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- Title
A π‐Conjugated, Covalent Phosphinine Framework.
- Authors
Huang, Jieyang; Tarábek, Ján; Kulkarni, Ranjit; Wang, Cui; Dračínský, Martin; Smales, Glen J.; Tian, Yu; Ren, Shijie; Pauw, Brian R.; Resch‐Genger, Ute; Bojdys, Michael J.
- Abstract
Structural modularity of polymer frameworks is a key advantage of covalent organic polymers, however, only C, N, O, Si, and S have found their way into their building blocks so far. Here, the toolbox available to polymer and materials chemists is expanded by one additional nonmetal, phosphorus. Starting with a building block that contains a λ5‐phosphinine (C5P) moiety, a number of polymerization protocols are evaluated, finally obtaining a π‐conjugated, covalent phosphinine‐based framework (CPF‐1) through Suzuki–Miyaura coupling. CPF‐1 is a weakly porous polymer glass (72.4 m2 g−1 BET at 77 K) with green fluorescence (λmax=546 nm) and extremely high thermal stability. The polymer catalyzes hydrogen evolution from water under UV and visible light irradiation without the need for additional co‐catalyst at a rate of 33.3 μmol h−1 g−1. These results demonstrate for the first time the incorporation of the phosphinine motif into a complex polymer framework. Phosphinine‐based frameworks show promising electronic and optical properties, which might spark future interest in their applications in light‐emitting devices and heterogeneous catalysis.
- Subjects
POROUS polymers; PHOSPHORINE; HETEROGENEOUS catalysis; VISIBLE spectra; OPTICAL properties
- Publication
Chemistry - A European Journal, 2019, Vol 25, Issue 53, p12342
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201900281