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A π-Conjugated, Covalent Phosphinine Framework.

Jieyang Huang1,2, Ján Tarábek2, Ranjit Kulkarni1,2

  • 1Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|July 20, 2019
PubMed
Summary
This summary is machine-generated.

Phosphorus is now incorporated into covalent organic polymers, creating phosphinine-based frameworks (CPFs). These novel materials exhibit fluorescence and catalyze hydrogen production, expanding possibilities for materials science and catalysis.

Keywords:
Suzuki-Miyaura couplingfluorescencephosphininepolymersπ-conjugated frameworks

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Organic Chemistry

Background:

  • Covalent organic polymers offer structural modularity.
  • Current building blocks are limited to C, N, O, Si, and S.

Purpose of the Study:

  • To expand the elemental building blocks for covalent organic polymers.
  • To synthesize and characterize novel phosphorus-containing polymer frameworks.

Main Methods:

  • Utilized a λ⁵-phosphinine building block.
  • Employed Suzuki-Miyaura coupling for polymerization.
  • Characterized the resulting polymer framework (CPF-1).

Main Results:

  • Successfully synthesized a π-conjugated, covalent phosphinine-based framework (CPF-1).
  • CPF-1 exhibits weak porosity (72.4 m²/g), green fluorescence, and high thermal stability.
  • CPF-1 catalyzes hydrogen evolution from water with a rate of 33.3 μmol/h/g under UV/visible light without co-catalysts.

Conclusions:

  • Demonstrated the first incorporation of the phosphinine motif into a polymer framework.
  • Phosphinine-based frameworks show potential for light-emitting devices and heterogeneous catalysis.