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Synthesis of an Imprinted Receptor Targeted for Sulfonated Aromatic Pollutants by a Stoichiometric Substructure
Rupali Thorave1, Maurizio Celentano2, Komal Bankar1
1School of Consciousness, Dr. Vishwanath Karad MIT World Peace University, 411038 Kothrud, Pune, India.
Polymer Science & Technology (Washington, D.C.)
|June 8, 2026
Summary
This study developed novel molecularly imprinted polymers (MIPs) for efficiently capturing sulfonated pollutants like dyes and surfactants from water. These advanced receptors show high capacity and rapid binding in aqueous environments.
Area of Science:
- Materials Science
- Polymer Chemistry
- Environmental Chemistry
Background:
- Recognizing and removing sulfonated anions, surfactants, and pollutants from water presents significant challenges.
- Developing effective artificial receptors for these tasks is crucial for environmental remediation.
Purpose of the Study:
- To synthesize molecularly imprinted polymers (MIPs) using a stoichiometric sub-structure imprinting approach for sulfonated anion recognition.
- To create water-compatible and high-capacity imprinted receptors for extracting sulfonated pollutants.
Main Methods:
- Synthesized MIPs via polymerization of a phenylsulfonic acid (PSA) and bisimidazolium monomer complex.
- Evaluated complexation and stoichiometry using UV-Vis and 1H NMR titrations, supported by modeling.
- Incorporated hydroxyl-containing co-monomers to enhance water compatibility and binding capacity.
Main Results:
- Demonstrated successful rebinding of molecules with PSA substructure, including benzyl orange, methyl orange, and linear alkylbenzene sulfonates (LAS).
- Achieved a binding capacity of ~60 μmol g⁻¹ for benzyl orange dye in aqueous solutions (≥50% water) with an imprinting factor of two.
- Showcased rapid binding of sulfonated dyes within 10 minutes and captured LAS from commercial sodium dodecyl sulfate.
Conclusions:
- Developed a novel MIP-based receptor system effective for capturing sulfonated pollutants in aqueous environments.
- The stoichiometric sub-structure imprinting approach offers a promising strategy for designing selective artificial receptors.
- The MIPs demonstrate potential for practical applications in water treatment and pollutant removal.
