1. Anthracene-based lanthanide coordination polymer for the sensitive detection of 2-thiazolidinethione-4-carboxylic acid and temperature.
- Author
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Ding, Ge, Wang, Ming, Tian, Meng, Li, Yufen, Yang, Tao, Zhou, Xinhui, Xiao, Hongping, and You, Yujian
- Subjects
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COORDINATION polymers , *ANTHRACENE derivatives , *RARE earth metals , *CHEMICAL detectors , *ANTHRACENE , *FLUORESCENCE quenching , *FLUORESCENT probes - Abstract
An anthracene-based rare earth coordination polymer (CP) [Tb 2 Cl 2 (adip)(NMP) 3 (H 2 O)] (1) was prepared by solvothermal assembling of Tb3+ and 5,5′-(anthracene-9,10-diyl)diisophthalic acid (H 4 adip, NMP = N -methylpyrrolidone) and possesses a 3D framework and ligand-based blue emission. 1 could be used as a fluorescent probe to detect 2-thiazolidinethione-4-carboxylic acid (TTCA) and temperature with excellent selectivity, sensitivity and anti-interference ability. Between 0 and 10 μM concentration range of TTCA, the fluorescence quenching constant (K sv) of 1 reaches 9.78 × 104 M−1 with the limit of detection of 92.6 nM. 1 could also be used as a temperature sensor within 0–60 °C. The maximum relative sensitivity (S r) was calculated as 5.74% °C−1 at 60 °C and the temperature resolution (δT) is 0.013–0.003 °C corresponding to the above ambient temperature range. The sensitivities of 1 have reached the best level of reported chemical sensors so far. In addition, the mechanisms of fluorescence quenching were studied. [Display omitted] • A complex 1 based on 5,5′-(anthracene-9,10-diyl)diisophthalic acid was obtained. • 1 shows good sensitivity to 2-thiazolidinethione-4-carboxylic acid (TTCA) and temperature. • The limit of detection (LOD) for TTCA is 92.6 nM. • The maximum relative sensitivity (S r) for temperature is calculated as 5.74% °C−1. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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