Design and synthesis of thiophene containing bis-chalcone-based mesoporous polymers for volatile iodine capture

Iodine and Nickel Ions Adsorption by Conjugated Copolymers Bearing Repeating Units of Dicyclopentapyrenyl and Various Thiophene Derivatives

“…The desired comonomers 3a-c were isolated in high yields (95-97%) from the reaction medium by silica gel column chromatography using petroleum ether/DCM (90:10 v/v) as the eluent. The structure and purity of 3a-c were confirmed by 1 H-and 13 C-NMR, EI-MS, and FTIR spectroscopy (Figures S1-S3, S9-S11, S15-S17 and S23-S25 in the Supplementary Materials).…”

“…Thin-layer chromatography (TLC) was carried out on aluminum sheets coated with silica gel 60 F254 and revealed using a UV lamp. 1 H-and 13 C-nuclear magnetic resonance (NMR) spectra were recorded utilizing a Bruker 400 MHz (Mannheim, Germany) NMR instrument by dissolving the respective compounds in CDCl 3 at 25 • C. Chemical shifts (in ppm) are reported using tetramethylsilane (δ = 0) as an internal standard in either CDCl 3 or CD 2 Cl 2 solvent. Thermogravimetric analysis (TGA) was recorded on a Shimadzu TGA-60H (Kyoto, Japan) analyzer and was employed to measure the thermal stability of the copolymers from room temperature up to 800 • C with a 10 • C/min heating rate under an inert atmosphere.…”

“…1 H-NMR (400 MHz, CD 2 Cl 2 , ppm): δ 7.44-7.43 (m, 4H, ArH), 7.40-7.38 (m, 4H, ArH), 7.20 (m, 1H, ArH), 7.17 (m, 1H, ArH), and 1.33 (s, 18H, -CH 3 ). 13 C-NMR (400 MHz, CD 2 Cl 2 , ppm): δ 152. 21, 141.69, 131.29, 128.57, 125.58, 125.03, 124.48, 119.51, 95.27, 82.23, 34.97, and 31.24.…”

“…1 H-NMR (400 MHz, CD 2 Cl 2 , ppm): δ 7.99-7.42 (m, 15H, ArH), 2.07 (br, 2H, -CH 2 ), and 1.31 (br, 29H, -CH 2 , -CH 3 ). 13 C-NMR (400 MHz, CD 2 Cl 2 , ppm): δ 146.00, 141.96, 141. 37, 138.09, 137.82, 134.77, 132.38, 130.81, 130.05, 129.47, 126.94, 125.46, 125.30, 125.16, 124.94, 123.62, 120.41, 31.49, 29.79, 22.41, and 16.12.…”

“…Nuclear power is considered an eminent energy source to produce electricity at a large scale in order to meet the great demand of an increasing global population and growing economy [12]. Nevertheless, the release of radioactive nuclear waste, like 90 Sr, 99 Tc, 137 Cs, 129 I, 127 Xe, 85 Kr, etc., is considered to be among the chief drawbacks of producing electricity from nuclear power [13][14][15]. Radioiodine, which occurs in the form of 131 I (t 1/2 = 8 days) and 129 I (t 1/2 = 15.7 million years), is the main gaseous pollutants causing severe health effects on humans and damaging the environment [16][17][18], where both wet scrubbing and physical adsorption are the most commonly employed techniques to filter off radioiodine vapors [19,20], with adsorption by porous materials being considered the most advantageous due to several factors, namely, their structural variety, cost-effectiveness, superior stability, and the possibility to engineer their porosity [21][22][23].…”