Construction of 14-metal lanthanide nanorings with NIR luminescence response to ions

A high-nuclearity Cd(ii)–Nd(iii) nanocage for the rapid ratiometric fluorescent detection of quercetin

A 32-metal Cd(ii)–Nd(iii) nanocage was constructed, and it shows rapid and stable ratiometric fluorescent response to quercetin.

Construction of a Luminescent Eleven-metal Zn(II)-Tb(III) Nanocluster for Rapid and Quantitative Time-gated Detection of Guanosine-5-monophoshpate and RNA

One 11-metal Zn(II)-Tb(III) nanocluster 1 was synthesized using a tetradentate Schiff base ligand. The addition of GMP and RNA results in the enhancement of Tb(III) luminescence of 1, which is...

Construction of a 18-Metal Neodymium(III) Nanoring with NIR Luminescent Sensing to Antibiotics

One 18-metal Nd(III) nanoring, [Nd₁₈(L¹)₈(HL²)₂(OAc)₂₀(MeOH)₈(EtOH)₆(H₂O)₄]·2(MeOH)·6(H₂O) (1), was constructed by the use of a hexadentate Schiff base ligand. For 1, the near-infrared (NIR) luminescence of Nd(III) was detected under the excitation of absorption band at 371 nm. The study of luminescent sensing properties exhibits that, even with the existence of other antibiotics, this Nd(III) nanoring displays high sensitivity and selectivity to nitrofuran antibiotics (NFAs). The luminescence quenching constants and limits of detection of 1 to NFAs are found to be 1.4 × 10⁴ to 3.5 × 10⁴ M^-1 and 0.9-2.2 μM, respectively.

Construction of a High-Nuclearity Elliptical Yb(III) Nanoring: NIR Luminescent Response to Metal Ions and Nitro Explosives

One 14-metal Yb(III) nanoring [Yb₁₄(HL)₂L₂₀(DMF)₈(H₂O)₈] (1) with a size of about 1.1 × 2.5 × 2.7 nm was synthesized from a tridentate ligand. Under the excitation of ligand absorption bands, 1 exhibits the NIR luminescence of Yb(III) and displays high luminescence sensitivity and selectivity to Co(II), Cu(II), and 2,4,6-trinitrophenol (PA) at the parts per million level. The K_SV values of 1 to Co(II), Cu(II), and PA are 6.0 × 10⁴ M^-1, 3.8 × 10⁴ M^-1, and 6.9 × 10⁴ M^-1, respectively. 1 exhibits high luminescent sensitivity to PA even in the presence of other explosives.