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以2-(2-氨基苯基)-1-苯基-1H-菲并[9,10-d]咪唑和对苯二甲醛为原料,合成了以Schiff碱链接的双菲并咪唑衍生物(BPII),并采用红外和核磁对所合成的化合物进行了结构表征和确认。通过紫外和荧光光谱实验表明,主体化合物BPII在DMF/HEPES的混合溶液中(V(DMF)∶V(HEPES)=7∶3)对Fe~(3+)具有选择性识别性能,且不受其他共存金属离子的干扰。荧光滴定实验表明,主体化合物BPII对Fe~(3+)的检出限为2.08μmol/L,可用于真实水样中Fe~(3+)浓度的检测。Job’s曲线确定了主体化合物BPII与Fe~(3+)之间形成物质的量比为1∶1的金属配合物。
Schiff base-linked bisphenanthreneimidazole derivatives were synthesized from 2- (2-aminophenyl) -1-phenyl-1H-phenanthro [9,10-d] imidazole and terephthalaldehyde BPII). The synthesized compounds were characterized and confirmed by IR and NMR. The results of UV and fluorescence spectroscopy showed that the host compound BPII has a selective recognition of Fe 3+ in a mixed solution of DMF / HEPES (V (DMF): V (HEPES) = 7: 3) Other coexistence of metal ions interference. Fluorescence titration experiments showed that the detection limit of host compound BPII to Fe 3+ was 2.08μmol / L, which can be used to detect the concentration of Fe 3+ in real water samples. Job’s curve confirms the metal complexes with the mass ratio of 1: 1 between the host compounds BPII and Fe ~ (3+).