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In this work, we have successfully provided a novel strategy for the rational design and synthesis of a ratiometric fluorescent probe for hypochlorite. The strategy is based on the deoximation reaction, which has not yet been used in the fluorescent hypochlorite probe design. Interestingly, the probe showed a ratiometric fluorescent response to hypochlorite… (More)
Phenanthroimidazole derivative 1 has been developed as a rare example of ratiometric fluorescent sensors for Fe(3+). Interestingly, upon treatment with Fe(3+), the sensor displayed a ratiometric fluorescent response with an enhancement of the ratios of emission intensities at 440 and 500 nm from 0.36 to 3.24. The detection range of the sensor for Fe(3+) is… (More)
Compound 1 was designed and synthesized as a new fluorescent thiol probe. Probe 1 was constructed on the basis of the conjugate 1,4-addition of thiols to alpha,beta-unsaturated ketones. Notably, probe 1 has suitable water solubility, which allows the sensing assay to be performed in water. Probe 1 is highly sensitive for thiols with a 211-fold fluorescence… (More)
We have rationally constructed a novel FRET-based ratiometric thiol probe suitable for ratiometric imaging in living cells based on the native chemical ligation reaction.
A highly sensitive fluorescent probe with a detection limit of 1.8 x 10(-9) M was constructed and employed to detect benzenethiols in environmental samples and living cells.
A simple and versatile ratiometric fluorescent Fe(3+) detecting system, probe 1, was rationally developed based on the Fe(3+)-mediated deprotection of acetal reaction. Notably, this reaction was firstly employed to design fluorescent Fe(3+) probe. Upon treatment with Fe(3+), probe 1 showed ratiometric response, with the fluorescence spectra displaying… (More)
4-(1H-phenanthro[9,10-d]imidazol-2-yl)benzaldehyde 1 was rationally designed as a novel ratiometric fluorescent probe for cysteine and homocysteine. Upon addition of cysteine or homocysteine, notably, the probe displayed a very large (125 nm) hypsochromic shift in emission due to switching off intramolecular charge transfer. This large emission wavelength… (More)
A fluorescence ratiometric sensor for OCl(-) has been developed based on a novel dual fluorophore response approach. The sensor molecule contains a coumarin fluorophore and a rhodamine fluorophore, and the two fluorophores are directly linked to an OCl(-) recognition group. The structure of the sensor was characterized by ESI-MS, NMR, and X-ray… (More)
Herein a ratiometric fluorescent Cu(2+) probe was rationally constructed in a straightforward manner with the concept of aldehyde group protection/deprotection. The probe showed a ratiometric fluorescent response to Cu(2+) with a large emission wavelength shift (>100 nm) and displayed high selectivity for Cu(2+) over other metal ions due to distinct… (More)
A new fluorescence turn-on probe for Hg(2+) imaging in living cells was judiciously designed based on the interactions of Hg(2+) to both thiol and alkyne moieties in a rhodamine scaffold, and the likely novel sensing mechanism has been proposed.