1. Two 3D Zn(II)/Co(II)-CPs as fluorescent sensors for turn-on and red-shift sensing of tryptophan and norfloxacin.
- Author
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Zhao, Zi-Hao, Zhao, Fang-Hua, Li, Zhong-Lin, Li, Yu-Shuo, Feng, Rui, You, Jin-Mao, and He, Yuan-Chun
- Subjects
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CHEMORECEPTORS , *NORFLOXACIN , *TRYPTOPHAN , *FLUORESCENCE , *COORDINATION polymers , *REDSHIFT , *AQUEOUS solutions - Abstract
• Two new 3D Zn(II)/Co(II) CPs of sebacic acid and bbimb ligands are discribed. • CPs 1 and 2 display as 5-fold interpenetrating dia topology. • Both CPs exhibit selective sensing toward tryptophan and norfloxacin via turn-on and red shift effects. Two three-dimensional (3D) coordination polymers (CPs), namely {[M(seb)(bbimb)]·3H 2 O} n (M = Zn for 1 ; Co for 2), were obtained via hydrothermal method using sebacic acid (H 2 seb) mixed with 1,4-bis(benzoimidazol-1-yl)butane (bbimb). The structures of 1 and 2 both display as 3D frameworks with a 5-fold interpenetrating dia topology. CPs 1 and 2 both exhibit excellent luminescent properties and good water stability. Fluorescence sensing experiments demonstrate that 1 and 2 both can selectively detect tryptophan (Trp) and norfloxacin (Nor) in aqueous solution through turn-on and red-shift effect with remarkable anti-interference ability and low detection limits. The limits of detection (LOD) toward Trp-and Nor are 0.07 μ M, 0.08 μ M for 1 and 0.41 μ M, 0.11 μ M for 2. In addition, theoretical calculations and different detection methods were utilized to thoroughly investigate the potential sensing mechanisms for Trp-and Nor. Importantly, 1 and 2 represent two rare examples for sensing both Trp-and Nor via turn-on and red-shift effects. The fluoresence test films of 1 and 2 were prepared which can detect Trp-and Nor quickly with naked eye. [Display omitted] Two new 3D Zn(II)/Co(II) CPs of sebacic acid and bbimb ligands are discribed. CPs 1 and 2 display as 5-fold interpenetrating dia topology. Both CPs were confirmed to be luminescent sensors for detection of tryptophan (Trp) and norfloxacin (Nor) in aqueous solution through turn-on and red shift effects. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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