Abstract
The field of supramolecular polymers is rapidly expanding; however, the exploitation of these systems as functional materials is still elusive. To become competitive, supramolecular polymers must display microstructural order and the emergence of new properties upon copolymerization. To tackle this, a greater understanding of the relationship between monomers’ design and polymer microstructure is required as well as a set of functional monomers that efficiently interact with one another to synergistically generate new properties upon copolymerization. Here, we present the first implementation of frustrated Lewis pairs into supramolecular copolymers. Two supramolecular copolymers based on π-conjugated O-bridged triphenylborane and two different triphenylamines display the formation of B−N pairs within the supramolecular chain. The remarkably long lifetime and the circularly polarized nature of the resulting photoluminescence emission highlight the possibility to obtain an intermolecular B−N charge transfer. These results are proposed to be the consequences of the enchainment of B−N frustrated Lewis pairs within 1D supramolecular aggregates. Although it is challenging to obtain a precise molecular picture of the copolymer microstructure, the formation of random blocklike copolymers could be deduced from a combination of optical spectroscopic techniques and theoretical simulation.
Original language | English |
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Pages (from-to) | 16681-16689 |
Number of pages | 9 |
Journal | Journal of the American Chemical Society |
Volume | 142 |
Issue number | 39 |
DOIs | |
Publication status | Published - 30 Sept 2020 |
Funding
The authors express their thanks to Prof. Dr. Shu Seki (Kyoto University), Dr. Nathan Van Zee, and Lafayette de Windt for fruitful discussions, Martin van Son for his support in film measurements, and Dr. Naoki Ando and Ms. Mika Sakai (Nagoya University) for their support in the synthesis of boron precursors. The work in The Netherlands received funding from The Netherlands Organization for Scientific Research (NWO-TOP PUNT Grant No. 10018944) and the Dutch Ministry of Education, Culture and Science (Gravitation Program 024.001.035). Beatrice Adelizzi received additional funding from the European Union’s Horizon 2020 research and innovation program (SmartSAST Grant No. 890479). The work in Japan received funding from JSPS KAKENHI grants (18H03909 and 18H05261).
Funders | Funder number |
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Nederlandse Organisatie voor Wetenschappelijk Onderzoek | 10018944 |
European Union's Horizon 2020 - Research and Innovation Framework Programme | 890479 |
Japan Society for the Promotion of Science | 18H03909, 18H05261 |
Ministerie van Onderwijs, Cultuur en Wetenschap | 024.001.035 |
Nederlandse Organisatie voor Wetenschappelijk Onderzoek | |
Nagoya University |