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Wang X, Wu P, Wang Y, Cui T, Jia M, He X, Wang W, Pan H, Sun Z, Yang HB, Chen J. Unraveling the Origin of Multichannel Circularly Polarized Luminescence in a Pyrene-Functionalized Topologically Chiral [2]Catenane. Angew Chem Int Ed Engl 2024; 63:e202407929. [PMID: 38837292 DOI: 10.1002/anie.202407929] [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: 04/26/2024] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 06/07/2024]
Abstract
Mechanically interlocked molecules (MIMs) are promising platforms for developing functionalized artificial molecular machines. The construction of chiral MIMs with appealing circularly polarized luminescence (CPL) properties has boosted their potential application in biomedicine and the optical industry. However, there is currently little knowledge about the CPL emission mechanism or the emission dynamics of these related MIMs. Herein, we demonstrate that time-resolved circularly polarized luminescence (TRCPL) spectroscopy combined with transient absorption (TA) spectroscopy offers a feasible approach to elucidate the origins of CPL emission in pyrene-functionalized topologically chiral [2]catenane as well as in a series of pyrene-functionalized chiral molecules. For the first time, direct evidence differentiating the chiroptical signals originating from either topological (local state emission) or Euclidean chirality (excimer state emission) in these pyrene-functionalized chiral molecules has been discovered. Our work not only establishes a novel and ideal approach to study CPL mechanism, but also provides a theoretical foundation for the rational design of novel chiral materials in the future.
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Affiliation(s)
- Xueli Wang
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200241, China
| | - Peicong Wu
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200241, China
| | - Yu Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes &, Shanghai Frontiers Science Center of Molecule Intelligent Syntheses & Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Tong Cui
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200241, China
| | - Menghui Jia
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200241, China
| | - Xiaoxiao He
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200241, China
| | - Wei Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes &, Shanghai Frontiers Science Center of Molecule Intelligent Syntheses & Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Haifeng Pan
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200241, China
| | - Zhenrong Sun
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200241, China
| | - Hai-Bo Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes &, Shanghai Frontiers Science Center of Molecule Intelligent Syntheses & Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
- Institute of Eco-Chongming, Shanghai, 202162, China
| | - Jinquan Chen
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200241, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, 030006, China
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Rodríguez-Rubio A, Savoini A, Modicom F, Butler P, Goldup SM. A Co-conformationally "Topologically" Chiral Catenane. J Am Chem Soc 2022; 144:11927-11932. [PMID: 35763555 PMCID: PMC9348828 DOI: 10.1021/jacs.2c02029] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Catenanes composed of two achiral rings that are oriented (Cnh symmetry) because of the sequence of atoms they contain are referred to as topologically chiral. Here, we present the synthesis of a highly enantioenriched catenane containing a related but overlooked "co-conformationally 'topologically' chiral" stereogenic unit, which arises when a bilaterally symmetric Cnv ring is desymmetrized by the position of an oriented macrocycle.
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Affiliation(s)
- Arnau Rodríguez-Rubio
- Chemistry, University
of Southampton, Highfield,
Southampton SO17 1BJ, United
Kingdom
| | - Andrea Savoini
- Chemistry, University
of Southampton, Highfield,
Southampton SO17 1BJ, United
Kingdom
| | - Florian Modicom
- Chemistry, University
of Southampton, Highfield,
Southampton SO17 1BJ, United
Kingdom
| | - Patrick Butler
- Chemistry, University
of Southampton, Highfield,
Southampton SO17 1BJ, United
Kingdom
| | - Stephen M. Goldup
- Chemistry, University
of Southampton, Highfield,
Southampton SO17 1BJ, United
Kingdom
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Affiliation(s)
- Arthur H. G. David
- Department of Chemistry Northwestern University Evanston Illinois 60208 United States
| | - J. Fraser Stoddart
- Department of Chemistry Northwestern University Evanston Illinois 60208 United States
- School of Chemistry University of New South Wales Sydney NSW 2052 Australia
- Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University Hangzhou 310021 China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 311215 China
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