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The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
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Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
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Electrochemically active porous organic polymers based on corannulene.

Arosha A K Karunathilake1, Christina M Thompson1, Sahila Perananthan1

  • 1Department of Chemistry and Biochemistry, The University of Texas, Dallas, 800 W. Campbell Rd. Richardson, Texas, 75080, USA. ronald.smaldone@utdallas.edu.

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Researchers synthesized novel porous organic polymers (POPs) using corannulene, achieving high surface area and CO2 adsorption. These materials retain the unique redox properties of corannulene.

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Supramolecular Chemistry

Background:

  • Corannulene is the smallest buckybowl molecule, known for its unique structure and redox properties.
  • Porous organic polymers (POPs) are a class of materials with high surface areas and tunable properties.
  • Developing new POPs with enhanced functionalities is crucial for applications in gas adsorption and catalysis.

Purpose of the Study:

  • To synthesize novel porous organic polymers (POPs) utilizing corannulene as a building block for the first time.
  • To investigate the structural, surface, and adsorption properties of these newly developed corannulene-based POPs (BB-POPs).
  • To evaluate the potential of BB-POPs for carbon dioxide (CO2) capture and storage.

Main Methods:

  • Sonogashira co-polymerization reaction.
  • Synthesis of three different BB-POPs using 1,2,5,6-tetrabromocorannulene and various alkyne linkers.
  • Characterization of surface area using Brunauer-Emmett-Teller (BET) analysis.
  • Measurement of CO2 adsorption capacity.

Main Results:

  • Successful synthesis of three novel BB-POPs.
  • BB-POP-3 demonstrated the highest BET surface area, reaching 560 m² g⁻¹.
  • BB-POP-3 exhibited a significant CO2 adsorption capacity of 11.7 wt%.
  • The synthesized BB-POPs retained the characteristic redox properties of the parent corannulene molecule.

Conclusions:

  • The study presents the first successful synthesis of corannulene-based porous organic polymers (BB-POPs).
  • The developed BB-POPs possess high surface areas and notable CO2 adsorption capabilities.
  • These materials offer a promising platform for CO2 capture applications while preserving the inherent redox activity of corannulene.