Lead(II) complexes of 1-alkyl-2-(arylazo)imidazole: Synthesis, structure, photochromism and metallomesogenic properties

The crystal structure of tetrakis(6-phenylpyridine-2-carboxylate-κ 2 N,O)-bis(μ2-6-phenylpyridine-2-carboxylate-κ 2 O:O′)-bis(μ2-6-phenylpyridine-2-carboxylate-κ 3N,O:O)tetralead(II) C48H32N4O8Pb2

C48H32N4O8Pb2, triclinic, P 1 ‾ $P\overline{1}$ (no. 2), a = 9.2712(8) Å, b = 14.5959(13) Å, c = 16.6178(13) Å, α = 76.089(7)°, β = 77.068(7)°, γ = 74.717(7)°, V = 2074.5(3) Å3, Z = 2, R gt (F) = 0.0563, wR ref (F 2) = 0.1783, T = 250 K.

A novel 3-D lead-iodide polymer based on the linkage of rare binuclear [Pb2I]3+ cations and anionic bis(pyrazinyl)-trizole bridges

A novel 3-D lead-iodide polymer [Pb₂I(μ-bpt-z)₃]_n (1, Hbpt-z = 3,5-bis(pyrazinyl)-1,2,4-trizole) has been hydrothermally prepared and structurally characterized. 1 offers the first example of a 3-D lead-iodide polymer built up from the linkage of rare binuclear [Pb₂I]³⁺ cations and anionic bis(pyrazinyl)-trizole bridges. 1 exhibits photoluminescent and photocurrent response properties, and its density functional theory calculation was also studied.

Effect of counter cations on the photochromic behaviors of three Zn–viologen complexes

Similar viologen cations, regular change in acceptor moieties and photochromism provide an ideal model for elucidating D–A matching rules.

Synthesis and Voltammetric Determination of Pb(II) Using a ZIF-8-Based Electrode

Zeolite imidazole framework-8 (ZIF-8) was prepared by the hydrothermal process. The obtained ZIF-8 was a characteristic of X-ray-diffraction (XRD), transmission electron microscope (TEM), thermal gravity-differential thermal analysis (TG-DTA), and dynamic light scattering (DLS). The obtained ZIF-8 possessed large specific area and was highly dispersed. Its morphology consisted of nanospherical particles with 30–50 nm in diameter. Chemical stability of ZIF-8 in different conditions was studied. The ZIF-8 was used as an electrode modifier for the determination of trace levels of lead. The parameters including solvents and solution pH were investigated. The repeatability, reproducibility, accuracy, linear range, limit of detection, and limit of quantitation were also addressed. The results showed that ZIF-8 is a potential electrode modifier for differential pulse anodic stripping method to determine Pb(II) in aqueous solution.