Abstract
A pseudorotaxane and its polypseudorotaxanes formed between pillar[5]arene moieties and n-octylpyrazinium cations as novel fluorescent sensors for the selective detection of halogen ions were reported. A collapse of these pillar[5]arene-based pseudorotaxanes and polypseudorotaxanes occurred upon the addition of Cl-, Br-, and I- (tetrabutylammonium salts), respectively, leading to their fluorescence recovery. The fluorescence enhancement of the pseudorotaxane and the polypseudorotaxanes increases in the order of I- < Br- < Cl-, and the differences in fluorescence intensity could be easily distinguished by naked eyes under UV light illumination.
Original language | English |
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Pages (from-to) | 987-992 |
Number of pages | 6 |
Journal | Chinese Chemical Letters |
Volume | 24 |
Issue number | 11 |
DOIs | |
Publication status | Published - Nov 2013 |
Keywords
- Fluorescent sensor
- Halogen ions detection
- Pillar[5]arene
- Polypseudorotaxanes