Synthesis and Iodine Adsorption Properties of Organometallic Copolymers with Propeller-Shaped Fe(II) Clathrochelates Bridged by Different Diaryl Thioether and Their Oxidized Sulfone Derivatives

Abstract

Three organometallic copolymers, ICP1-3, containing iron(II) clathrochelate units with cyclohexyl lateral groups and interconnected by various thioether derivatives were synthesized. The reaction of the latter into their corresponding OICP1-3 sulfone derivatives was achieved quantitatively using mild oxidation reaction conditions. The target copolymers, ICP1-3 and OICP1-3, were characterized by various instrumental analysis techniques, and their iodine uptake studies disclosed excellent iodine properties, reaching a maximum of 360 wt.% (qe = 3600 mg g−1). The adsorption mechanisms of the copolymers were explored using pseudo-first-order and pseudo-second-order kinetic models. Furthermore, regeneration tests confirmed the efficiency of the target copolymers for their iodine adsorption even after several adsorption-desorption cycles.

High Uptake of the Carcinogenic Pararosaniline Hydrochloride Dye from Water Using Carbazole-Containing Conjugated Copolymers Synthesized from a One-Pot Cyclopentannulation Reaction

“…On the other hand, the absorption bands seen at 1592 and 762 cm −1 are assigned to the aromatic alkene (C�C) stretching and bending vibrations, respectively. 40,41 This corroborates the successful synthesis of conjugated copolymer CAP2. Likewise, copolymers CAP1,3 disclose similar typical peaks, which confirm their structures as well (Figures S15 and S17 in the Supporting Information file).…”

“…Furthermore, the FT-IR spectrum of CAP2 discloses all of the fingerprint peaks, namely, the N–H stretching vibration at 3310 cm –1 and aliphatic C–H and aromatic C–H bending vibrations at 2964 and 1436 cm –1 , respectively. On the other hand, the absorption bands seen at 1592 and 762 cm –1 are assigned to the aromatic alkene (CC) stretching and bending vibrations, respectively. , This corroborates the successful synthesis of conjugated copolymer CAP2 . Likewise, copolymers CAP1,3 disclose similar typical peaks, which confirm their structures as well (Figures S15 and S17 in the Supporting Information file).…”

57Fe Mössbauer and DFT study of the electronic and spatial structures of the iron(ii) (pseudo)clathrochelates: the effect of ligand field strength

“…Indeed, cage complexes of this type with the encapsulated metal ion(s) are known to be chemically robust coordination compounds possessing unusual chemical, optical and redox properties. 3 They have been earlier proposed as prospective “topological” prodrugs, 4 optical probes, 5 homo- and heterogeneous catalysts, 6 covalent and coordination polymers, 7 MOFs 8 and the single-ion molecular magnets 9 with record magnetic characteristics as well. Most of them are formed by the iron( ii )-centered clathrochelate ligands and monomers.…”

Tröger’s Base-Enriched Conjugated Cyclopentannulated Copolymers: Prominent Adsorbents of CO2, H2, and Iodine

“…The vessel was degassed and held at a constant temperature of 80 °C, and measurements were recorded to track the absorption of iodine by the copolymers at various time periods. The weight percentage of I 2 captured by the copolymer was computed using the following formula: normalI 2 nobreak0em.25em⁡ uptake = false( M 2 − M 1 false) M 1 × 100 nobreak0em.25em⁡ wt % goodbreak0em1em⁣ ( 100 ⁡ wt % = 1000 ⁡ mg ⁡ g − 1 ) with M 1 and M 2 representing the initial and final masses of the copolymer, i.e., preceding and following I 2 uptake, respectively …”