Journal
RSC ADVANCES
Volume 7, Issue 40, Pages 24822-24827Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra01731f
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Funding
- National Natural Science Foundation of China [21405043, 21675051, 21375037, 21205038]
- Hunan Natural Science Foundation [13JJ2022]
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We have synthesized a novel long-wavelength fluorescent probe MFC for detection of palladium (Pd-0). This probe not only shows high selectivity for palladium, but also could quickly discriminate different palladium species (Pd-0, Pd2+, Pd4+) in phosphate buffered solution. After the reaction with Pd(PPh3)(4), the UV absorption of the probe MFC shifts from 334 nm to 594 nm within a few minutes. The probe MFC conjugated with alkyl carbamate, which destroys the principle of intramolecular charge transfer (ICT) and shows weak fluorescence. Based on the Pd-0-catalyzed Tsuji-Trost deallylation reaction, the fluorogen was released and the fluorescence intensity at 612 nm was observed with 13-fold enhancement along with an obvious color change from yellow to purple with low detection limit.
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