Cucurbit[8]uril-Mediated Polypseudorotaxane for Enhanced Lanthanide Luminescence Behavior in Water
| Autor: | Yu Liu, Yong Chen, Weilei Zhou, Hao-Yang Zhang, Xianyin Dai |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Lanthanide
Aqueous solution 010405 organic chemistry Chemistry Organic Chemistry Supramolecular chemistry Quantum yield 010402 general chemistry Photochemistry 01 natural sciences Biochemistry 0104 chemical sciences Ion Specific fluorescence Physical and Theoretical Chemistry Luminescence Solid film |
| Zdroj: | Organic Letters. 21:9363-9367 |
| ISSN: | 1523-7052 1523-7060 |
| Popis: | A novel supramolecular polypseudorotaxane was successfully constructed with pseudo[3]rotaxanes between pyridine-2,6-dicarboxylic acid imidazolium (G1) and cucurbit[8]uril (CB[8]) and the subsequent coordination with lanthanide ions. Significantly, compared with the pyridine-2,6-dicarboxylic acid imidazolium complex G1@Tb3+, CB[8]-mediated polypseudorotaxane CB[8]@G12@Tb3+ not only displayed enhanced lanthanide luminescence behavior with a 29.1-fold time enhancement (from 45.76 μs to 1.33 ms) of the excited-state lifetime (τ) and a 8.7-fold increase (from 0.89% to 7.81%) in the quantum yield (Φ) but also exhibited a specific fluorescence response to antibiotics in an aqueous solution and a solid film. |
| Databáze: | OpenAIRE |
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