A π‐Conjugated, Covalent Phosphinine Framework

0508939 - ÚOCHB 2020 RIV DE eng J - Článek v odborném periodiku
Huang, Jieyang - Tarábek, Ján - Kulkarni, Ranjit - Wang, C. - Dračínský, Martin - Smales, G. J. - Tian, Y. - Ren, S. - Pauw, B. R. - Resch-Genger, U. - Bojdys, Michael J.
A π‐Conjugated, Covalent Phosphinine Framework.
Chemistry - A European Journal. Roč. 25, č. 53 (2019), s. 12342-12348. ISSN 0947-6539. E-ISSN 1521-3765
Institucionální podpora: RVO:61388963
Klíčová slova: fluorescence * phosphinine * polymers * Suzuki-Miyaura coupling * π-conjugated frameworks
Obor OECD: Polymer science
Impakt faktor: 4.857, rok: 2019
Způsob publikování: Open access
https://onlinelibrary.wiley.com/doi/full/10.1002/chem.201900281

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.
Trvalý link: http://hdl.handle.net/11104/0299757