1
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Liu SY, Li S, Ukai S, Nozawa R, Fukui N, Sugimori R, Kishi R, Shinokubo H. Homochiral and Heterochiral Self-Sorting Assemblies of Antiaromatic Ni(II) Norcorrole Dimers. Chemistry 2024; 30:e202400292. [PMID: 38769938 DOI: 10.1002/chem.202400292] [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: 01/22/2024] [Revised: 05/19/2024] [Accepted: 05/21/2024] [Indexed: 05/22/2024]
Abstract
Recently, π-π stacked antiaromatic π-systems have received considerable attention because they can exhibit stacked-ring aromaticity due to substantial intermolecular orbital interactions. Here, we report three antiaromatic norcorrole dimers that self-assemble to form supramolecular architectures through chiral self-sorting. A 2,2'-linked norcorrole dimer with 3,5-di-tert-butylphenyl groups forms a π-stacked dimer both in solid and solution states via homochiral self-sorting. Its association constant in solution is (3.6±1.7)×105 M-1 at 20 °C. In the solid state, 3,3'-linked norcorrole dimers with 3,5-di-tert-butylphenyl and phenyl groups afford macrocyclic and helical supramolecular assemblies via heterochiral and homochiral self-sorting, respectively. Notably, the subtle modification in the substituent resulted in a complete change in the structure of the aggregates and the chiral self-sorting mode. The present findings demonstrate that structural manipulation in antiaromatic monomer units leads to the formation of various supramolecular assemblies on the basis of the attractive interactions between antiaromatic π-systems.
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Affiliation(s)
- Si-Yu Liu
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, and Integrated Research Consortium on Chemical Science (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, 464-8603, Nagoya, Japan
| | - Sha Li
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, and Integrated Research Consortium on Chemical Science (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, 464-8603, Nagoya, Japan
| | - Shusaku Ukai
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, and Integrated Research Consortium on Chemical Science (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, 464-8603, Nagoya, Japan
| | - Ryo Nozawa
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, and Integrated Research Consortium on Chemical Science (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, 464-8603, Nagoya, Japan
| | - Norihito Fukui
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, and Integrated Research Consortium on Chemical Science (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, 464-8603, Nagoya, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, 332-0012, Saitama, Japan
| | - Ryota Sugimori
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, 560-8531, Toyonaka, Osaka, Japan
| | - Ryohei Kishi
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, 560-8531, Toyonaka, Osaka, Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, and Integrated Research Consortium on Chemical Science (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, 464-8603, Nagoya, Japan
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2
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Menke JM, Trapp O. Pronounced Self-Induced Diastereomeric Anisochronism in Anisidine Amino Acid Diamides. Chemistry 2024; 30:e202400623. [PMID: 38656599 DOI: 10.1002/chem.202400623] [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: 02/15/2024] [Revised: 04/23/2024] [Accepted: 04/23/2024] [Indexed: 04/26/2024]
Abstract
The emergent properties resulting from selective supramolecular interactions are of significant importance for materials and chemical systems. For the directed use of such properties, a fundamental understanding of the interaction mechanism and the resulting mode of function is necessary for a tailored design. The self-induced diastereomeric anisochronism effect (SIDA), which occurs in the intermolecular interaction of chiral molecules, generates unique properties such as chiral self-recognition and nonlinear effects. Here we show that anisidine amino acid diamides lead to extraordinary signal splitting in NMR spectra through supramolecular interaction and homochiral self-recognition. By systematic experiments we have investigated the underlying SIDA effect, explored its limits and finally successfully utilized it in the determination of enantiomeric ratios by NMR spectroscopy of chiral 'SIDA-inactive' compounds such as thalidomide.
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Affiliation(s)
- Jan-Michael Menke
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
| | - Oliver Trapp
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
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3
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Xie H, Xiao Z, Song Y, Jin K, Liu H, Zhou E, Cao J, Chen J, Ding J, Yi C, Shen X, Zuo C, Ding L. Tethered Helical Ladder-Type Aromatic Lactams. J Am Chem Soc 2024; 146:11978-11990. [PMID: 38626322 DOI: 10.1021/jacs.4c01347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
Tethered nonplanar aromatics (TNAs) make up an important class of nonplanar aromatic compounds showing unique features. However, the knowledge on the synthesis, structures, and properties of TNAs remains insufficient. In this work, a new type of TNAs, the tethered aromatic lactams, is synthesized via Pd-catalyzed consecutive intramolecular direct arylations. These molecules possess a helical ladder-type conjugated system of up to 13 fused rings. The overall yields ranged from 3.4 to 4.3%. The largest of the tethered aromatic lactams, 6L-Bu-C14, demonstrates a guest-adaptive hosting capability of TNAs for the first time. When binding fullerene guests, the cavity of 6L-Bu-C14 became more circular to better accommodate spherical fullerene molecules. The host-guest interaction is thoroughly studied by X-ray crystallography, theoretical calculations, fluorescence titration, and nuclear magnetic resonance (NMR) titration experiments. 6L-Bu-C14 shows stronger binding with C70 than with C60 due to the better convex-concave π-π interaction. P and M enantiomers of all tethered aromatic lactams show distinct and persistent chiroptical properties and demonstrate the potential of chiral TNAs as circularly polarized luminescence (CPL) emitters.
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Affiliation(s)
- Huidong Xie
- Center for Excellence in Nanoscience, Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zuo Xiao
- Center for Excellence in Nanoscience, Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yixiao Song
- Center for Excellence in Nanoscience, Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ke Jin
- Center for Excellence in Nanoscience, Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongxing Liu
- Center for Excellence in Nanoscience, Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China
| | - Erjun Zhou
- Center for Excellence in Nanoscience, Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Cao
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Jiangzhao Chen
- Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Junqiao Ding
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Chenyi Yi
- Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Xingxing Shen
- College of Chemical Engineering, Hebei Normal University of Science and Technology, Qinhuangdao 066004, China
| | - Chuantian Zuo
- Center for Excellence in Nanoscience, Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liming Ding
- Center for Excellence in Nanoscience, Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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4
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Yeung A, Zwijnenburg MA, Orton GRF, Robertson JH, Barendt TA. Investigating the diastereoselective synthesis of a macrocycle under Curtin-Hammett control. Chem Sci 2024; 15:5516-5524. [PMID: 38638241 PMCID: PMC11023033 DOI: 10.1039/d3sc05715a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 03/04/2024] [Indexed: 04/20/2024] Open
Abstract
This work sheds new light on the stereoselective synthesis of chiral macrocycles containing twisted aromatic units, valuable π-conjugated materials for recognition, sensing, and optoelectronics. For the first time, we use the Curtin-Hammett principle to investigate a chiral macrocyclisation reaction, revealing the potential for supramolecular π-π interactions to direct the outcome of a dynamic kinetic resolution, favouring the opposite macrocyclic product to that expected under reversible, thermodynamically controlled conditions. Specifically, a dynamic, racemic perylene diimide dye (1 : 1 P : M) is strapped with an enantiopure (S)-1,1'-bi-2-naphthol group (P-BINOL) to form two diastereomeric macrocyclic products, the homochiral macrocycle (PP) and the heterochiral species (PM). We find there is notable selectivity for the PM macrocycle (dr = 4 : 1), which is rationalised by kinetic templation from intramolecular aromatic non-covalent interactions between the P-BINOL π-donor and the M-PDI π-acceptor during the macrocyclisation reaction.
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Affiliation(s)
- Angus Yeung
- School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Martijn A Zwijnenburg
- Department of Chemistry, University College London 20 Gordon Street London WC1H 0AJ UK
| | - Georgia R F Orton
- School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
| | | | - Timothy A Barendt
- School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
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5
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Penty S, Orton GRF, Black DJ, Pal R, Zwijnenburg MA, Barendt TA. A Chirally Locked Bis-perylene Diimide Macrocycle: Consequences for Chiral Self-Assembly and Circularly Polarized Luminescence. J Am Chem Soc 2024; 146:5470-5479. [PMID: 38355475 PMCID: PMC10910538 DOI: 10.1021/jacs.3c13191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 02/16/2024]
Abstract
Macrocycles containing chiral organic dyes are highly valuable for the development of supramolecular circularly polarized luminescent (CPL) materials, where a preorganized chiral framework is conducive to directing π-π self-assembly and delivering a strong and persistent CPL signal. Here, perylene diimides (PDIs) are an excellent choice for the organic dye component because, alongside their tunable photophysical and self-assembly properties, functionalization of the PDI's core yields a twisted, chiral π-system, capable of CPL. However, configurationally stable PDI-based macrocycles are rare, and those that are also capable of π-π self-assembly beyond dimers are unprecedented, both of which are advantageous for robust self-assembled chiroptical materials. In this work, we report the first bay-connected bis-PDI macrocycle that is configurationally stable (ΔG⧧ > 155 kJ mol-1). We use this chirally locked macrocycle to uncover new knowledge of chiral PDI self-assembly and to perform new quantitative CPL imaging of the resulting single-crystal materials. As such, we discover that the chirality of a 1,7-disubstituted PDI provides a rational route to designing H-, J- and concomitant H- and J-type self-assembled materials, important arrangements for optimizing (chir)optical and charge/energy transport properties. Indeed, we reveal that CPL is amplified in the single crystals of our chiral macrocycle by quantifying the degree of emitted light circular polarization from such materials for the first time using CPL-Laser Scanning Confocal Microscopy.
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Affiliation(s)
- Samuel
E. Penty
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
| | - Georgia R. F. Orton
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
| | - Dominic J. Black
- Department
of Chemistry, University of Durham, South Road, Durham DH1 3LE, U.K.
| | - Robert Pal
- Department
of Chemistry, University of Durham, South Road, Durham DH1 3LE, U.K.
| | - Martijn A. Zwijnenburg
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Timothy A. Barendt
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
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6
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Zhang HJ, Wei Y, Lin J. Frustrated π-stacking. Chem Commun (Camb) 2024; 60:935-942. [PMID: 38165791 DOI: 10.1039/d3cc04123a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
The properties of functional materials based on organic π-conjugated systems are governed extensively by intermolecular interactions between π-molecules. To establish clear relationships between supramolecular structures and functional properties, it is essential to attain structurally well-defined π-stacks, particularly in solution, as this enables the collection of valuable spectroscopic data. However, precise control and fine-tuning of π-stacks pose significant challenges due to the weak and bidirectional nature of π-π stacking interactions. This article introduces the concept of "frustrated π-stacking," strategically balancing attractive (π-π interaction) and repulsive (steric hindrance) forces in self-assembly to exert control over the sizes, sequences of π-stacks, and slip-stacked structures. These research efforts contribute to a deeper understanding of the correlation between π-stacks and their properties, thereby providing useful insights for the development of molecular materials with the desired performance.
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Affiliation(s)
- Hui-Jun Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Xiamen University, Xiamen 361005, P. R. China.
| | - Yifei Wei
- Department of Chemistry, College of Chemistry and Chemical Engineering, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Xiamen University, Xiamen 361005, P. R. China.
| | - Jianbin Lin
- Department of Chemistry, College of Chemistry and Chemical Engineering, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Xiamen University, Xiamen 361005, P. R. China.
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7
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Takimoto K, Shimada T, Nagura K, Hill JP, Nakanishi T, Yuge H, Ishihara S, Labuta J, Sato H. Thermo-/Mechano-Chromic Chiral Coordination Dimer: Formation of Switchable and Metastable Discrete Structure through Chiral Self-Sorting. J Am Chem Soc 2023; 145:25160-25169. [PMID: 37943955 DOI: 10.1021/jacs.3c05866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Although strong chiral self-sorting often emerges in extended covalent or supramolecular polymers, the phenomenon is generally weak in discrete assemblies (e.g., dimers and oligomers) of small molecules due to the lack of a cooperative growth mechanism. Consequently, chiral self-sorting has been overlooked in the design of switchable and metastable discrete supramolecular structures. Here, we report a butyl-benzo[h]quinoline-based iridium(III) complex (Bu-Ir) with helical chirality at its metal center, which forms preferentially a homochiral dimer and exhibits thermo-/mechano-chromism based on a monomer-dimer transformation. While a five-coordinate monomer is formed in a racemic or an enantiopure Bu-Ir solution at 25 °C, a six-coordinate homochiral dimer complex is formed almost exclusively at low temperatures, with a higher degree of dimerization in enantiopure Bu-Ir solution. Estimation of apparent dimerization binding constants (K) and thermodynamic parameters (ΔH and ΔS) based on variable temperature ultraviolet-visible (UV-vis) and 1H NMR spectra reveals a strong preference for homochiral dimerization (largest known value for the coordination complex, Khomo/Khetero > 50). Notably, crystals of the homochiral dimer are metastable, undergoing a distinct color change upon grinding (from yellow to red) due to mechanical cleavage of coordination bonds (i.e., a dimer to monomer transformation). A comparison with control compounds having different substituents (proton, methyl, isopropyl, and phenyl groups) reveals that Bu-Ir dimerization involves both strong homochiral self-sorting preference and connected thermo-/mechano-chromic behavior, which is based on matched propeller-shaped chirality and subtle steric repulsion between alkyl substituents that render the homochiral dimer switchable and metastable. These findings provide substantial insights into the emergence of dynamic functionality based on the rational design of discrete chiral assemblies.
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Affiliation(s)
- Kazuyoshi Takimoto
- Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
- Department of Chemistry, School of Science, Kitasato University, 1-15-1 Kitazato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
| | - Takumi Shimada
- Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Kazuhiko Nagura
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Jonathan P Hill
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takashi Nakanishi
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Hidetaka Yuge
- Department of Chemistry, School of Science, Kitasato University, 1-15-1 Kitazato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
| | - Shinsuke Ishihara
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Jan Labuta
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Hisako Sato
- Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
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8
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Aiello F, Uccello Barretta G, Balzano F, Spiaggia F. The Phenomenon of Self-Induced Diastereomeric Anisochrony and Its Implications in NMR Spectroscopy. Molecules 2023; 28:6854. [PMID: 37836697 PMCID: PMC10574224 DOI: 10.3390/molecules28196854] [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: 09/01/2023] [Revised: 09/21/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Nuclear magnetic resonance (NMR) spectroscopy is an analytical technique largely applied in the analysis of discrimination processes involving enantiomeric substrates and chiral agents, which can interact with the analyte either via covalent bonding or via formation of diastereomeric solvates. However, enantiodiscrimination has been observed, in some cases, even in the absence of any additional chiral selector. The reasons behind this phenomenon must be found in the capability of some chiral substrates to interact with themselves by forming diastereomeric solvates in solution that can generate nonequivalences in the NMR spectra of enantiomerically enriched mixtures. As a result, differentiation of enantiomers is observed, thus allowing the quantification of the enantiomeric composition of the mixture under investigation. The tendency of certain substrates to self-aggregate and to generate diastereomeric adducts in solution can be defined as Self-Induced Diastereomeric Anisochrony (SIDA), but other acronyms have been used to refer to this phenomenon. In the present work, an overview of SIDA processes investigated via NMR spectroscopy will be provided, with a particular emphasis on the nature of the substrates involved, on the interaction mechanisms at the basis of the phenomenon, and on theoretical treatments proposed in the literature to explain them.
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Affiliation(s)
- Federica Aiello
- National Research Council, Institute for Chemical and Physical Processes (CNR-IPCF), Via G. Moruzzi 1, 56124 Pisa, Italy
| | - Gloria Uccello Barretta
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (F.B.); (F.S.)
| | - Federica Balzano
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (F.B.); (F.S.)
| | - Fabio Spiaggia
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (F.B.); (F.S.)
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9
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Ghorai S, Natarajan R. Anion-Driven Programmable Chiral Self-Sorting in Metal-Organic Cages and Structural Transformations between Heterochiral and Homochiral Cages. Chemistry 2023; 29:e202203085. [PMID: 36300703 DOI: 10.1002/chem.202203085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Indexed: 12/12/2022]
Abstract
When a racemic mixture of chiral building blocks self-assembles to form discrete molecular or supramolecular cages, the system can adopt either social or narcissistic chiral self-sorting. However, control over such chiral self-sorting is hard to achieve with a desired choice of outcome. Herein, we report anion templated high-fidelity chiral self-sorting during the coordination-driven self-assembly of [Pd2 L4 ] metal-organic cages, with a racemic mixture of an axially chiral ligand. Upon varying the counter-anions, the outcome of the choice of chiral self-sorting, whether social or narcissistic, leading to kinetically favored heterochiral or thermodynamically favored homochiral cages, can be controlled through specific anion encapsulation. Non-encapsulating anion afforded a mixture of all possible diastereomers. Anion exchange enabled structural transformations between the diastereomers and the conversion of the mixture of diastereomers into homochiral diastereomers.
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Affiliation(s)
- Sandipan Ghorai
- Organic and Medicinal Chemistry Division, CSIR Indian Institute of Chemical Biology, 4 Raja S C Mullick Road, 700031, Kolkata, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ramalingam Natarajan
- Organic and Medicinal Chemistry Division, CSIR Indian Institute of Chemical Biology, 4 Raja S C Mullick Road, 700031, Kolkata, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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10
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Weh M, Shoyama K, Würthner F. Preferential molecular recognition of heterochiral guests within a cyclophane receptor. Nat Commun 2023; 14:243. [PMID: 36646685 PMCID: PMC9842753 DOI: 10.1038/s41467-023-35851-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 01/04/2023] [Indexed: 01/18/2023] Open
Abstract
The discrimination of enantiomers by natural receptors is a well-established phenomenon. In contrast the number of synthetic receptors with the capability for enantioselective molecular recognition of chiral substrates is scarce and for chiral cyclophanes indicative for a preferential binding of homochiral guests. Here we introduce a cyclophane composed of two homochiral core-twisted perylene bisimide (PBI) units connected by p-xylylene spacers and demonstrate its preference for the complexation of [5]helicene of opposite helicity compared to the PBI units of the host. The pronounced enantio-differentiation of this molecular receptor for heterochiral guests can be utilized for the enrichment of the P-PBI-M-helicene-P-PBI epimeric bimolecular complex. Our experimental results are supported by DFT calculations, which reveal that the sterically demanding bay substituents attached to the PBI chromophores disturb the helical shape match of the perylene core and homochiral substrates and thereby enforce the formation of syndiotactic host-guest complex structures. Hence, the most efficient substrate binding is observed for those aromatic guests, e. g. perylene, [4]helicene, phenanthrene and biphenyl, that can easily adapt in non-planar axially chiral conformations due to their inherent conformational flexibility. In all cases the induced chirality for the guest is opposed to those of the embedding PBI units, leading to heterochiral host-guest structures.
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Affiliation(s)
- Manuel Weh
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Kazutaka Shoyama
- Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
| | - Frank Würthner
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.
- Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany.
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11
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Wu G, Li F, Tang B, Zhang X. Molecular Engineering of Noncovalent Dimerization. J Am Chem Soc 2022; 144:14962-14975. [PMID: 35969112 DOI: 10.1021/jacs.2c02434] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Dimers are probably the simplest model to facilitate the understanding of fundamental physical and chemical processes that take place in much-expanded systems like aggregates, crystals, and other solid states. The molecular interplay within a dimer differentiates it from the corresponding monomeric state and determines its features. Molecular engineering of noncovalent dimerization through applied supramolecular restrictions enables additional control over molecular interplay, particularly over its dynamic aspect. This Perspective introduces the recent effort that has been made in the molecular engineering of noncovalent dimerization, including supramolecular dimers, folda-dimers, and macrocyclic dimers. It showcases how the variation in supramolecular restrictions endows molecular-based materials with improved performance and/or functions like enhanced emission, room-temperature phosphorescence, and effective catalysis. We particularly discuss pseudostatic dimers that can sustain molecular interplay for a long period of time, yet are still flexible enough to adapt to variations. The pseudostatic feature allows for active species to decay along an alternate pathway, thereby spinning off emerging features that are not readily accessible from conventional dynamic systems.
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Affiliation(s)
- Guanglu Wu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Fei Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Bohan Tang
- Key Laboratory of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xi Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China.,Key Laboratory of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
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12
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Penty S, Zwijnenburg MA, Orton GRF, Stachelek P, Pal R, Xie Y, Griffin SL, Barendt TA. The Pink Box: Exclusive Homochiral Aromatic Stacking in a Bis-perylene Diimide Macrocycle. J Am Chem Soc 2022; 144:12290-12298. [PMID: 35763425 PMCID: PMC9348826 DOI: 10.1021/jacs.2c03531] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This work showcases chiral complementarity in aromatic stacking interactions as an effective tool to optimize the chiroptical and electrochemical properties of perylene diimides (PDIs). PDIs are a notable class of robust dye molecules and their rich photo- and electrochemistry and potential chirality make them ideal organic building blocks for chiral optoelectronic materials. By exploiting the new bay connectivity of twisted PDIs, a dynamic bis-PDI macrocycle (the "Pink Box") is realized in which homochiral PDI-PDI π-π stacking interactions are switched on exclusively. Using a range of experimental and computational techniques, we uncover three important implications of the macrocycle's chiral complementarity for PDI optoelectronics. First, the homochiral intramolecular π-π interactions anchor the twisted PDI units, yielding enantiomers with half-lives extended over 400-fold, from minutes to days (in solution) or years (in the solid state). Second, homochiral H-type aggregation affords the macrocycle red-shifted circularly polarized luminescence and one of the highest dissymmetry factors of any small organic molecule in solution (glum = 10-2 at 675 nm). Finally, excellent through-space PDI-PDI π-orbital overlap stabilizes PDI reduced states, akin to covalent functionalization with electron-withdrawing groups.
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Affiliation(s)
- Samuel
E. Penty
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Martijn A. Zwijnenburg
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Georgia R. F. Orton
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Patrycja Stachelek
- Department
of Chemistry, University of Durham, South Road, Durham DH1 3LE, United
Kingdom
| | - Robert Pal
- Department
of Chemistry, University of Durham, South Road, Durham DH1 3LE, United
Kingdom
| | - Yujie Xie
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Sarah L. Griffin
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Timothy A. Barendt
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
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13
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Regiodivergent Synthesis and π‐Stacking‐Induced Chiral Self‐Recognition of Hexabenzocoronene‐Based [6]Helicenes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Liu C, Jin Y, Qi D, Ding X, Ren H, Wang H, Jiang J. Enantioselective assembly and recognition of heterochiral porous organic cages deduced from binary chiral components. Chem Sci 2022; 13:7014-7020. [PMID: 35774155 PMCID: PMC9200113 DOI: 10.1039/d2sc01876d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/20/2022] [Indexed: 11/21/2022] Open
Abstract
Chiral recognition and discrimination is not only of significance in biological processes but also a powerful method to fabricate functional supramolecular materials. Herein, a pair of heterochiral porous organic cages (HPOC-1), out of four possible enantiomeric products, with mirror stereoisomeric crystal structures were cleanly prepared by condensation occurring in the exclusive combination of cyclohexanediamine and binaphthol-based tetraaldehyde enantiomers. Nuclear magnetic resonance and luminescence spectroscopy have been employed to monitor the assembly process of HPOC-1, revealing the clean formation of heterochiral organic cages due to the enantioselective recognition of (S,S)-binaphthol towards (R,R)-cyclohexanediamine derivatives and vice versa. Interestingly, HPOC-1 exhibits circularly polarized luminescence and enantioselective recognition of chiral substrates according to the circular dichroism spectral change. Theoretical simulations have been carried out, rationalizing both the enantioselective assembly and recognition of HPOC-1.
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Affiliation(s)
- Chao Liu
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Yucheng Jin
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Dongdong Qi
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Xu Ding
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Huimin Ren
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Hailong Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Jianzhuang Jiang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
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15
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Tokoro Y, Nakayama G, Yamamoto S, Koizumi T. Tuning Solid‐State Emission Behavior of Janus‐Type Anthracenes by Addition of Shielding Bridges. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yuichiro Tokoro
- Department of Applied Chemistry School of Applied Science National Defense Academy of Japan 1-10-20 Hashirimizu Yokosuka Kanagawa 240-8501 Japan
| | - Genta Nakayama
- Department of Applied Chemistry School of Applied Science National Defense Academy of Japan 1-10-20 Hashirimizu Yokosuka Kanagawa 240-8501 Japan
| | - Shin‐ichi Yamamoto
- Department of Applied Chemistry School of Applied Science National Defense Academy of Japan 1-10-20 Hashirimizu Yokosuka Kanagawa 240-8501 Japan
| | - Toshio Koizumi
- Department of Applied Chemistry School of Applied Science National Defense Academy of Japan 1-10-20 Hashirimizu Yokosuka Kanagawa 240-8501 Japan
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16
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Renner R, Mahlmeister B, Anhalt O, Stolte M, Würthner F. Chiral Perylene Bisimide Dyes by Interlocked Arene Substituents in the Bay Area. Chemistry 2021; 27:11997-12006. [PMID: 34133048 PMCID: PMC8456824 DOI: 10.1002/chem.202101877] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Indexed: 11/18/2022]
Abstract
A series of perylene bisimide (PBI) dyes bearing various aryl substituents in 1,6,7,12 bay positions has been synthesized by Suzuki cross-coupling reaction. These molecules exhibit an exceptionally large and conformationally fixed twist angle of the PBI π-core due to the high steric congestion imparted by the aryl substituents in bay positions. Single crystal X-ray analyses of phenyl-, naphthyl- and pyrenyl-functionalized PBIs reveal interlocked π-π-stacking motifs, leading to conformational chirality and the possibility for the isolation of enantiopure atropoisomers by semipreparative HPLC. The interlocked arrangement endows these molecules with substantial racemization barriers of about 120 kJ mol-1 for the tetraphenyl- and tetra-2-naphthyl-substituted derivatives, which is among the highest racemization barriers for axially chiral PBIs. Variable temperature NMR studies reveal the presence of a multitude of up to fourteen conformational isomers in solution that are interconverted via smaller activation barriers of about 65 kJ mol-1 . The redox and optical properties of these core-twisted PBIs have been characterized by cyclic voltammetry, UV/Vis/NIR and fluorescence spectroscopy and their respective atropo-enantiomers were further characterized by circular dichroism (CD) and circular polarized luminescence (CPL) spectroscopy.
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Affiliation(s)
- Rebecca Renner
- Institut für Organische ChemieUniversität WürzburgAm Hubland97074WürzburgGermany
| | - Bernhard Mahlmeister
- Center for Nanosystems Chemistry (CNC)Universität WürzburgTheodor-Boveri-Weg97074WürzburgGermany
| | - Olga Anhalt
- Center for Nanosystems Chemistry (CNC)Universität WürzburgTheodor-Boveri-Weg97074WürzburgGermany
| | - Matthias Stolte
- Institut für Organische ChemieUniversität WürzburgAm Hubland97074WürzburgGermany
- Center for Nanosystems Chemistry (CNC)Universität WürzburgTheodor-Boveri-Weg97074WürzburgGermany
| | - Frank Würthner
- Institut für Organische ChemieUniversität WürzburgAm Hubland97074WürzburgGermany
- Center for Nanosystems Chemistry (CNC)Universität WürzburgTheodor-Boveri-Weg97074WürzburgGermany
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17
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Weh M, Rühe J, Herbert B, Krause AM, Würthner F. Deracemization of Carbohelicenes by a Chiral Perylene Bisimide Cyclophane Template Catalyst. Angew Chem Int Ed Engl 2021; 60:15323-15327. [PMID: 33909943 PMCID: PMC8362091 DOI: 10.1002/anie.202104591] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Indexed: 12/16/2022]
Abstract
Deracemization describes the conversion of a racemic mixture of a chiral molecule into an enantioenriched mixture or an enantiopure compound without structural modifications. Herein, we report an inherently chiral perylene bisimide (PBI) cyclophane whose chiral pocket is capable of transforming a racemic mixture of [5]-helicene into an enantioenriched mixture with an enantiomeric excess of 66 %. UV/Vis and fluorescence titration studies reveal this cyclophane host composed of two helically twisted PBI dyes has high binding affinities for the respective homochiral carbohelicene guests, with outstanding binding constants of up to 3.9×1010 m-1 for [4]-helicene. 2D NMR studies and single-crystal X-ray analysis demonstrate that the observed strong and enantioselective binding of homochiral carbohelicenes and the successful template-catalyzed deracemization of [5]-helicene can be explained by the enzyme-like perfect shape complementarity of the macrocyclic supramolecular host.
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Affiliation(s)
- Manuel Weh
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Jessica Rühe
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Benedikt Herbert
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Ana-Maria Krause
- Center for Nanosystems Chemistry (CNC), Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
| | - Frank Würthner
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Center for Nanosystems Chemistry (CNC), Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
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18
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Weh M, Rühe J, Herbert B, Krause A, Würthner F. Deracemization of Carbohelicenes by a Chiral Perylene Bisimide Cyclophane Template Catalyst. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104591] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Manuel Weh
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Jessica Rühe
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Benedikt Herbert
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Ana‐Maria Krause
- Center for Nanosystems Chemistry (CNC) Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Frank Würthner
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
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19
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Wagner P, Rominger F, Zhang W, Gross JH, Elbert SM, Schröder RR, Mastalerz M. Chiral Self-sorting of Giant Cubic [8+12] Salicylimine Cage Compounds. Angew Chem Int Ed Engl 2021; 60:8896-8904. [PMID: 33476442 PMCID: PMC8048989 DOI: 10.1002/anie.202016592] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/21/2021] [Indexed: 12/13/2022]
Abstract
Chiral self-sorting is intricately connected to the complicated chiral processes observed in nature and no artificial systems of comparably complexity have been generated by chemists. However, only a few examples of purely organic molecules have been reported so far, where the self-sorting process could be controlled. Herein, we describe the chiral self-sorting of large cubic [8+12] salicylimine cage compounds based on a chiral TBTQ precursor. Out of 23 possible cage isomers only the enantiopure and a meso cage were observed to be formed, which have been unambiguously characterized by single crystal X-ray diffraction. Furthermore, by careful choice of solvent the formation of meso cage could be controlled. With internal diameters of din =3.3-3.5 nm these cages are among the largest organic cage compounds characterized and show very high specific surface areas up to approx. 1500 m2 g-1 after desolvation.
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Affiliation(s)
- Philippe Wagner
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Frank Rominger
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Wen‐Shan Zhang
- Centre for Advanced MaterialsRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 22569120HeidelbergGermany
| | - Jürgen H. Gross
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Sven M. Elbert
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Rasmus R. Schröder
- Centre for Advanced MaterialsRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 22569120HeidelbergGermany
| | - Michael Mastalerz
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
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20
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Bialas D, Kirchner E, Röhr MIS, Würthner F. Perspectives in Dye Chemistry: A Rational Approach toward Functional Materials by Understanding the Aggregate State. J Am Chem Soc 2021; 143:4500-4518. [DOI: 10.1021/jacs.0c13245] [Citation(s) in RCA: 87] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- David Bialas
- Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Eva Kirchner
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Merle I. S. Röhr
- Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
| | - Frank Würthner
- Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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21
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Wagner P, Rominger F, Zhang W, Gross JH, Elbert SM, Schröder RR, Mastalerz M. Chiral Self‐sorting of Giant Cubic [8+12] Salicylimine Cage Compounds. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016592] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Philippe Wagner
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Frank Rominger
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Wen‐Shan Zhang
- Centre for Advanced Materials Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 225 69120 Heidelberg Germany
| | - Jürgen H. Gross
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Sven M. Elbert
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Rasmus R. Schröder
- Centre for Advanced Materials Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 225 69120 Heidelberg Germany
| | - Michael Mastalerz
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
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22
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Affiliation(s)
- Yimin Liang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, Zhejiang 310024, P. R. China
- Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, Zhejiang 310024, P. R. China
| | - Min Tang
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, Zhejiang 310024, P. R. China
- Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, Zhejiang 310024, P. R. China
| | - Zhichang Liu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, Zhejiang 310024, P. R. China
- Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, Zhejiang 310024, P. R. China
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23
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Aida Y, Nogami J, Sugiyama H, Uekusa H, Tanaka K. Enantioselective Synthesis of Polycyclic Aromatic Hydrocarbon (PAH)-Based Planar Chiral Bent Cyclophanes by Rhodium-Catalyzed [2+2+2] Cycloaddition. Chemistry 2020; 26:12579-12588. [PMID: 32350943 DOI: 10.1002/chem.202001450] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/28/2020] [Indexed: 11/08/2022]
Abstract
The enantioselective synthesis of polycyclic aromatic hydrocarbon (PAH)-based planar chiral cyclophanes was achieved for the first time by the rhodium-catalyzed intramolecular regio- and enantioselective [2+2+2] cycloaddition of tethered diyne-benzofulvenes followed by stepwise oxidative transformations. The thus synthesized planar chiral bent cyclophanes, that possess bent p-terphenyl- and 9-fluorenone-cores, were converted to 9-fluorenol-based ones with excellent ee values of >99 % by diastereoselective 1,2-reduction. These 9-fluorenol-based cyclophanes exhibited high fluorescence quantum yields, which were significantly higher than that of an acyclic reference molecule (78-82 % vs. 48 %). The bending effect on the chiroptical property was also examined, which revealed that the anisotropy factors (gabs values) for electronic circular dichroism (ECD) of these 9-fluorenol-based planar chiral bent cyclophanes increase as the tether length becomes shorter.
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Affiliation(s)
- Yukimasa Aida
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Juntaro Nogami
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Haruki Sugiyama
- Research and Education Center for Natural Sciences, Keio University, Hiyoshi 4-1-1, Kohoku, Yokohama, Japan
| | - Hidehiro Uekusa
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
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24
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Henderson WR, Castellano RK. Supramolecular polymerization of chiral molecules devoid of chiral centers. POLYM INT 2020. [DOI: 10.1002/pi.6111] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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25
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Pham AT, Matile S. Peptide Stapling with Anion-π Catalysts. Chem Asian J 2020; 15:1562-1566. [PMID: 32311232 DOI: 10.1002/asia.202000309] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/01/2020] [Indexed: 12/12/2022]
Abstract
We report design, synthesis and evaluation of a series of naphthalenediimides (NDIs) that are bridged with short peptides. Reminiscent of peptide stapling technologies, the macrocycles are conveniently accessible by a chromogenic nucleophilic aromatic substitution of two bromides in the NDI core with two thiols from cysteine sidechains. The dimension of core-bridged NDIs matches that of one turn of an α helix. NDI-stapled peptides exist as two, often separable atropisomers. Introduction of tertiary amine bases in amino-acid sidechains above the π-acidic NDI surface affords operational anion-π catalysts. According to an enolate chemistry benchmark reaction, anion-π catalysis next to peptides occurs with record chemoselectivity but weak enantioselectivity. Catalytic activity drops with increasing distance of the amine base to the NDI surface, looser homocysteine bridges, mismatched, shortened and elongated α-helix turns, and acyclic peptide controls. Elongation of isolated turns into short α helices significantly increases activity. This increase is consistent with remote control of anion-π catalysis from the α-helix macrodipole.
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Affiliation(s)
- Anh-Tuan Pham
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland
| | - Stefan Matile
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland
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26
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Günther BAR, Höfener S, Zschieschang U, Wadepohl H, Klauk H, Gade LH. Twisting the TAPPs: Bay-Substituted Non-planar Tetraazapero-pyrenes and their Reduced Anions. Chemistry 2019; 25:14669-14678. [PMID: 31529719 PMCID: PMC7687186 DOI: 10.1002/chem.201903413] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/30/2019] [Indexed: 01/08/2023]
Abstract
A new synthesis of tetraazaperopyrenes (TAPPs) starting from a halogenated perylene derivative 3,4,9,10- tetrabromo-1,6,7,12-tetrachloroperylene (1) gave access to bay-substituted TAPPs for the first time. Selective lithiation of the bromine-positions and subsequent addition of tosyl azide led to the formation of the tetraazidotetrachloroperylene (2), which was subsequently reduced by addition of sodium borohydride to the corresponding tetraaminotetrachloroperylene (3). Oxidation to its semiquinoidal form 4 and subsequent cyclization with acid chlorides gave rise to a series of bay-chlorinated TAPPs. Whereas the aromatic core of the previously studied ortho-substituted TAPPs was found to be planar, the steric pressure of the two chlorine substituents on each side leads to the twist of the peropyrene core of approximately 30 degrees, a structural feature also observed in other bay-substituted perylene derivatives. An experimental and computational analysis reveals that introducing chloride substituents at these positions leads to slightly increased electron affinities (EA) enabling the selective generation and characterization of the reduced mono-anionic radicals and closed shell di-anionic species. These anions were isolated and characterized by UV/Vis spectroscopy and EPR or NMR, respectively. Processing of the bay-chlorinated TAPPs in n-channel organic TFTs revealed electron mobilities of 0.001 to 0.003 cm2 V-1 s-1 . These reduced electron mobilities compared to the ortho-halogenated TAPPs are thought to be rooted in the less densely packed solid-state structures.
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Affiliation(s)
- Benjamin A. R. Günther
- Anorganisch-Chemisches-InstitutUniversität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Sebastian Höfener
- Institute of Physical ChemistryKarlsruhe Institute of Technology (KIT) P.O. Box 698076049KarlsruheGermany
| | - Ute Zschieschang
- Max Planck Institute for Solid State ResearchHeisenbergstr. 170569StuttgartGermany
| | - Hubert Wadepohl
- Anorganisch-Chemisches-InstitutUniversität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Hagen Klauk
- Max Planck Institute for Solid State ResearchHeisenbergstr. 170569StuttgartGermany
| | - Lutz H. Gade
- Anorganisch-Chemisches-InstitutUniversität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
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27
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Shang X, Song I, Lee JH, Choi W, Ohtsu H, Jung GY, Ahn J, Han M, Koo JY, Kawano M, Kwak SK, Oh JH. Heterochiral Doped Supramolecular Coordination Networks for High-Performance Optoelectronics. ACS APPLIED MATERIALS & INTERFACES 2019; 11:20174-20182. [PMID: 31045348 DOI: 10.1021/acsami.9b04653] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Chiral self-sorting has great potential for constructing new complex structures and determining chirality-dependent properties in multicomponent mixtures. However, it is still of great challenge to achieve high fidelity chiral self-discrimination. Besides, the researches on the coordination polymers or metal-organic frameworks for micro/nanooptoelectronics are still rare due to their low conductivity and difficulty in developing a rapid and simple scale-up synthetic method. Here, heterochiral supramolecular coordination networks (SCNs) were synthesized by the solvothermal reaction of naphthalene diimide enantiomers and cadmium iodide, using the chirality as a synthetic tuning parameter to control the morphologies. Intriguingly, heterochiral micro/nanocrystals exhibited photochromic and photodetecting properties. Furthermore, we also developed a simple and efficient doping method to enhance the conductivity and photoresponsivity of micro/nanocrystals using hydrazine. From experimental and theoretical studies, the mechanism was suggested as follows: the radicals in the singly occupied molecular orbital level of the ligands provide charge carriers that can undergo "through-space" transport between π-π stacked ligands and the electron transfer from adsorbed hydrazine to the SCNs results in reduction of energy gap, leading to increased conductivity. Our findings demonstrate a simple and powerful strategy for implementing coordination networks with redox ligands for micro/nanooptoelectronic applications.
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Affiliation(s)
- Xiaobo Shang
- School of Chemical and Biological Engineering, Institute of Chemical Processes , Seoul National University , 1 Gwanak-ro , Gwanak-gu, Seoul 08826 , Republic of Korea
| | - Inho Song
- School of Chemical and Biological Engineering, Institute of Chemical Processes , Seoul National University , 1 Gwanak-ro , Gwanak-gu, Seoul 08826 , Republic of Korea
| | - Jeong Hyeon Lee
- Department of Energy Engineering, School of Energy and Chemical Engineering , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
| | | | - Hiroyoshi Ohtsu
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1 Ookayama , Meguro-ku, Tokyo 152-8550 , Japan
| | - Gwan Yeong Jung
- Department of Energy Engineering, School of Energy and Chemical Engineering , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
| | - Jaeyong Ahn
- School of Chemical and Biological Engineering, Institute of Chemical Processes , Seoul National University , 1 Gwanak-ro , Gwanak-gu, Seoul 08826 , Republic of Korea
| | | | | | - Masaki Kawano
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1 Ookayama , Meguro-ku, Tokyo 152-8550 , Japan
| | - Sang Kyu Kwak
- Department of Energy Engineering, School of Energy and Chemical Engineering , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
| | - Joon Hak Oh
- School of Chemical and Biological Engineering, Institute of Chemical Processes , Seoul National University , 1 Gwanak-ro , Gwanak-gu, Seoul 08826 , Republic of Korea
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28
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Mannancherry R, Devereux M, Häussinger D, Mayor M. Molecular Ansa-Basket: Synthesis of Inherently Chiral All-Carbon [12](1,6)Pyrenophane. J Org Chem 2019; 84:5271-5276. [PMID: 30945543 DOI: 10.1021/acs.joc.9b00255] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis of inherently chiral all-carbon C2-symmetric [12](1,6)pyrenophane 1 is reported. The cyclophane 1 was obtained via a ring-closing alkyne metathesis reaction using Mortreux's catalyst molybdenum hexacarbonyl and 2-fluorophenol as a phenol additive. The M and P enantiomers of the all-carbon pyrenophane 1 were demonstrated to be very stable in their enantiopure form even upon prolonged heating at 200 °C. [12](1,6)Pyrenophane-6-yne 1 was fully characterized by high-resolution mass spectrometry, nuclear magnetic resonance, UV-vis, and measured and calculated electronic circular dichroism spectroscopy.
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Affiliation(s)
- Rajesh Mannancherry
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , 4056 Basel , Switzerland
| | - Mike Devereux
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , 4056 Basel , Switzerland
| | - Daniel Häussinger
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , 4056 Basel , Switzerland
| | - Marcel Mayor
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , 4056 Basel , Switzerland.,Institute for Nanotechnology (INT) , Karlsruhe Institute of Technology (KIT) , P. O. Box 3640, 76021 Karlsruhe , Germany.,Lehn Institute of Functional Materials (LIFM), School of Chemistry , Sun Yat-Sen University (SYSU) , 510275 Guangzhou , China
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29
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Zhan YY, Kojima T, Ishii K, Takahashi S, Haketa Y, Maeda H, Uchiyama S, Hiraoka S. Temperature-controlled repeatable scrambling and induced-sorting of building blocks between cubic assemblies. Nat Commun 2019; 10:1440. [PMID: 30926927 PMCID: PMC6441092 DOI: 10.1038/s41467-019-09495-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 03/12/2019] [Indexed: 12/28/2022] Open
Abstract
Separation of a homogeneous mixture of different components to reach an ordered out-of-equilibrium state in solution has attracted continuous attention. While this can be achieved using external chemical fuels or photo energy, an alternative energy source is heat. Here we realize a temperature-controlled cycle of transitions between ordered and disordered states based on a mixture of two kinds of building blocks that self-assemble into cubic structures (nanocubes). An almost statistical mixture of nanocubes (disordered state) is thermodynamically most stable at lower temperature (25 °C), while homoleptic assemblies composed of single components are preferentially produced at higher temperature (100 °C) followed by rapid cooling. The scrambling of the building blocks between the nanocubes takes place through the exchange of free building blocks dissociated from the nanocubes. Based on this mechanism, it is possible to accelerate, retard, and perfectly block the scrambling by the guest molecules encapsulated in the nanocubes. In this paper, the authors study the temperature-controlled dynamic behavior of a system of nanocubes self-assembled from two different building blocks. Non-intuitively, the disordered, equilibrium state (a mixture of heteroleptic cubes) and the ordered, out-of-equilibrium state (a mixture of homoleptic cubes) are cycled by heating and subsequent rapid cooling.
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Affiliation(s)
- Yi-Yang Zhan
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Tatsuo Kojima
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Kentaro Ishii
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, 444-8787, Japan
| | - Satoshi Takahashi
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Yohei Haketa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga, 525-8577, Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga, 525-8577, Japan
| | - Susumu Uchiyama
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, 444-8787, Japan.,Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Shuichi Hiraoka
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan.
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30
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Mohan Nalluri SK, Zhou J, Cheng T, Liu Z, Nguyen MT, Chen T, Patel HA, Krzyaniak MD, Goddard WA, Wasielewski MR, Stoddart JF. Discrete Dimers of Redox-Active and Fluorescent Perylene Diimide-Based Rigid Isosceles Triangles in the Solid State. J Am Chem Soc 2019; 141:1290-1303. [PMID: 30537816 DOI: 10.1021/jacs.8b11201] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The development of rigid covalent chiroptical organic materials, with multiple, readily available redox states, which exhibit high photoluminescence, is of particular importance in relation to both organic electronics and photonics. The chemically stable, thermally robust, and redox-active perylene diimide (PDI) fluorophores have received ever-increasing attention owing to their excellent fluorescence quantum yields in solution. Planar PDI derivatives, however, generally suffer from aggregation-caused emission quenching in the solid state. Herein, we report on the design and synthesis of two chiral isosceles triangles, wherein one PDI fluorophore and two pyromellitic diimide (PMDI) or naphthalene diimide (NDI) units are arranged in a rigid cyclic triangular geometry. The optical, electronic, and magnetic properties of the rigid isosceles triangles are fully characterized by a combination of optical spectroscopies, X-ray diffraction (XRD), cyclic voltammetry, and computational modeling techniques. Single-crystal XRD analysis shows that both isosceles triangles form discrete, nearly cofacial PDI-PDI π-dimers in the solid state. While the triangles exhibit fluorescence quantum yields of almost unity in solution, the dimers in the solid state exhibit very weak-yet at least an order of magnitude higher-excimer fluorescence yield in comparison with the almost completely quenched fluorescence of a reference PDI. The triangle containing both NDI and PDI subunits shows superior intramolecular energy transfer from the lowest excited singlet state of the NDI to that of the PDI subunit. Cyclic voltammetry suggests that both isosceles triangles exhibit multiple, easily accessible, and reversible redox states. Applications beckon in arenas related to molecular optoelectronic devices.
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Affiliation(s)
- Siva Krishna Mohan Nalluri
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Jiawang Zhou
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States.,Institute for Sustainability and Energy at Northwestern , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Tao Cheng
- Materials and Process Simulation Center , California Institute of Technology , Pasadena , California 91125 , United States
| | - Zhichang Liu
- School of Science , Westlake University , 18 Shilongshan Road , Hangzhou 310024 , China
| | - Minh T Nguyen
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Tianyang Chen
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Hasmukh A Patel
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Matthew D Krzyaniak
- Institute for Sustainability and Energy at Northwestern , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - William A Goddard
- Materials and Process Simulation Center , California Institute of Technology , Pasadena , California 91125 , United States
| | - Michael R Wasielewski
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States.,Institute for Sustainability and Energy at Northwestern , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - J Fraser Stoddart
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States.,Institute for Molecular Design and Synthesis , Tianjin University , 92 Weijin Road, Nankai District , Tianjin 300072 , China.,School of Chemistry , University of New South Wales , Sydney , NSW 2052 , Australia
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31
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Sapotta M, Spenst P, Saha-Möller CR, Würthner F. Guest-mediated chirality transfer in the host–guest complexes of an atropisomeric perylene bisimide cyclophane host. Org Chem Front 2019. [DOI: 10.1039/c9qo00172g] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Chirality transfer upon preferential binding of homochiral guests to one stereoisomer of a conformationally equilibrated atropisomeric cyclophane is reported.
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Affiliation(s)
- Meike Sapotta
- Institut für Organische Chemie
- Universität Würzburg
- 97074 Würzburg
- Germany
| | - Peter Spenst
- Institut für Organische Chemie
- Universität Würzburg
- 97074 Würzburg
- Germany
| | | | - Frank Würthner
- Institut für Organische Chemie
- Universität Würzburg
- 97074 Würzburg
- Germany
- Center for Nanosystems Chemistry (CNC)
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32
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Chen MT, Zhang Y, Vysotsky MO, Lindner JO, Li MH, Lin MJ, Würthner F. 1,1′-Bi(2-naphthol-4,5-dicarboximide)s: blue emissive axially chiral scaffolds with aggregation-enhanced emission properties. Org Chem Front 2019. [DOI: 10.1039/c9qo01090d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Novel electron-deficient 1,1′-binaphthol derivatives bearing two dicarboximide groups at the peri-positions show intense blue luminescence and aggregation-enhanced emission characteristics.
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Affiliation(s)
- Meng-Ting Chen
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- 350116 Fuzhou
- China
| | - Yang Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- 350116 Fuzhou
- China
| | - Myroslav O. Vysotsky
- Institut für Organische Chemie & Center for Nanosystems Chemistry
- Universität Würzburg
- 97074 Würzburg
- Germany
| | - Joachim O. Lindner
- Institut für Organische Chemie & Center for Nanosystems Chemistry
- Universität Würzburg
- 97074 Würzburg
- Germany
| | - Meng-Hua Li
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- 350116 Fuzhou
- China
| | - Mei-Jin Lin
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- 350116 Fuzhou
- China
| | - Frank Würthner
- Institut für Organische Chemie & Center for Nanosystems Chemistry
- Universität Würzburg
- 97074 Würzburg
- Germany
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33
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Abstract
Twisting linear acenes out of planarity affects their electronic and optical properties, and induces chirality. However, it is difficult to isolate the effect of twisting from the substituent effect. Moreover, many twistacenes (twisted acenes) readily racemize in solution. Here, we introduce a series of twistacenes having an anthracene backbone diagonally tethered by an n-alkyl bridge, which induces a twist of various angles. This allows us to systematically monitor the effect of twisting on electronic and optical properties. We find that absorption is bathochromically shifted with increasing twist, while fluorescence quantum efficiency drops dramatically. The tethered twistacenes were isolated to their enantiomerically pure form, displaying strong chiroptical properties and anisotropy factor ( g-value). No racemization was observed even upon prolonged heating, rendering these tethered twistacenes suitable as enantiopure helical building units for π-conjugated backbones.
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Affiliation(s)
- Anjan Bedi
- Institute of Chemistry , The Hebrew University of Jerusalem, Edmond J. Safra Campus , Jerusalem 91904 , Israel
| | - Linda J W Shimon
- Chemical Research Support Unit , Weizmann Institute of Science , Rehovot 76100 , Israel
| | - Ori Gidron
- Institute of Chemistry , The Hebrew University of Jerusalem, Edmond J. Safra Campus , Jerusalem 91904 , Israel
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34
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Hiraoka S. Unresolved Issues that Remain in Molecular Self-Assembly. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180008] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Shuichi Hiraoka
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
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35
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Chiral self-sorting process in the self-assembly of homochiral coordination cages from axially chiral ligands. Commun Chem 2018. [DOI: 10.1038/s42004-018-0020-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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36
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Supramolecular features of 2-(chlorophenyl)-3-[(chlorobenzylidene)-amino]-2,3-dihydroquinazolin-4(1 H )-ones: A combined experimental and computational study. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.10.085] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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37
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Zwoliński KM, Sieroń L, Eilmes J. One-flask synthesis of dibenzotetraaza[14]annulene cyclic congeners bearing buta-1,3-diyne bridges. Org Chem Front 2018. [DOI: 10.1039/c7qo00821j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glaser–Hay and Glaser–Eglinton coupling conditions were applied to the direct synthesis of a cyclic strapped ligand and its corresponding dimer in 44% and 30% yields respectively.
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Affiliation(s)
- K. M. Zwoliński
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Krakow
- Poland
| | - L. Sieroń
- Institute of General and Ecological Chemistry
- Lodz University of Technology
- 90-924 Lodz
- Poland
| | - J. Eilmes
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Krakow
- Poland
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38
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Gong HX, Cao Z, Li MH, Liao SH, Lin MJ. Photoexcited perylene diimide radical anions for the reduction of aryl halides: a bay-substituent effect. Org Chem Front 2018. [DOI: 10.1039/c8qo00445e] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Photoexcited perylene diimide radical anions exhibit remarkable substituent-dependent photocatalytic activities towards the reduction of aryl halides, which are mainly controlled by their excited-state reduction potentials and SOMO−1 energies.
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Affiliation(s)
- Hai-Xian Gong
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- China
| | - Zhu Cao
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- China
| | - Meng-Hua Li
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- China
| | - Sai-Hu Liao
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- China
| | - Mei-Jin Lin
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- China
- State Key Laboratory of Structural Chemistry
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39
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Nagura K, Inoue R, Takai A, Sugiyasu K, Takeuchi M. “π-Figuration” for Controlling Stacking of π-Conjugated Molecules and Polymers. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | - Atsuro Takai
- Molecular Design & Function Group, National Institute for Materials Science
| | - Kazunori Sugiyasu
- Molecular Design & Function Group, National Institute for Materials Science
| | - Masayuki Takeuchi
- Molecular Design & Function Group, National Institute for Materials Science
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40
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Pakalidou N, Cheung DL, Masters AJ, Avendaño C. Macroscopic chiral symmetry breaking in monolayers of achiral nonconvex platelets. SOFT MATTER 2017; 13:8618-8624. [PMID: 29114688 DOI: 10.1039/c7sm01840a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The fabrication of chiral structures using achiral building blocks is a fundamental problem that remains a challenge in materials science. In this work we present a molecular dynamics simulation study of nonconvex polygonal platelets, interacting via soft-repulsive interactions, that are confined in two-dimensional space. These particle models are designed to promote, even at moderate densities, a natural offset displacement between the edges of neighbouring particles. In particular we demonstrate that nonconvex platelets exhibit macroscopic chiral symmetry breaking when the symmetry of the particles equals (or is multiple of) the number of nearest neighbours in the condensed crystalline phase, corresponding to the situation of platelets with 4-, 6-, and 12-fold symmetries.
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Affiliation(s)
- Nikoletta Pakalidou
- School of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
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41
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Sarkar A, Dhiman S, Chalishazar A, George SJ. Visualization of Stereoselective Supramolecular Polymers by Chirality-Controlled Energy Transfer. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708267] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Aritra Sarkar
- Supramolecular Chemistry Laboratory; New Chemistry Unit; Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR); Jakkur Bangalore 560064 India
| | - Shikha Dhiman
- Supramolecular Chemistry Laboratory; New Chemistry Unit; Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR); Jakkur Bangalore 560064 India
| | - Aditya Chalishazar
- Supramolecular Chemistry Laboratory; New Chemistry Unit; Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR); Jakkur Bangalore 560064 India
| | - Subi J. George
- Supramolecular Chemistry Laboratory; New Chemistry Unit; Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR); Jakkur Bangalore 560064 India
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42
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Sarkar A, Dhiman S, Chalishazar A, George SJ. Visualization of Stereoselective Supramolecular Polymers by Chirality-Controlled Energy Transfer. Angew Chem Int Ed Engl 2017; 56:13767-13771. [DOI: 10.1002/anie.201708267] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Aritra Sarkar
- Supramolecular Chemistry Laboratory; New Chemistry Unit; Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR); Jakkur Bangalore 560064 India
| | - Shikha Dhiman
- Supramolecular Chemistry Laboratory; New Chemistry Unit; Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR); Jakkur Bangalore 560064 India
| | - Aditya Chalishazar
- Supramolecular Chemistry Laboratory; New Chemistry Unit; Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR); Jakkur Bangalore 560064 India
| | - Subi J. George
- Supramolecular Chemistry Laboratory; New Chemistry Unit; Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR); Jakkur Bangalore 560064 India
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43
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Nowak-Król A, Röhr MIS, Schmidt D, Würthner F. A Crystalline π-Stack Containing Five Stereoisomers: Insights into Conformational Isomorphism, Chirality Inversion, and Disorder. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705445] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Agnieszka Nowak-Król
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) & Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Merle I. S. Röhr
- Center for Nanosystems Chemistry (CNC) & Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
- Institut für Physikalische und Theoretische Chemie; Universität Würzburg; Emil-Fischer-Strasse 42 97074 Würzburg Germany
| | - David Schmidt
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) & Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Frank Würthner
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) & Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
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44
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Nowak-Król A, Röhr MIS, Schmidt D, Würthner F. A Crystalline π-Stack Containing Five Stereoisomers: Insights into Conformational Isomorphism, Chirality Inversion, and Disorder. Angew Chem Int Ed Engl 2017; 56:11774-11778. [DOI: 10.1002/anie.201705445] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Agnieszka Nowak-Król
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) & Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Merle I. S. Röhr
- Center for Nanosystems Chemistry (CNC) & Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
- Institut für Physikalische und Theoretische Chemie; Universität Würzburg; Emil-Fischer-Strasse 42 97074 Würzburg Germany
| | - David Schmidt
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) & Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Frank Würthner
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) & Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
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45
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Shang X, Song I, Ohtsu H, Lee YH, Zhao T, Kojima T, Jung JH, Kawano M, Oh JH. Supramolecular Nanostructures of Chiral Perylene Diimides with Amplified Chirality for High-Performance Chiroptical Sensing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605828. [PMID: 28370408 DOI: 10.1002/adma.201605828] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 02/17/2017] [Indexed: 05/21/2023]
Abstract
Chiral supramolecular nanostructures with optoelectronic functions are expected to play a central role in many scientific and technological fields but their practical use remains in its infancy. Here, this paper reports photoconductive chiral organic semiconductors (OSCs) based on perylene diimides with the highest electron mobility among the chiral OSCs and investigates the structure and optoelectronic properties of their homochiral and heterochiral supramolecular assemblies from bottom-up self-assembly. Owing to the well-ordered supramolecular packing, the homochiral nanomaterials exhibit superior charge transport with significantly higher photoresponsivity and dissymmetry factor compared with those of their thin film and monomeric equivalents, which enables highly selective detection of circularly polarized light, for the first time, in visible spectral range. Interestingly, the heterochiral nanostructures assembled from co-self-assembly of racemic mixtures show extraordinary chiral self-discrimination phenomenon, where opposite enantiomeric molecules are packed alternately into heterochiral architectures, leading to completely different optoelectrical performances. In addition, the crystal structures of homochiral and heterochiral nanostructures have first been studied by ab initio X-ray powder diffraction analysis. These findings give insights into the structure-chiroptical property relationships of chiral supramolecular self-assemblies and demonstrate the feasibility of supramolecular chirality for high-performance chiroptical sensing.
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Affiliation(s)
- Xiaobo Shang
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 790-784, South Korea
| | - Inho Song
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 790-784, South Korea
| | - Hiroyoshi Ohtsu
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Yoon Ho Lee
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 790-784, South Korea
| | - Tianming Zhao
- Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 790-784, South Korea
| | - Tatsuhiro Kojima
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
| | - Ji Hyung Jung
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 790-784, South Korea
| | - Masaki Kawano
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Joon Hak Oh
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 790-784, South Korea
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46
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Storch G, Haas M, Trapp O. Attracting Enantiomers: Chiral Analytes That Are Simultaneously Shift Reagents Allow Rapid Screening of Enantiomeric Ratios by NMR Spectroscopy. Chemistry 2017; 23:5414-5418. [DOI: 10.1002/chem.201700461] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Golo Storch
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstr. 5–13 81377 München Germany
| | - Maren Haas
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstr. 5–13 81377 München Germany
- Max-Planck-Institute for Astronomy Königstuhl 17 69117 Heidelberg Germany
| | - Oliver Trapp
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstr. 5–13 81377 München Germany
- Max-Planck-Institute for Astronomy Königstuhl 17 69117 Heidelberg Germany
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47
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Mihara N, Yamada Y, Takaya H, Kitagawa Y, Aoyama S, Igawa K, Tomooka K, Tanaka K. Oxygen Reduction to Water by a Cofacial Dimer of Iron(III)–Porphyrin and Iron(III)–Phthalocyanine Linked through a Highly Flexible Fourfold Rotaxane. Chemistry 2017; 23:7508-7514. [DOI: 10.1002/chem.201700082] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Nozomi Mihara
- Department of Chemistry Faculty of Science Nagoya University, Furo-cho, Chikusa-ku Nagoya 464-8602 Japan
| | - Yasuyuki Yamada
- Department of Chemistry Faculty of Science Nagoya University, Furo-cho, Chikusa-ku Nagoya 464-8602 Japan
- Research Center for Materials Science Nagoya University, Furo-cho, Chikusa-ku Nagoya 464-8602 Japan
| | - Hikaru Takaya
- IRCELS Institute for Chemical Research Kyoto University, Gokasho Uji-city Kyoto 611-0011 Japan
| | - Yasutaka Kitagawa
- Division of Chemical Engineering Department of Materials Engineering Science Graduate School of Engineering Science Osaka University 1–3 Machikaneyama-cho, Toyonaka Osaka 560-8531 Japan
| | - Shin Aoyama
- Institute for Materials Chemistry and Engineering and Department of Material and Molecular Sciences Kyushu University, Kasuga-Koen, Kasuga Fukuoka 816-8580 Japan
| | - Kazunobu Igawa
- Institute for Materials Chemistry and Engineering and Department of Material and Molecular Sciences Kyushu University, Kasuga-Koen, Kasuga Fukuoka 816-8580 Japan
| | - Katsuhiko Tomooka
- Institute for Materials Chemistry and Engineering and Department of Material and Molecular Sciences Kyushu University, Kasuga-Koen, Kasuga Fukuoka 816-8580 Japan
| | - Kentaro Tanaka
- Department of Chemistry Faculty of Science Nagoya University, Furo-cho, Chikusa-ku Nagoya 464-8602 Japan
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48
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Jędrzejewska H, Szumna A. Making a Right or Left Choice: Chiral Self-Sorting as a Tool for the Formation of Discrete Complex Structures. Chem Rev 2017; 117:4863-4899. [PMID: 28277655 DOI: 10.1021/acs.chemrev.6b00745] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This review discusses chiral self-sorting-the process of choosing an interaction partner with a given chirality from a complex mixture of many possible racemic partners. Chiral self-sorting (also known as chiral self-recognition or chiral self-discrimination) is fundamental for creating functional structures in nature and in the world of chemistry because interactions between molecules of the same or the opposite chirality are characterized by different interaction energies and intrinsically different resulting structures. However, due to the similarity between recognition sites of enantiomers and common conformational lability, high fidelity homochiral or heterochiral self-sorting poses a substantial challenge. Chiral self-sorting occurs among natural and synthetic molecules that leads to the amplification of discrete species. The review covers a variety of complex self-assembled structures ranging from aggregates made of natural and racemic peptides and DNA, through artificial functional receptors, macrocyles, and cages to catalytically active metal complexes and helix mimics. The examples involve a plethora of reversible interactions: electrostatic interactions, π-π stacking, hydrogen bonds, coordination bonds, and dynamic covalent bonds. A generalized view of the examples collected from different fields allows us to suggest suitable geometric models that enable a rationalization of the observed experimental preferences and establishment of the rules that can facilitate further design.
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Affiliation(s)
- Hanna Jędrzejewska
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Agnieszka Szumna
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
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49
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Chakraborty S, Kar H, Sikder A, Ghosh S. Steric ploy for alternating donor-acceptor co-assembly and cooperative supramolecular polymerization. Chem Sci 2017; 8:1040-1045. [PMID: 28451242 PMCID: PMC5356505 DOI: 10.1039/c6sc02640k] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 09/17/2016] [Indexed: 12/17/2022] Open
Abstract
The presence of a bulky peripheral wedge destabilizes the homo-assembly of an amide functionalized acceptor (A) monomer and thereby enables the formation of an alternating supramolecular copolymer with an amide appended donor (D) monomer via the synergistic effect of H-bonding and the charge-transfer (CT) interaction with a remarkably high Ka of 31 000 M-1. In sharp contrast, H-bonding driven homo-polymers of A and D are formed by just replacing the bulky chains of the A monomer with linear hydrocarbons. By taking advantage of the clear difference in the critical temperature for the onset of the AA or DD homo-assemblies and DA co-assembly (TDA ≫ TAA or TDD), the supramolecular polymerization pathway of the NDI-monomer could be fully diverted from isodesmic to cooperative in the presence of a small amount of DAN which helped the in situ production of nucleating sites involving the D-A CT-complex at a relatively higher temperature and the subsequent chain growth at TAA following the nucleation-elongation model.
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Affiliation(s)
- Saptarshi Chakraborty
- Polymer Science Unit , Indian Association for the Cultivation of Science , Kolkata , India-700032 .
| | - Haridas Kar
- Polymer Science Unit , Indian Association for the Cultivation of Science , Kolkata , India-700032 .
| | - Amrita Sikder
- Polymer Science Unit , Indian Association for the Cultivation of Science , Kolkata , India-700032 .
| | - Suhrit Ghosh
- Polymer Science Unit , Indian Association for the Cultivation of Science , Kolkata , India-700032 .
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50
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Che X, Bai B, Zhang T, Zhang C, Zhang C, Zhang P, Wang H, Li M. Gelation behaviour and gel properties of two-component organogels containing a photoresponsive gelator. NEW J CHEM 2017. [DOI: 10.1039/c7nj01215b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report the gelation behaviour and gel properties of two-component organogels consisting of 1,4-bis[(3,4-bisoctyloxyphenyl) hydrozide] phenylene (BPH-8) and a photoresponsive gelator 4-[3,5-(bisoctyloxyphenyl)]-9-anthracene formyl hydrazine (MB8).
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Affiliation(s)
- Xiangyang Che
- Key Laboratory of Automobile Materials
- Ministry of Education
- Institute of Materials Science and Engineering
- Jilin University
- Changchun 130012
| | - Binglian Bai
- Key Laboratory of Automobile Materials
- Ministry of Education
- Institute of Materials Science and Engineering
- Jilin University
- Changchun 130012
| | - Tianren Zhang
- Key Laboratory of Automobile Materials
- Ministry of Education
- Institute of Materials Science and Engineering
- Jilin University
- Changchun 130012
| | - Chunling Zhang
- Key Laboratory of Automobile Materials
- Ministry of Education
- Institute of Materials Science and Engineering
- Jilin University
- Changchun 130012
| | - Chunxue Zhang
- Key Laboratory of Automobile Materials
- Ministry of Education
- Institute of Materials Science and Engineering
- Jilin University
- Changchun 130012
| | - Peng Zhang
- Key Laboratory of Automobile Materials
- Ministry of Education
- Institute of Materials Science and Engineering
- Jilin University
- Changchun 130012
| | - Haitao Wang
- Key Laboratory of Automobile Materials
- Ministry of Education
- Institute of Materials Science and Engineering
- Jilin University
- Changchun 130012
| | - Min Li
- Key Laboratory of Automobile Materials
- Ministry of Education
- Institute of Materials Science and Engineering
- Jilin University
- Changchun 130012
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