Abstract
A novel Bi-based crystalline molecular materials Bi(C2O4)3(NMP)2 (Bi-NMP) have successfully synthesized by the reaction of Bi(NO3)3.5H2O, N-Methylpyrrolidone (NMP) in the solution of methyl alcohol. Structural analysis indicates that the Bi-NMP shows a novel 2D planar structure. The luminescent behavior for the Bi-NMP has been investigated at room temperature. The results have shown that Bi-NMP can be used as a chemical sensor for multifunctional testing such as aliphatic amines and aromatic amines detection, because of its strong fluorescence properties. When detecting cyclohexylamine (CHA), the K was 2.5 × 105 M−1, and the detection limit was 0.99 μM. When detecting m-phenylenediamine(MPD), the Ksv was 5.5 × 103 M−1, and the detection limit was 45.7 μM. When detecting o-phenylenediamine (OPD), the K was 5.4 × 103 M−1, and the detection limit of Bi-NMP was calculated to be 49.9 μM. In particular, for o-phenylenediamine (OPD), Bi-NMP has a unique switching effect. Therefore, Bi-NMP has not only a detection function but also a recognition function for o-phenylenediamine (OPD), m-phenylenediamine (MPD) and p-phenylenediamine (PPD). In addition, white-light emission is achieved through a reasonable tuning proportion by mixing Sm3+ in Bi-NMP.
Published Version
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