofuran antibiotics (NFAs) with high sensitivity due to the inner filter effect. The NIR luminescence quenching constants and limits of the detection of the complex towards NFAs are 2.9 × 104—5.5 × 104 L/mol and 1.27—2.38 μmol/L, respectively. Its high luminescence sensitivity to NFAs is not changed with the existence of other antibiotics. [ABSTRACT FROM AUTHOR]

A nanoscale Yb(III) complex [Yb 6 (L1) 2 (L2) 4 (OH) 4 (CF 3 SO 3) 2 (DMF) 2 (EtOH) 4 ]·2(CF 3 SO 3)·2OH (1) with Schiff base ligand N,N′-bis(3-methoxysalicylidene)(binaphthyl)-1,4-diamine (H 2 L1) and salicylaldehyde ligand 3-methoxysalicylaldehyde (H 2 L2) was synthesized. Upon excitation of the ligand-centered absorption bands, 1 displays typical NIR luminescence of Yb(III). Interestingly, it shows lanthanide luminescence response to anions and nitro explosives, especially with high sensitivity to F− and PA. Meanwhile, the quenching effect of F− and PA to the lanthanide luminescence of 1 is not affected by the existence of other anions and explosives. Image 1 • The complex shows a nanoscale blocky structure. • The complex displays typical NIR lanthanide luminescence. • The complex exhibits NIR luminescence response to anions and explosives. [ABSTRACT FROM AUTHOR]