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
Summary
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.
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.
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