Preparation of biimidazole-based porous organic polymers for ultrahigh iodine capture and formation of liquid complexes with iodide/polyiodide ions

Tong-mou, Geng; Zhang, Can; Liu, Min; Hu, Chen; Chen, Guofeng

doi:10.1039/c9ta11982e

Cited by 88 publications

(63 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 34,35 ] The C, H, and N contents in TPG, HCCPA, and HPG were mensurated by EA (ESI S2‐2), which are basically consistent with the theoretical calculations. [ 20,21 ]…”

Section: Resultsmentioning

confidence: 99%

“…With continued exposure, TPG, HPG, and HCCPA showed rapid uptake behavior within the initial 8 h and slow uptake behavior within 60 h. Equilibrium absorption capacities at 60 h are 5.29, 1.63 and 4.08 g g −1 for TPG, HPG and HCCPA, respectively. [ 21,44–47 ] The colors of TPG, HPG and HCCPA changed from black, brown and yellow to dark black, sustaining good iodine absorption (Figure 4b). [ 21,44,46 ] Interestingly, the solid crosslinked POP network of TPG and HCCPA transformed into liquid and semisolid after iodine adsorption, which is completely different from other POPs.…”

Section: Resultsmentioning

confidence: 99%

“…[ 21,44–47 ] The colors of TPG, HPG and HCCPA changed from black, brown and yellow to dark black, sustaining good iodine absorption (Figure 4b). [ 21,44,46 ] Interestingly, the solid crosslinked POP network of TPG and HCCPA transformed into liquid and semisolid after iodine adsorption, which is completely different from other POPs. [ 47 ] The theoretical capacities of TPG, HPG, and HCCPA were 0.054, 0.021, and 0.037 g g −1 , respectively, based on the solid iodine density (4.93 g cm −3 ) and their pore volumes (0.011, 0.0042, and 0.0075 cm 3 g −1 ).…”

Section: Resultsmentioning

confidence: 99%

“…However, few studies have been conducted on bifunctional POPs with radioactive iodine enrichment and nonradioactive iodine detection. [ 19–21 ]…”

Section: Introductionmentioning

confidence: 99%

“…The imidazolium‐based POPs prepared by our group have small specific surface areas and high iodine adsorption abilities; hence, the liquid POP‐polyiodide anion complexes were first obtained. [ 21 ]…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Flexible Oxygen‐Bridged Porous Organic Polymers for Adsorping and Fluorescence Sensing Iodine and the Formation of Liquid Complexes of POPs‐(Poly)Iodide Anions

Tong-mou

Liu

et al. 2021

Macro Materials & Eng

Self Cite

View full text Add to dashboard Cite

Three flexible oxygen‐bridged porous organic polymers (TPG, HCCPA, and HPG) have been synthesized by nucleophilic substitution polymerization reactions. The three POPs display efficient and reversible adsorption of radioactive I2 in vapor and solution. In iodine vapor at 350 K, the maximum iodine adsorption capacities of TPG, HCCPA, and HPG are 5.29, 4.08, and 1.63 g g−1, respectively. The strong affinities for I2 are mainly due to the charge transfer of the POPs to iodine. Interestingly, with the decrease of iodine adsorption, charge transfer complexes of TPG, HCCPA, and HPG exhibit liquid, semi‐solid, and solid states, respectively. Furthermore, the three POPs have been found to fluorescently detect molecular iodine. The S–V quenching constants of TPG, HCCPA, and HPG are 2.01 × 104, 1.14 × 104, and 1.44 × 103 L mol−1, respectively. Their sensitivities decrease with the decrease of iodine adsorption. Pleasingly, HCCPA can sense molecular iodine by fluorescence in aqueous solution. Most probably, this is the first example of POPs used for fluorescent sensing molecular iodine in aqueous solution. Both TPG and HCCPA act as efficient adsorbents and chemical sensors of iodine.

show abstract

“…[ 34,35 ] The C, H, and N contents in TPG, HCCPA, and HPG were mensurated by EA (ESI S2‐2), which are basically consistent with the theoretical calculations. [ 20,21 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…However, few studies have been conducted on bifunctional POPs with radioactive iodine enrichment and nonradioactive iodine detection. [ 19–21 ]…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Flexible Oxygen‐Bridged Porous Organic Polymers for Adsorping and Fluorescence Sensing Iodine and the Formation of Liquid Complexes of POPs‐(Poly)Iodide Anions

Tong-mou

Liu

et al. 2021

Macro Materials & Eng

Self Cite

View full text Add to dashboard Cite

show abstract

Ionic Functionalization of Multivariate Covalent Organic Frameworks to Achieve an Exceptionally High Iodine‐Capture Capacity

et al. 2021

View full text Add to dashboard Cite

Adsorption‐based iodine (I2) capture has great potential for the treatment of radioactive nuclear waste. In this study, we apply a “multivariate” synthetic strategy to construct ionic covalent organic frameworks (iCOFs) with a large surface area, high pore volume, and abundant binding sites for I2 capture. The optimized material iCOF‐AB‐50 exhibits a static I2 uptake capacity of 10.21 g g−1 at 75 °C and a dynamic uptake capacity of 2.79 g g−1 at ≈400 ppm I2 and 25 °C, far exceeding the performances of previously reported adsorbents under similar conditions. iCOF‐AB‐50 also exhibits fast adsorption kinetics, good moisture tolerance, and full reusability. The promoting effect of ionic groups on I2 adsorption has been elucidated by experimentally identifying the iodine species adsorbed at different sites and calculating their binding energies. This work demonstrates the essential role of balancing the textural properties and binding sites of the adsorbent in achieving a high I2 capture performance.

show abstract

Ionic Functionalization of Multivariate Covalent Organic Frameworks to Achieve an Exceptionally High Iodine‐Capture Capacity

et al. 2021

View full text Add to dashboard Cite

Adsorption-based iodine (I 2 )c apture has great potential for the treatment of radioactive nuclear waste.Inthis study,weapply a"multivariate" synthetic strategy to construct ionic covalent organic frameworks (iCOFs) with al arge surface area, high pore volume,a nd abundant binding sites for I 2 capture.T he optimizedm aterial iCOF-AB-50 exhibits astatic I 2 uptake capacity of 10.21 gg À1 at 75 8 8Cand adynamic uptake capacity of 2.79 gg À1 at % 400 ppm I 2 and 25 8 8C, far exceeding the performances of previously reported adsorbents under similar conditions.i COF-AB-50 also exhibits fast adsorption kinetics,g ood moisture tolerance,a nd full reusability.T he promoting effect of ionic groups on I 2 adsorption has been elucidated by experimentally identifying the iodine species adsorbed at different sites and calculating their binding energies.T his work demonstrates the essential role of balancing the textural properties and binding sites of the adsorbent in achieving ahigh I 2 capture performance.

show abstract

Preparation of biimidazole-based porous organic polymers for ultrahigh iodine capture and formation of liquid complexes with iodide/polyiodide ions

Abstract: In the recent years, considerable progress has been made in iodine uptake—a radioactive emission process accompanying nuclear fission with porous organic polymers (POPs).

Cited by 88 publications

References 55 publications

Flexible Oxygen‐Bridged Porous Organic Polymers for Adsorping and Fluorescence Sensing Iodine and the Formation of Liquid Complexes of POPs‐(Poly)Iodide Anions

Flexible Oxygen‐Bridged Porous Organic Polymers for Adsorping and Fluorescence Sensing Iodine and the Formation of Liquid Complexes of POPs‐(Poly)Iodide Anions

Ionic Functionalization of Multivariate Covalent Organic Frameworks to Achieve an Exceptionally High Iodine‐Capture Capacity

Ionic Functionalization of Multivariate Covalent Organic Frameworks to Achieve an Exceptionally High Iodine‐Capture Capacity

Contact Info

Product

Resources

About