Chalcogen Bond‐Assisted Iodine Adsorption from Water by Hydrophobic Receptor Se4Me‐PF6
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2025
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| author | Sourav Pramanik Abu S. M. Islam Iti Ghosh Sahidul Mondal Pradyut Ghosh |
| author_facet | Sourav Pramanik Abu S. M. Islam Iti Ghosh Sahidul Mondal Pradyut Ghosh Sourav Pramanik Abu S. M. Islam Iti Ghosh Sahidul Mondal Pradyut Ghosh |
| collection | Wiley Open Access |
| contents | Chalcogen Bond‐Assisted Iodine Adsorption from Water by Hydrophobic Receptor Se4Me‐PF6 Sourav Pramanik Abu S. M. Islam Iti Ghosh Sahidul Mondal Pradyut Ghosh ChemSusChem The removal of molecular iodine (I2/I3−) from aqueous environments is of great importance due to its biological relevance and environmental concerns, particularly in nuclear waste management. Herein, a hydrophobic tetrapodal receptor Se4Me‐PF6, which exhibits iodine adsorption from an aqueous phase via chalcogen bonding (ChB) interaction, is demonstrated. In the solution phase, NMR studies reveal that Se4Me‐PF6 selectively recognizes iodide (I−) over other anions. On the other hand, in the solid state, selenoimidazolium building units of Se4Me‐PF6 facilitate self‐assembly into a porous 1D supramolecular ChB framework, enabling efficient iodine adsorption. Consequently, Se4Me‐PF6 has propelled the rapid adsorption of iodine, with a high kinetic rate of 2.10 × 10−3 g mg−1 min−1, while maintaining its effectiveness under competitive environmental conditions, including pH variations and the presence of interfering anions. Mechanistic investigations using XPS and density functional theory studies indicate that iodine capture occurs via a combination of ChB interactions and electrostatic forces provided by the selenoimidazolium motifs. Importantly, Se4Me‐PF6 demonstrates its potential as a stationary phase for column‐based iodine removal, highlighting its applicability in real‐world scenarios. Thus, these findings offer a promising approach for developing iodine adsorbent materials. 10.1002/cssc.202500751 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| doi_str_mv | 10.1002/cssc.202500751 |
| format | Artículo Open Access |
| id | wiley_oa_10_1002_cssc_202500751 |
| institution | Wiley Open Access |
| license_str_mv | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| publishDate | 2025 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Chalcogen Bond‐Assisted Iodine Adsorption from Water by Hydrophobic Receptor Se4Me‐PF6 Sourav Pramanik Abu S. M. Islam Iti Ghosh Sahidul Mondal Pradyut Ghosh ChemSusChem Chalcogen Bond‐Assisted Iodine Adsorption from Water by Hydrophobic Receptor Se4Me‐PF6 Sourav Pramanik Abu S. M. Islam Iti Ghosh Sahidul Mondal Pradyut Ghosh ChemSusChem The removal of molecular iodine (I2/I3−) from aqueous environments is of great importance due to its biological relevance and environmental concerns, particularly in nuclear waste management. Herein, a hydrophobic tetrapodal receptor Se4Me‐PF6, which exhibits iodine adsorption from an aqueous phase via chalcogen bonding (ChB) interaction, is demonstrated. In the solution phase, NMR studies reveal that Se4Me‐PF6 selectively recognizes iodide (I−) over other anions. On the other hand, in the solid state, selenoimidazolium building units of Se4Me‐PF6 facilitate self‐assembly into a porous 1D supramolecular ChB framework, enabling efficient iodine adsorption. Consequently, Se4Me‐PF6 has propelled the rapid adsorption of iodine, with a high kinetic rate of 2.10 × 10−3 g mg−1 min−1, while maintaining its effectiveness under competitive environmental conditions, including pH variations and the presence of interfering anions. Mechanistic investigations using XPS and density functional theory studies indicate that iodine capture occurs via a combination of ChB interactions and electrostatic forces provided by the selenoimidazolium motifs. Importantly, Se4Me‐PF6 demonstrates its potential as a stationary phase for column‐based iodine removal, highlighting its applicability in real‐world scenarios. Thus, these findings offer a promising approach for developing iodine adsorbent materials. 10.1002/cssc.202500751 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| title | Chalcogen Bond‐Assisted Iodine Adsorption from Water by Hydrophobic Receptor Se4Me‐PF6 |
| topic | ChemSusChem |
| url | https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cssc.202500751 |