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Study on Dicyandiamide-Imprinted Polymers with Computer-Aided Design.

Dadong Liang1, Yan Wang2, Songyang Li3

  • 1College of Resources and Environment, Jilin Agricultural University, Changchun 130118, China. liangdadong@aliyun.com.

International Journal of Molecular Sciences
|October 30, 2016
PubMed
Summary
This summary is machine-generated.

Molecularly imprinted polymers (MIPs) were designed for dicyandiamide (DCD) recognition using theoretical calculations. Methacrylic acid (MAA) and pentaerythritol triacrylate (PETA) were identified as optimal functional monomer and cross-linker, respectively, achieving high DCD adsorption.

Keywords:
computer simulationdicyandiamidemolecular imprintingmolecularly imprinted polymer

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Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Computational Chemistry

Background:

  • Molecularly imprinted polymers (MIPs) are synthetic receptors with tailored binding sites.
  • Developing selective MIPs for specific analytes like dicyandiamide (DCD) is crucial for various applications.
  • Understanding molecular interactions is key to designing efficient MIPs.

Purpose of the Study:

  • To design and prepare molecularly imprinted polymers (MIPs) for selective dicyandiamide (DCD) recognition.
  • To computationally investigate the interactions between DCD and potential functional monomers and cross-linkers.
  • To optimize MIP composition for enhanced DCD adsorption capacity.

Main Methods:

  • Theoretical calculations using M062X/6-31G(d,p) to simulate interactions.
  • Precipitation polymerization in acetonitrile at 333 K.
  • Screening of functional monomers (acrylamide, N,N'-methylenebisacrylamide, itaconic acid, methacrylic acid) and cross-linkers (divinylbenzene, ethylene glycol dimethacrylate, trimethylolpropane trimethylacrylate, pentaerythritol triacrylate).

Main Results:

  • Methacrylic acid (MAA) was identified as the optimal functional monomer due to strong interactions with DCD.
  • Pentaerythritol triacrylate (PETA) was selected as the best cross-linker, balancing interactions with DCD and MAA.
  • The optimized MIPs exhibited a maximum DCD adsorption capacity of 17.45 mg/g.

Conclusions:

  • Theoretical calculations effectively guided the design of MIPs for DCD recognition.
  • The combination of MAA and PETA yielded MIPs with superior adsorption performance.
  • This study provides a rational approach for designing MIPs with high selectivity and capacity.