Abstract
Reported here are the design and fluorescence characters of a NiII/TbIII polymer, [Tb2Ni3(HCAM)6(H2O)12]n (1) (H3CAM = chelidamic acid). Under physiological conditions, the binding of biocompatible water soluble 1 to human serum albumin (HSA) was studied by spectroscopy techniques, which revealed that 1 could inherent the fluorescent light of HSA in a static quencher course and change the HSA second-level structure. The marked enhancement in 1 and its fluorescence intensity provide conclusive evidence that 1 can play the role of a “turn-on” sensor for recognition and detection of HSA in other biological interferents with a Ksv value of 7.68 × 104 M–1 and a detection limit of 0.14 μM. Luminescence experiments show that 1 has high selectivity and sensitivity to MnO4– in other anions. Its quenching efficiency (Ksv) is 5.54 × 103 M–1, and the detection limit is 0.29 μM.
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