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Hsieh YY, Shyue JJ, Chao YC, Wong KT, Bassani DM. Chiral Binaphthalene Building Blocks for Self-Assembled Nanoscale CPL Emitters. Molecules 2023; 28:molecules28083382. [PMID: 37110615 PMCID: PMC10142354 DOI: 10.3390/molecules28083382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/03/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
The introduction of biuret hydrogen-bonding sites onto chiral binaphthalene-based chromophores was investigated as a route to sub-micron-sized, vesicle-like aggregates endowed with chiroptical properties. The synthesis was conducted from the corresponding chiral 4,4'-dibromo-1,1'-bis(2-naphthol) via Suzuki-Miyaura coupling to afford luminescent chromophores whose emission spectrum could be tuned from blue to yellow-green through extension of the conjugation. For all compounds, the spontaneous formation of hollow spheres with a diameter of ca. 200-800 nm was evidenced by scanning electron microscopy, along with strong asymmetry in the circularly polarized absorption spectra. For some compounds, the emission also displayed circular polarization with values of glum = ca. 10-3 which could be increased upon aggregation.
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Affiliation(s)
- Yu-Yu Hsieh
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, F-33400 Talence, France
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Jing-Jong Shyue
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Yu-Chiang Chao
- Department of Physics, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Ken-Tsung Wong
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
- Institute of Atomic and Molecular Science, Academia Sinica, Taipei 10617, Taiwan
| | - Dario M Bassani
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, F-33400 Talence, France
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Hsieh YY, Sánchez RS, Raffy G, Shyue JJ, Hirsch L, Del Guerzo A, Wong KT, Bassani DM. Supramolecular gating of TADF process in self-assembled nano-spheres for high-resolution OLED applications. Chem Commun (Camb) 2022; 58:1163-1166. [PMID: 34981085 DOI: 10.1039/d1cc06120h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Acridine-based donor-acceptor chromophores exhibiting E-type delayed fluorescence were substituted with bis-biuret H-bonding motifs to induce the formation of hollow spheres which can be deposited from solution to form the active component of OLED devices. In solution, the contribution of the delayed component is sensitive to disruption of the aggregates.
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Affiliation(s)
- Yu-Yu Hsieh
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France. .,Department of Chemistry, National Taiwan University, and Institute of Atomic and Molecular Science, Academia Sinica, Taipei 10617, Taiwan.
| | - Rafael S Sánchez
- Univ. Bordeaux, CNRS, Bordeaux INP, ENSCBP, IMS, CNRS UMR 5218, F-33400 Talence, France
| | - Guillaume Raffy
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France.
| | - Jing-Jong Shyue
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Lionel Hirsch
- Univ. Bordeaux, CNRS, Bordeaux INP, ENSCBP, IMS, CNRS UMR 5218, F-33400 Talence, France
| | - André Del Guerzo
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France.
| | - Ken-Tsung Wong
- Department of Chemistry, National Taiwan University, and Institute of Atomic and Molecular Science, Academia Sinica, Taipei 10617, Taiwan.
| | - Dario M Bassani
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France.
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