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Full J, Wildervanck MJ, Dillmann C, Panchal SP, Volland D, Full F, Meerholz K, Nowak-Król A. Impact of Truncation on Optoelectronic Properties of Azaborole Helicenes. Chemistry 2023:e202302808. [PMID: 37651165 DOI: 10.1002/chem.202302808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 08/31/2023] [Accepted: 08/31/2023] [Indexed: 09/01/2023]
Abstract
Herein, we report configurationally stable singly-truncated (ST) and structurally flexible doubly-truncated (DT) helically chiral compounds derived from azabora[7]helicenes by a hypothetical removal of a single or two C=C double bonds. The singly-truncated constitutional isomers were synthesized from either benzoisoquinoline (BIQ) or phenantherene building blocks and the corresponding biaryls in excellent yields to give azabora[5]helicenes with a pendant phenyl ring at a sterically hindered position. These systems highlight the electronic impact of the nitrogen donor substitution position. The compounds with a disrupted BIQ moiety (STN) possess remarkable photoluminescence quantum yields of up to 0.53 in the solid state and a blue emission in solution with dissymmetry factors of up to ca. 3×10-3 . Upon cooling to 79 K all compounds exhibit phosphorescence with lifetimes of up to ca. 0.5 s. A methyl complex of azabora[7]helicene showing excellent configurational stability was used as a chiral inducer embedded in an emissive polymer (F8BT) to produce circularly polarized organic light emitting diodes with an electroluminescence dissymmetry factor gEL of up to 0.54.
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Affiliation(s)
- Julian Full
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
- Institut für Organische Chemie and Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Martijn J Wildervanck
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
- Institut für Organische Chemie and Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Claudia Dillmann
- Department of Chemistry, University of Cologne, Greinstr. 4-6, 50939, Köln, Germany
| | - Santosh P Panchal
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
- Institut für Organische Chemie and Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Daniel Volland
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
- Institut für Organische Chemie and Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Felix Full
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
- Institut für Organische Chemie and Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Klaus Meerholz
- Department of Chemistry, University of Cologne, Greinstr. 4-6, 50939, Köln, Germany
| | - Agnieszka Nowak-Król
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
- Institut für Organische Chemie and Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
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Zinna F, Albano G, Taddeucci A, Colli T, Aronica LA, Pescitelli G, Di Bari L. Emergent Nonreciprocal Circularly Polarized Emission from an Organic Thin Film. Adv Mater 2020; 32:e2002575. [PMID: 32734682 DOI: 10.1002/adma.202002575] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/30/2020] [Indexed: 06/11/2023]
Abstract
Controlling circularly polarized (CP) emission is key for both fundamental understanding and applications in the field of chiral photonics and electronics. Here, a completely new way to achieve this goal is presented. A luminescent thin film, made from a chiral conjugated phenylene bis-thiophenylpropynone able to self-assemble into ordered structures, emits highly circularly polarized light with opposite handedness from its two opposite faces. Such emergent nonreciprocal behavior in CP emission, so far unprecedented, represents a fundamental advance, opening new opportunities in design, preparation, and applications of CP emitting materials.
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Affiliation(s)
- Francesco Zinna
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
- CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Lungarno Pacinotti 43, Pisa, 56126, Italy
| | - Gianluigi Albano
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
| | - Andrea Taddeucci
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
| | - Tony Colli
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
| | - Laura Antonella Aronica
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
- CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Lungarno Pacinotti 43, Pisa, 56126, Italy
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
- CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Lungarno Pacinotti 43, Pisa, 56126, Italy
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
- CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Lungarno Pacinotti 43, Pisa, 56126, Italy
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