201
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Chen Y, Lu P, Li Z, Yuan Y, Ye Q, Zhang H. Dual Stimuli-Responsive High-Efficiency Circularly Polarized Luminescence from Light-Emitting Chiral Nematic Liquid Crystals. ACS APPLIED MATERIALS & INTERFACES 2020; 12:56604-56614. [PMID: 33274914 DOI: 10.1021/acsami.0c17241] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Considerable luminescence dissymmetry factor (glum) is vital for application implementation of circularly polarized luminescence (CPL) materials. Moreover, a dual CPL switch has promising prospects in high-security encryption and sensor devices. Herein, we designed and synthesized an emissive chiral nematic liquid crystal (N*-LC) by doping a luminescent chiral additive (NO2-CS-C6-Chol) into a nematic liquid crystal (5CB). The helical assembly structure produced by inducing the formation of N*-LC endows the prepared emissive N*-LC with a larger glum value. With the increase of the doping concentration from 1 to 10 wt %, the helical pitch (P) of N*-LC gradually decreases from 25.48 to 3.92 μm. The corresponding glum value increases first, reaches the maximum value (-0.38) at 6 wt %, and then decreases slightly. Further, the prepared emissive N*-LC doped with 6 wt % NO2-CS-C6-Chol is injected into an indium-tin oxide (ITO)-coated LC cell, to which a direct current (DC) electric field is applied. The glum value can be repeatedly shuttled between the "on" and "off" state by adjusting the applied voltage. Meanwhile, owing to the inherent thermal dependence of the liquid crystal phase structure, the glum value can also be switched between the on and off state by regulating the temperature. Therefore, an electrically controlled and thermocontrolled dual CPL switching device is successfully constructed.
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Affiliation(s)
- Youde Chen
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Peng Lu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Zhiyan Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yongjie Yuan
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Qiang Ye
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Hailiang Zhang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan, China
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202
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Albano G, Aronica LA, Minotto A, Cacialli F, Di Bari L. Chiral Oligothiophenes with Remarkable Circularly Polarized Luminescence and Electroluminescence in Thin Films. Chemistry 2020; 26:16622-16627. [PMID: 32965707 DOI: 10.1002/chem.202003547] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/14/2020] [Indexed: 11/05/2022]
Abstract
This work reports the first observation of circularly polarized electroluminescence (CPEL) in thin films of self-organized oligothiophenes. Four new 1,4-phenylene and 9H-carbazole-based oligothiophenes were ad hoc designed to ensure efficient spontaneous formation of chiral supramolecular order. They were easily synthesized and their chiroptical properties in thin films were measured. Circularly polarized luminescence (CPL) spectra revealed glum in the order of 10-2 on a wide wavelengths range, originating from their self-organized chiral supramolecular organization. These molecules have reasonable properties as organic semiconductors and for this reason they can constitute the active layer of circularly-polarized organic light-emitting diodes (CP-OLEDs). Thus, we could investigate directly their electroluminescence (EL) and CPEL, without resorting to blends, but rather in a simple multilayer device with basic architecture. This is the first example of a CP-OLED with active layer made only of a small organic compound.
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Affiliation(s)
- Gianluigi Albano
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124, Pisa, Italy.,Present address: Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Edoardo Orabona 4, 70126, Bari, Italy
| | - Laura Antonella Aronica
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124, Pisa, Italy
| | - Alessandro Minotto
- Department of Physics and Astronomy and London Centre, for Nanotechnology, University College London, London, WC1E 6BT, UK
| | - Franco Cacialli
- Department of Physics and Astronomy and London Centre, for Nanotechnology, University College London, London, WC1E 6BT, UK
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124, Pisa, Italy
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203
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Chen Y, Xu Z, Hu W, Li X, Cheng Y, Quan Y. Strong-Induced CPL Emission Promoted from Achiral Conjugated Polymer-Containing Emissive Nematic Liquid Crystals (P-N*-LCs). Macromol Rapid Commun 2020; 42:e2000548. [PMID: 33244815 DOI: 10.1002/marc.202000548] [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: 09/19/2020] [Revised: 10/16/2020] [Indexed: 01/24/2023]
Abstract
With the rapid development on 3D printing technology, more and more works have been devoted to 3D display. 3D display will really come true by using circularly polarized luminescence (CPL)-active materials with both high quantum yield and dissymmetry factor (gem ) in organic light-emitting diode or liquid crystals (LCs). But so far most of these CPL materials cannot meet the real application requirement because of the low gem values in the range of 10-5 -10-2 . In this paper, ternary chiral emissive LCs (P-N*-LCs) is designed by doping chiral binaphthyl-based enantiomers as chiral dopant (Guest 1) and achiral conjugated polymer as induced CPL emitter (Guest 2) into nematic liquid crystal (N-LCs) Host 5CB. Both Guest 1 and Guest 2 show excellent compatibility with Host 5CB. The obtained ternary P-N*-LCs can emit strong-induced CPL signal with gem up to 1.12 and ФFL up to 66.1%. This work first develops a new strategy for the smart design of excellent CPL materials from versatile achiral conjugation fluorescence polymers.
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Affiliation(s)
- Yihan Chen
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zhaoran Xu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Wenrui Hu
- Key Lab of Mesoscopic Chemistry of MOE and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Xiaojing Li
- Key Lab of Mesoscopic Chemistry of MOE and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Yixiang Cheng
- Key Lab of Mesoscopic Chemistry of MOE and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Yiwu Quan
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
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204
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Development of Circularly Polarized Luminescence (CPL) Peptides Containing Pyrenylalanines and 2-Aminoisobutyric Acid. Processes (Basel) 2020. [DOI: 10.3390/pr8121550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Chiral organic and organometallic luminophores that possess circularly polarized luminescence (CPL) properties in the near-ultraviolet to near-infrared region have several useful applications. However, the CPL properties are subject to inherent factors of the compounds; to date, studies on the CPL properties influenced by amino acids and peptides are scarce. Consequently, we developed peptide-pyrene organic luminophores exhibiting various CPL properties. It is conceivable that the peptide-pyrene organic luminophores can be obtained as aggregates when dissolved in a solution. It is also possible that the formation of aggregates makes it difficult to accurately examine the CPL of the peptide in the solution. This study showed that the introduction of sterically hindered 2-aminoisobutyric acid (Aib) units into the peptide backbone inhibits aggregate formation. The resulting luminophores exhibit CPL properties owing to the presence of pyrene units. The results of this study can form a basis for the design of future materials that use peptide-pyrene organic luminophores.
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205
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Mimura Y, Motomura Y, Kitamatsu M, Imai Y. Controlling the sign of Excimer‐Origin Circularly Polarised Luminescence by Balancing Hydrophilicity/Hydrophobicity in Bipyrenyl Arginine Peptides. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yuki Mimura
- Department of Applied Chemistry Faculty of Science and Engineering Kindai University 3-4-1 Kowakae, Higashi-Osaka Osaka 577-8502 Japan
| | - Yuki Motomura
- Department of Applied Chemistry Faculty of Science and Engineering Kindai University 3-4-1 Kowakae, Higashi-Osaka Osaka 577-8502 Japan
| | - Mizuki Kitamatsu
- Department of Applied Chemistry Faculty of Science and Engineering Kindai University 3-4-1 Kowakae, Higashi-Osaka Osaka 577-8502 Japan
| | - Yoshitane Imai
- Department of Applied Chemistry Faculty of Science and Engineering Kindai University 3-4-1 Kowakae, Higashi-Osaka Osaka 577-8502 Japan
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206
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Sequentially amplified circularly polarized ultraviolet luminescence for enantioselective photopolymerization. Nat Commun 2020; 11:5659. [PMID: 33168825 PMCID: PMC7652877 DOI: 10.1038/s41467-020-19479-1] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 10/15/2020] [Indexed: 12/20/2022] Open
Abstract
Chiral optical materials based on circularly polarized luminescence (CPL) have emerged rapidly due to their feasible applications in diverse fields of research. However, limited to the small luminescence dissymmetry factor (glum), real application examples have rarely been reported. Here, we present a complex system, which show intense circularly polarized ultraviolet luminescence (CPUVL) with large glum value, enabling a chiral UV light triggered enantioselective polymerization. By integrating sensitized triplet-triplet annihilation upconversion and CPL, both visible-to-UV upconversion emission and upconverted circularly polarized ultraviolet luminescence (UC-CPUVL) were obtained in the systems, built of chiral annihilator R(S)-4,12-biphenyl[2,2]paracyclophane (R-/S-TP), and a thermally activated delayed fluorescence (TADF) sensitizer. After dispersing this upconversion system into room-temperature nematic liquid crystal, induced chiral nematic liquid crystal could significantly amplify the glum value (0.19) of UC-CPUVL. Further, the UC-CPUVL emission has been used to trigger the enantioselective photopolymerization of diacetylene. This work paves the way for the further development of functional application of CPL active materials.
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207
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Saleh N, Kundu D, Vanthuyne N, Olesiak-Banska J, Pniakowska A, Matczyszyn K, Chang VY, Muller G, Williams JAG, Srebro-Hooper M, Autschbach J, Crassous J. Dinuclear Rhenium Complexes with a Bridging Helicene-bis-bipyridine Ligand: Synthesis, Structure, and Photophysical and Chiroptical Properties. Chempluschem 2020; 85:2446-2454. [PMID: 32965092 PMCID: PMC7745256 DOI: 10.1002/cplu.202000559] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/01/2020] [Indexed: 12/19/2022]
Abstract
By attaching pyridine groups to a diaza[6]helicene, a helical, bis-ditopic, bis-N N-coordinating ligand can be accessed. Dinuclear rhenium complexes featuring this bridging ligand, of the form [{Re(CO)3 Cl}2 (N N-N N)], have been prepared and resolved to give enantiopure complexes. These complexes are phosphorescent in solution at room temperature under one- and two-photon excitation. Their experimental chiroptical properties (optical rotation, electronic circular dichroism and circularly polarized emission) have been measured. They show, for instance, emission dissymmetry factors of c.a. ±3x10-3 . Quantum-chemical calculations indicate the importance of stereochemistry on the optical activity, pointing towards further design improvements in such types of complexes.
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Affiliation(s)
- Nidal Saleh
- Univ Rennes, CNRS, ISCR - UMR 6226, 35000, Rennes, France
- Department of Organic Chemistry, University of Geneva, Geneva, Switzerland
| | - Debsouri Kundu
- Univ Rennes, CNRS, ISCR - UMR 6226, 35000, Rennes, France
| | - Nicolas Vanthuyne
- Aix Marseille University, CNRS Centrale, Marseille, iSm2, 13284, France
| | - Joanna Olesiak-Banska
- Advanced Materials Engineering and Modelling Group, Wroclaw University of Science and Technology, Wrocław, Poland
| | - Anna Pniakowska
- Advanced Materials Engineering and Modelling Group, Wroclaw University of Science and Technology, Wrocław, Poland
| | - Katarzyna Matczyszyn
- Advanced Materials Engineering and Modelling Group, Wroclaw University of Science and Technology, Wrocław, Poland
| | - Victoria Y Chang
- Department of Chemistry, San José State University, San José, CA, 95192-0101, USA
| | - Gilles Muller
- Department of Chemistry, San José State University, San José, CA, 95192-0101, USA
| | | | - Monika Srebro-Hooper
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Jochen Autschbach
- Department of Chemistry University at Buffalo, State University of New York, Buffalo, NY, 14260, USA
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208
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Abstract
Circularly polarized luminescence (CPL) has attracted significant attention in the fields of chiral photonic science and optoelectronic materials science. In a CPL-emitting system, a chiral luminophore derived from chiral molecules is usually essential. In this review, three non-classical CPL (NC-CPL) systems that do not use enantiomerically pure molecules are reported: (i) supramolecular organic luminophores composed of achiral organic molecules that can emit CPL without the use of any chiral auxiliaries, (ii) achiral or racemic luminophores that can emit magnetic CPL (MCPL) by applying an external magnetic field of 1.6 T, and (iii) circular dichroism-silent organic luminophores that can emit CPL in the photoexcited state as a cryptochiral CPL system.
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209
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Yang C, Yang D, Zhu X, Meng Y, Liu M. Circularly Polarized Luminescence of Langmuir-Schaefer Films of Amphiphilic Stilbene Enhanced via Interfacial Reaction with Cyclodextrins. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:12366-12374. [PMID: 33034456 DOI: 10.1021/acs.langmuir.0c02419] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Two enantiomeric amphiphiles containing the stilbene moiety (l-StG and d-StG) were assembled into ordered Langmuir-Schaefer (LS) films through the air/water interface and their circularly polarized luminescence (CPL) was investigated. When the molecules were spread at the air/water interface, a monolayer with nanofiber structures was formed, which could be subsequently transferred onto solid substrates by the LS method. The LS films showed both circular dichroism (CD) and CPL, whose handedness was determined by the molecular chirality of the amphiphiles. When the amphiphilic molecules were spread on the aqueous subphases containing cyclodextrins (including α-CyD, β-CyD, or γ-CyD), similar nanofiber-featured films were formed. However, the CD and CPL showed different changes. When l-StG was spread on the cyclodextrins, both CD and CPL were enhanced. When d-StG was reacted with cyclodextrins, the CD signal decreased while the CPL was enhanced. It was suggested that the chirality cooperation and conflict between the point chirality from the amphiphilic stilbene and the cavity chirality of cyclodextrin led to the phenomenon. However, in any case, the immobilization of the stilbene by the cyclodextrins caused the enhancement of CPL.
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Affiliation(s)
- Chenchen Yang
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 ZhongGuanCun BeiYiJie, 100190 Beijing, P. R. China
- University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
| | - Dong Yang
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 ZhongGuanCun BeiYiJie, 100190 Beijing, P. R. China
| | - Xuefeng Zhu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 ZhongGuanCun BeiYiJie, 100190 Beijing, P. R. China
| | - Yan Meng
- CAS Center for Excellence in Nanoscience, CAS, Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), 100190 Beijing, P. R. China
| | - Minghua Liu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 ZhongGuanCun BeiYiJie, 100190 Beijing, P. R. China
- University of Chinese Academy of Sciences, 100049 Beijing, P. R. China
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, 100190 Beijing, P. R. China
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210
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Xu X, Zhou X, Qu L, Wang L, Song J, Wu D, Zhou W, Zhou X, Xiang H, Wang J, Liu J. Reversible Chromatic Change of Supramolecular Gels for Visual and Selective Chiral Recognition of Histidine. ACS APPLIED BIO MATERIALS 2020; 3:7236-7242. [PMID: 35019382 DOI: 10.1021/acsabm.0c01063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In the present work, a chemical reaction has been performed for supramolecular gels to achieve multiple-stimuli-responsive smart soft materials. Simple chiral binaphthalene-based receptors can condense with histidine (His) to yield a Schiff base, which would help to achieve visual chiral recognition of unprotected l/d-His through gel formation along with specific selectivity toward 20 amino acids. Through intermolecular hydrogen bonds, the resultant Schiff base molecules assemble with excess His molecules to form three-dimensional (3D) networks of metastable cross-linked nanospheres and stable nanofibers in EtOH/water and MeOH/water, respectively. Significantly, this condensation reaction exhibits unique reversible and chromatic phenomena between sol-gel phase transitions in EtOH/water, which provide a way to design chemical reaction-based multivisual-change supramolecular gels for sensing and switching applications.
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Affiliation(s)
- Xuemei Xu
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Xueman Zhou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,Laboratory for Aging Research and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lang Qu
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Lei Wang
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Jintong Song
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Dehua Wu
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Weilan Zhou
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Xiangge Zhou
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Haifeng Xiang
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Jun Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Jin Liu
- Laboratory for Aging Research and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
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211
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Fu K, Jin X, Zhou M, Ma K, Duan P, Yu ZQ. Amplifying the excited state chirality through self-assembly and subsequent enhancement via plasmonic silver nanowires. NANOSCALE 2020; 12:19760-19767. [PMID: 32966503 DOI: 10.1039/d0nr04510a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The development of circularly polarized luminescent materials with a large luminescence dissymmetry factor (glum) is continuing to be a big challenge. Here, we present a general approach for amplifying circular polarization of circularly polarized luminescence (CPL) through intergrating molecular self-assembly and surface plasmon resonance (SPR). Molecular self-assembly could amplify the CPL performance. Subsequently, the composites built of nanoassemblies and achiral silver nanowires (AgNWs) show intense CPL activity with an amplified glum value. By applying an external magnetic field, the CPL activity of the nanoassemblies/AgNWs composites has been significantly enhanced, confirming a plasmon-enhanced circular polarization. Our design strategy based on SPR-enhanced circular polarization of the chiral emissive systems suggests that combining plasmonic nanomaterials with chiral organic materials could aid in the development of novel CPL active nanomaterials.
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Affiliation(s)
- Kuo Fu
- College of Chemistry and Environmental Engineering, Low dimensional Materials, Genome Initiative Shenzhen University, 1066 Xueyuan Avenue, Nanshan, Shenzhen, 518055, P.R. China. and CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing 100190, P. R. China.
| | - Xue Jin
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing 100190, P. R. China.
| | - Minghao Zhou
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing 100190, P. R. China.
| | - Kai Ma
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing 100190, P. R. China.
| | - Pengfei Duan
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing 100190, P. R. China.
| | - Zhen-Qiang Yu
- College of Chemistry and Environmental Engineering, Low dimensional Materials, Genome Initiative Shenzhen University, 1066 Xueyuan Avenue, Nanshan, Shenzhen, 518055, P.R. China.
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212
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Maeda C, Nomoto S, Takaishi K, Ema T. Aggregation-Induced Circularly Polarized Luminescence from Boron Complexes with a Carbazolyl Schiff Base. Chemistry 2020; 26:13016-13021. [PMID: 32297393 DOI: 10.1002/chem.202001463] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Indexed: 12/21/2022]
Abstract
A variety of carbazolyl-appended Schiff bases were readily synthesized from 1-formylcarbazoles and aniline derivatives. Boron complexation of the resulting ligands allowed for facile preparation of new carbazole-based BODIPY analogues showing solid-state fluorescence. Furthermore, some dyes were converted into chiral compounds through the Et2 AlCl-mediated incorporation of a binaphthyl unit. The chiral dyes showed aggregation-induced fluorescence and circularly polarized luminescence (CPL) with the ΦF and glum of up to 0.22 and -3.5×10-3 , respectively, in the solid state. The solid-state fluorescence and CPL were well characterized by the crystal packing analyses and DFT calculations.
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Affiliation(s)
- Chihiro Maeda
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Shuichi Nomoto
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Kazuto Takaishi
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Tadashi Ema
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
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213
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Liu Y, Xu Q, Sun J, Wang L, He D, Wang M, Yang C. Insights for vibronic effects on spectral shapes of electronic circular dichroism and circularly polarized luminescence of aza[7]helicene. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 239:118475. [PMID: 32470807 DOI: 10.1016/j.saa.2020.118475] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 05/09/2020] [Accepted: 05/10/2020] [Indexed: 06/11/2023]
Abstract
We present a systematic study of vibrationally resolved absorption (ABS), electronic circular dichroism (ECD), emission (EMI), and circularly polarized luminescence (CPL) of aza[7]helicene. Because of the rare experience of theoretical CPL calculation, a variety of harmonic models have been employed to compute the vibronic structures. To fully understand the vibronic effects on the spectral shapes, Franck-Condon (FC) and Herzberg-Teller (HT) contributions, Duschinsky mixings and temperature effect have all been taken into consideration. The performance of different alternative approximate methods has been carefully compared and discussed in detail. The results show that Vertical Hessian (VH) model has a slight better performance on the spectral shapes than Adiabatic Hessian (AH), especially for CPL spectrum. The thermal excitation effect has led to a reduced resolution and a broader spectral width. The moderate HT effects on the different spectral shapes have been addressed. The dissymmetry factors have been correctly reproduced and the main vibronic features of the four different spectral shapes have been successfully captured. A good estimation of the overall spectral width, relative position and relative height of different spectral bands has been presented. The nice agreement with the experiment allows us to present a detailed interpretation of the spectral shapes.
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Affiliation(s)
- Yanli Liu
- School of Physics and Optoelectronics Engineering, Ludong University, 264025 Yantai, Shandong, PR China
| | - Qiushuang Xu
- School of Physics and Optoelectronics Engineering, Ludong University, 264025 Yantai, Shandong, PR China; School of Physics Engineering, Qufu Normal University, 2673100 Qufu, Shandong, PR China
| | - Jie Sun
- School of Electronic and Information Engineering (Department of Physics), Qilu University of Technology (Shandong Academy of Sciences), 250353 Jinan, Shandong, PR China
| | - Li Wang
- School of Physics and Optoelectronics Engineering, Ludong University, 264025 Yantai, Shandong, PR China.
| | - Di He
- School of Physics and Optoelectronics Engineering, Ludong University, 264025 Yantai, Shandong, PR China
| | - Meishan Wang
- School of Physics and Optoelectronics Engineering, Ludong University, 264025 Yantai, Shandong, PR China.
| | - Chuanlu Yang
- School of Physics and Optoelectronics Engineering, Ludong University, 264025 Yantai, Shandong, PR China
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214
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Sang Y, Han J, Zhao T, Duan P, Liu M. Circularly Polarized Luminescence in Nanoassemblies: Generation, Amplification, and Application. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1900110. [PMID: 31394014 DOI: 10.1002/adma.201900110] [Citation(s) in RCA: 423] [Impact Index Per Article: 105.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 05/13/2019] [Indexed: 05/22/2023]
Abstract
Currently, the development of circularly polarized luminescent (CPL) materials has drawn extensive attention due to the numerous potential applications in optical data storage, displays, backlights in 3D displays, and so on. While the fabrication of CPL-active materials generally requires chiral luminescent molecules, the introduction of the "self-assembly" concept offers a new perspective in obtaining the CPL-active materials. Following this approach, various self-assembled materials, including organic-, inorganic-, and hybrid systems can be endowed with CPL properties. Benefiting from the advantages of self-assembly, not only chiral molecules, but also achiral species, as well as inorganic nanoparticles have potential to be self-assembled into chiral nanoassemblies showing CPL activity. In addition, the dissymmetry factor, an important parameter of CPL materials, can be enhanced through various pathways of self-assembly. Here, the present status and progress of self-assembled nanomaterials with CPL activity are reviewed. An overview of the key factors in regulating chiral emission materials at the supramolecular level will largely boost their application in multidisciplinary fields.
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Affiliation(s)
- Yutao Sang
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 ZhongGuanCun BeiYiJie, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jianlei Han
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, Division of Nanophotonics, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China
| | - Tonghan Zhao
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, Division of Nanophotonics, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China
| | - Pengfei Duan
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, Division of Nanophotonics, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China
| | - Minghua Liu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 ZhongGuanCun BeiYiJie, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, Division of Nanophotonics, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China
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215
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Nitti A, Pasini D. Aggregation-Induced Circularly Polarized Luminescence: Chiral Organic Materials for Emerging Optical Technologies. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1908021. [PMID: 32173906 DOI: 10.1002/adma.201908021] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 02/05/2020] [Indexed: 05/27/2023]
Abstract
Chirality is becoming increasingly important in the design of organic materials with functional properties, when bulk anisotropy is needed. In the past decades, a plethora of chiral organic materials have been studied and developed. Nanostructures have brought substantial advancement to the realization of organic-molecule-based devices, and the possibilities for solid-state light emission are very promising in view of potential applications. Scientific approaches to the realization of chiral emissive materials are indeed growing exponentially. The chiral nanostructures discussed are related both to the way in which luminescence is generated and the way in which it is detected. As to the former, the focus will be on organic chromophores with aggregation-induced emission properties, so that emission is present, or at least largely amplified, when the molecules are in the aggregated state. As to the latter, the focus will be on the ability and a quantitative comparison of organic nanostructures capable of circularly polarized emission.
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Affiliation(s)
- Andrea Nitti
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, Pavia, 27100, Italy
| | - Dario Pasini
- Department of Chemistry and INSTM Research Unit, University of Pavia, Via Taramelli 12, Pavia, 27100, Italy
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216
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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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217
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Yang Q, Fusè M, Bloino J. Theoretical Investigation of the Circularly Polarized Luminescence of a Chiral Boron Dipyrromethene (BODIPY) Dye. Front Chem 2020; 8:801. [PMID: 33102435 PMCID: PMC7522172 DOI: 10.3389/fchem.2020.00801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 07/30/2020] [Indexed: 01/11/2023] Open
Abstract
Over the last decade, molecules capable of emitting circularly polarized light have attracted growing attention for potential technological and biological applications. The efficiency of such devices depend on multiple parameters, in particular the magnitude and wavelength of the peak of emitted light, and also on the dissymmetry factor for chiral applications. In light of these considerations, molecular systems with tunable optical properties, preferably in the visible spectral region, are particularly appealing. This is the case of boron dipyrromethene (BODIPY) dyes, which exhibit large molecular absorption coefficients, have high fluorescence yields, are very stable, both thermally and photochemically, and can be easily functionalized. The latter property has been extensively exploited in the literature to produce chromophores with a wide range of optical properties. Nevertheless, only a few chiral BODIPYs have been synthetized and investigated so far. Using a recently reported axially chiral BODIPY derivative where an axially chiral BINOL unit has been attached to the chromophore unit, we present a comprehensive computational protocol to predict and interpret the one-photon absorption and emission spectra, together with their chiroptical counterparts. From the physico-chemical properties of this molecule, it will be possible to understand the origin of the circularly polarized luminescence better, thus helping to fine-tune the properties of interest. The sensitivity of such processes require accurate results, which can be achieved through a proper account of the vibrational structure in optical spectra. Methodologies to compute vibrationally-resolved electronic spectra can now be applied on relatively large chromophores, such as BODIPYs, but require more extensive computational protocols. For this reason, particular attention is paid in the description of the different steps of the protocol, and the potential pitfalls. Finally, we show how, by means of appropriate tools and approaches, data from intermediate steps of the simulation of the final spectra can be used to obtain further insights into the properties of the molecular system under investigation and the origin of the visible bands.
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Affiliation(s)
- Qin Yang
- Scuola Normale Superiore, Pisa, Italy
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218
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Albano G, Pescitelli G, Di Bari L. Chiroptical Properties in Thin Films of π-Conjugated Systems. Chem Rev 2020; 120:10145-10243. [PMID: 32892619 DOI: 10.1021/acs.chemrev.0c00195] [Citation(s) in RCA: 246] [Impact Index Per Article: 61.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chiral π-conjugated molecules provide new materials with outstanding features for current and perspective applications, especially in the field of optoelectronic devices. In thin films, processes such as charge conduction, light absorption, and emission are governed not only by the structure of the individual molecules but also by their supramolecular structures and intermolecular interactions to a large extent. Electronic circular dichroism, ECD, and its emission counterpart, circularly polarized luminescence, CPL, provide tools for studying aggregated states and the key properties to be sought for designing innovative devices. In this review, we shall present a comprehensive coverage of chiroptical properties measured on thin films of organic π-conjugated molecules. In the first part, we shall discuss some general concepts of ECD, CPL, and other chiroptical spectroscopies, with a focus on their applications to thin film samples. In the following, we will overview the existing literature on chiral π-conjugated systems whose thin films have been characterized by ECD and/or CPL, as well other chiroptical spectroscopies. Special emphasis will be put on systems with large dissymmetry factors (gabs and glum) and on the application of ECD and CPL to derive structural information on aggregated states.
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Affiliation(s)
- Gianluigi Albano
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
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219
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Zinna F, Albano G, Taddeucci A, Colli T, Aronica LA, Pescitelli G, Di Bari L. Emergent Nonreciprocal Circularly Polarized Emission from an Organic Thin Film. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002575. [PMID: 32734682 DOI: 10.1002/adma.202002575] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/30/2020] [Indexed: 06/11/2023]
Abstract
Controlling circularly polarized (CP) emission is key for both fundamental understanding and applications in the field of chiral photonics and electronics. Here, a completely new way to achieve this goal is presented. A luminescent thin film, made from a chiral conjugated phenylene bis-thiophenylpropynone able to self-assemble into ordered structures, emits highly circularly polarized light with opposite handedness from its two opposite faces. Such emergent nonreciprocal behavior in CP emission, so far unprecedented, represents a fundamental advance, opening new opportunities in design, preparation, and applications of CP emitting materials.
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Affiliation(s)
- Francesco Zinna
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
- CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Lungarno Pacinotti 43, Pisa, 56126, Italy
| | - Gianluigi Albano
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
| | - Andrea Taddeucci
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
| | - Tony Colli
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
| | - Laura Antonella Aronica
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
- CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Lungarno Pacinotti 43, Pisa, 56126, Italy
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
- CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Lungarno Pacinotti 43, Pisa, 56126, Italy
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Indistriale, Università Di Pisa, via Moruzzi 13, Pisa, 56124, Italy
- CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa, Lungarno Pacinotti 43, Pisa, 56126, Italy
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220
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Takaishi K. Synthesis of Circularly Polarized Luminescence Dyes Based on Chiral Naphthalene Oligomers. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.846] [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)
- Kazuto Takaishi
- Department of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University
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221
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Doistau B, Jiménez JR, Piguet C. Beyond Chiral Organic (p-Block) Chromophores for Circularly Polarized Luminescence: The Success of d-Block and f-Block Chiral Complexes. Front Chem 2020; 8:555. [PMID: 32850617 PMCID: PMC7399180 DOI: 10.3389/fchem.2020.00555] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/29/2020] [Indexed: 12/16/2022] Open
Abstract
Chiral molecules are essential for the development of advanced technological applications in spintronic and photonic. The best systems should produce large circularly polarized luminescence (CPL) as estimated by their dissymmetry factor (g lum), which can reach the maximum values of -2 ≤ g lum ≤ 2 when either pure right- or left-handed polarized light is emitted after standard excitation. For matching this requirement, theoretical considerations indicate that optical transitions with large magnetic and weak electric transition dipole moments represent the holy grail of CPL. Because of their detrimental strong and allowed electric dipole transitions, popular chiral emissive organic molecules display generally moderate dissymmetry factors (10-5 ≤ g lum ≤ 10-3). However, recent efforts in this field show that g lum can be significantly enhanced when the chiral organic activators are part of chiral supramolecular assemblies or of liquid crystalline materials. At the other extreme, chiral EuIII- and SmIII-based complexes, which possess intra-shell parity-forbidden electric but allowed magnetic dipole transitions, have yielded the largest dissymmetry factor reported so far with g lum ~ 1.38. Consequently, 4f-based metal complexes with strong CPL are currently the best candidates for potential technological applications. They however suffer from the need for highly pure samples and from considerable production costs. In this context, chiral earth-abundant and cheap d-block metal complexes benefit from a renewed interest according that their CPL signal can be optimized despite the larger covalency displayed by d-block cations compared with 4f-block analogs. This essay thus aims at providing a minimum overview of the theoretical aspects rationalizing circularly polarized luminescence and their exploitation for the design of chiral emissive metal complexes with strong CPL. Beyond the corroboration that f-f transitions are ideal candidates for generating large dissymmetry factors, a special attention is focused on the recent attempts to use chiral CrIII-based complexes that reach values of g lum up to 0.2. This could pave the way for replacing high-cost rare earths with cheap transition metals for CPL applications.
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Affiliation(s)
- Benjamin Doistau
- Department of Inorganic and Analytical Chemistry, University of Geneva, Geneva, Switzerland
| | - Juan-Ramón Jiménez
- Department of Inorganic and Analytical Chemistry, University of Geneva, Geneva, Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva, Geneva, Switzerland
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222
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Krishnadas KR, Sementa L, Medves M, Fortunelli A, Stener M, Fürstenberg A, Longhi G, Bürgi T. Chiral Functionalization of an Atomically Precise Noble Metal Cluster: Insights into the Origin of Chirality and Photoluminescence. ACS NANO 2020; 14:9687-9700. [PMID: 32672935 DOI: 10.1021/acsnano.0c01183] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We probe the origin of photoluminescence of an atomically precise noble metal cluster, Ag24Au1(DMBT)18 (DMBT = 2,4-dimethylbenzenethiolate), and the origin of chirality in its chirally functionalized derivatives, Ag24Au1(R/S-BINAS)x(DMBT)18-2x, with x = 1-7 (R/S-BINAS = R/S-1,1'-[binaphthalene]-2,2'-dithiol), using chiroptical spectroscopic measurements and density functional theory (DFT) calculations. Combination of chiroptical and luminescence spectroscopies to understand the nature of electronic transitions has not been applied to such molecule-like metal clusters. In order to impart chirality to the achiral Ag24Au1(DMBT)18 cluster, the chiral ligand, R/S-BINAS, was incorporated into it. A series of clusters, Ag24Au1(R/S-BINAS)x(DMBT)18-2x, with x = 1-7, were synthesized. We demonstrate that the low-energy electronic transitions undergo an unexpected achiral to chiral and back to achiral transition from pure Ag24Au1(DMBT)18 to Ag24Au1(R/S-BINAS)x(DMBT)18-2x, by increasing the number of BINAS ligands. The UV/vis, luminescence, circular dichroism, and circularly polarized luminescence spectroscopic measurements, in conjunction with DFT calculations, suggest that the photoluminescence in Ag24Au1(DMBT)18 and its chirally functionalized derivatives originates from the transitions involving the whole Ag24Au1S18 framework and not merely from the icosahedral Ag12Au1 core. These results suggest that the chiroptical signatures and photoluminescence in these cluster systems cannot be solely attributed to any one of the structural components, that is, the metal core or the protecting metal-ligand oligomeric units, but rather to their interaction and that the ligand shell plays a crucial role. Our work demonstrates that chiroptical spectroscopic techniques such as circular dichroism and circularly polarized luminescence represent useful tools to understand the nature of electronic transitions in ligand-protected metal clusters and that this approach can be utilized for gaining deeper insights into the structure-property relationships of the electronic transitions of such molecule-like clusters.
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Affiliation(s)
| | - Luca Sementa
- CNR-ICCOM & IPCF, Consiglio Nazionale delle Ricerche, Via Giuseppe Moruzzi 1, 56124 Pisa, Italy
| | - Marco Medves
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Trieste, Via Giorgieri 1, 34127 Trieste, Italy
| | - Alessandro Fortunelli
- CNR-ICCOM & IPCF, Consiglio Nazionale delle Ricerche, Via Giuseppe Moruzzi 1, 56124 Pisa, Italy
| | - Mauro Stener
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Trieste, Via Giorgieri 1, 34127 Trieste, Italy
| | - Alexandre Fürstenberg
- Département de Chimie Analytique et Minérale, Université de Genève 30 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
| | - Giovanna Longhi
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Thomas Bürgi
- Département de Chimie Physique, Université de Genève, 30 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
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223
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Kato K, Osuka A. Propeller-Shaped Semi-fused Porphyrin Trimers: Molecular-Symmetry-Dependent Chiroptical Response. Chemistry 2020; 26:10217-10221. [PMID: 32459376 DOI: 10.1002/chem.202002157] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/26/2020] [Indexed: 11/09/2022]
Abstract
Triple helicene-like semi-fused trimeric NiII porphyrins were constructed by alkyne trimerization of an ethynyl-substituted porphyrin and subsequent three-fold Grignard addition to the formyl groups and acid-catalyzed intramolecular cyclization. The presence of stereogenic sp3 carbons in the central bridge leads to small inter-porphyrin conjugative interactions as was revealed by electrochemical and optical properties. Two diastereomers with stable chiral conformations were optically resolved, and the separated enantiomers displayed considerably intense circular dichroism. Importantly, the chiroptical response of C3 -symmetric helical isomer (|Δϵ|=830 m-1 cm-1 ) is 1.8 times amplified from that of C1 -symmetric one (|Δϵ|=470 m-1 cm-1 ). The observed amplification has been interpreted in terms of different spatial arrangements of the three porphyrins.
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Affiliation(s)
- Kenichi Kato
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku Kyoto, 606-8502, Japan
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224
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Fujiki M, Wang L, Ogata N, Asanoma F, Okubo A, Okazaki S, Kamite H, Jalilah AJ. Chirogenesis and Pfeiffer Effect in Optically Inactive Eu III and Tb III Tris(β-diketonate) Upon Intermolecular Chirality Transfer From Poly- and Monosaccharide Alkyl Esters and α-Pinene: Emerging Circularly Polarized Luminescence (CPL) and Circular Dichroism (CD). Front Chem 2020; 8:685. [PMID: 32903703 PMCID: PMC7438854 DOI: 10.3389/fchem.2020.00685] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 06/30/2020] [Indexed: 11/30/2022] Open
Abstract
We report emerging circularly polarized luminescence (CPL) at 4f-4f transitions when lanthanide (EuIII and TbIII) tris(β-diketonate) embedded to cellulose triacetate (CTA), cellulose acetate butyrate (CABu), D-/L-glucose pentamethyl esters (D-/L-Glu), and D-/L-arabinose tetramethyl esters (D-/L-Ara) are in film states. Herein, 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionate (fod) and 2,2,6,6-tetramethyl-3,5-heptanedione (dpm) were chosen as the β-diketonates. The glum value of Eu(fod)3 in CABu are +0.0671 at 593 nm (5D0→7F1) and −0.0059 at 613 nm (5D0→7F2), respectively, while those in CTA are +0.0463 and −0.0040 at these transitions, respectively. The glum value of Tb(fod)3 in CABu are −0.0029 at 490 nm (5D4→7F6), +0.0078 at 540 nm (5D4→7F5), and −0.0018 at 552 nm (5D4→7F5), respectively, while those in CTA are −0.0053, +0.0037, and −0.0059 at these transitions, respectively. D-/L-Glu and D-/L-Ara induced weaker glum values at 4f-4f transitions of Eu(fod)3, Tb(fod)3, and Tb(dpm)3. For comparison, Tb(dpm)3 in α-pinene showed clear CPL characteristics, though Eu(dpm)3 did not. A surplus charge neutralization hypothesis was applied to the origin of attractive intermolecular interactions between the ligands and saccharides. This idea was supported from the concomitant opposite tendency in upfield 19F-NMR and downfield 1H-NMR chemical shifts of Eu(fod)3 and the opposite Mulliken charges between F-C bonds (fod) and H-C bonds (CTA and D-/L-Glu). An analysis of CPL excitation (CPLE) and CPL spectra suggests that (+)- and (–)-sign CPL signals of EuIII and TbIII at different 4f-4f transitions in the visible region are the same with the (+)-and (–)-sign exhibited by CPLE bands at high energy levels of EuIII and TbIII in the near-UV region.
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Affiliation(s)
- Michiya Fujiki
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Laibing Wang
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Nanami Ogata
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Fumio Asanoma
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Asuka Okubo
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Shun Okazaki
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Hiroki Kamite
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Abd Jalil Jalilah
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan.,School of Materials Engineering, Universiti Malaysia Perlis, Jejawi, Malaysia.,Centre of Excellence Frontier Materials Research, Universiti Malaysia Perlis, Kangar, Malaysia
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225
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Orientation Control of Helical Nanofilament Phase and Its Chiroptical Applications. CRYSTALS 2020. [DOI: 10.3390/cryst10080675] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Chiral liquid crystal phases show fascinating structural and optical properties due to their inherent helical characteristics. Among the various chiral liquid crystal phases, the helical nanofilament phase, made of achiral bent-shaped molecules, has been of keen research interest due to its unusual polar and chiral properties. This review is intended to introduce the recent progress in orientation control and its application to the helical nanofilament phase, which includes topographic confinement, photoalignment, and chiroptical applications such as photonic crystal and chirality sensor.
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226
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Zeng M, Ren A, Wu W, Zhao Y, Zhan C, Yao J. Lanthanide MOFs for inducing molecular chirality of achiral stilbazolium with strong circularly polarized luminescence and efficient energy transfer for color tuning. Chem Sci 2020; 11:9154-9161. [PMID: 34123164 PMCID: PMC8163402 DOI: 10.1039/d0sc02856h] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We present herein an innovative host–guest method to achieve induced molecular chirality from an achiral stilbazolium dye (DSM). The host–guest system is exquisitely designed by encapsulating the dye molecule in the molecule-sized chiral channel of homochiral lanthanide metal–organic frameworks (P-(+)/M-(−)-TbBTC), in which the P- or M-configuration of the dye is unidirectionally generated via a spatial confinement effect of the MOF and solidified by the dangling water molecules in the channel. Induced chirality of DSM is characterized by solid-state circularly polarized luminescence (CPL) and micro-area polarized emission of DSM@TbTBC, both excited with 514 nm light. A luminescence dissymmetry factor of 10−3 is obtained and the photoluminescence quantum yield (PLQY) of the encapsulated DSM in DSM@TbTBC is ∼10%, which is close to the PLQY value of DSM in dilute dichloromethane. Color-tuning from green to red is achieved, owing to efficient energy transfer (up to 56%) from Ln3+ to the dye. Therefore, this study for the first time exhibits an elegant host–guest system that shows induced strong CPL emission and enables efficient energy transfer from the host chiral Ln-MOF to the achiral guest DSM with the emission color tuned from green to red. Homochiral Ln-MOFs are synthesized to encapsulate achiral dyes to induce strong circularly polarized luminescence with a luminescence dissymmetry factor of 10−3.![]()
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Affiliation(s)
- Min Zeng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China .,University of Chinese Academy of Sciences Beijing 100049 China
| | - Ang Ren
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China .,University of Chinese Academy of Sciences Beijing 100049 China
| | - Wubin Wu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China .,University of Chinese Academy of Sciences Beijing 100049 China
| | - Yongsheng Zhao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China .,University of Chinese Academy of Sciences Beijing 100049 China
| | - Chuanlang Zhan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China .,Key Laboratory of Excitonic Materials Chemistry and Devices (EMC&D), College of Chemistry and Environmental Science, Inner Mongolia Normal University Huhehot 010022 China.,University of Chinese Academy of Sciences Beijing 100049 China
| | - Jiannian Yao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China .,University of Chinese Academy of Sciences Beijing 100049 China
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227
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Li S, Yan Z, Li X, Kong Y, Li H, Gao G, Zheng Y, Zang S. Stepwise Achievement of Circularly Polarized Luminescence on Atomically Precise Silver Clusters. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2000738. [PMID: 32775159 PMCID: PMC7404152 DOI: 10.1002/advs.202000738] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/19/2020] [Indexed: 05/15/2023]
Abstract
The weakly coordinated anionic nitrate ligands in a centrosymmetric Ag20 cluster are replaced in a stepwise manner by chiral amino acids and two achiral luminescent sulfonic-group-containing ligands while nearly maintaining the original silver(I) cage structure. This surface engineering enables the atomically precise Ag20 clusters to exhibit the high-efficiency synergetic effects of chirality and fluorescence, producing rare circularly polarized luminescence among the metal clusters with a large dissymmetry factor of (|glum|) ≈ 5 × 10-3. This rational approach using joint functional ligands further opens a new avenue to diverse multifunctional metal clusters for promising applications.
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Affiliation(s)
- Si Li
- Green Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou450001China
| | - Zhi‐Ping Yan
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China
| | - Xin‐Lei Li
- Green Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou450001China
| | - Yu‐Jin Kong
- Green Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou450001China
| | - Hai‐Yang Li
- Green Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou450001China
| | - Guang‐Gang Gao
- School of Materials Science and EngineeringUniversity of JinanJinan250022China
| | - You‐Xuan Zheng
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China
| | - Shuang‐Quan Zang
- Green Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou450001China
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228
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Li Q, Yuan J, Liang H, Zheng F, Lu X, Yu C, Lu Q. Spiranthes sinensis-Inspired Circular Polarized Luminescence in a Solid Block Copolymer Film with a Controllable Helix. ACS NANO 2020; 14:8939-8948. [PMID: 32551549 DOI: 10.1021/acsnano.0c03734] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Chiral materials with circular polarized luminescence (CPL) have attracted much interest because of their extensive optical information and remarkable sensitivity. Inspired by the helical template in Spiranthes sinensis, we propose here a general and flexible method for fabricating solid CPL materials using a block copolymer-formed helix as a template. A chiral arrangement of various nonchiral fluorescent molecules was obtained in the block copolymer-based hybrid film. An excimer chiralty rule was found for the CPL emission of nonchiral fluorescent molecules: a right-handed helix induced left-handed CPL emission and a left-handed helix induced right-handed CPL emission. A dissipative particle dynamics simulation showed that such an antihelical effect is related to the length between the adjacent interacting points of nonchiral fluorescent molecules along the helical structure. Furthermore, the fluorescent films had a high dissymmetric factor for CPL emission, and thus, the films provide a general and flexible platform for designing and preparing advanced functional chiroptical materials.
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Affiliation(s)
- Qingxiang Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical & Thermal Aging, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Jianan Yuan
- School of Chemical Science and Engineering, Tongji University, Shanghai, 201920, People's Republic of China
| | - Hongyu Liang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical & Thermal Aging, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Feng Zheng
- School of Chemical Science and Engineering, Tongji University, Shanghai, 201920, People's Republic of China
| | - Xuemin Lu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical & Thermal Aging, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Chunyang Yu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical & Thermal Aging, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Qinghua Lu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical & Thermal Aging, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
- School of Chemical Science and Engineering, Tongji University, Shanghai, 201920, People's Republic of China
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229
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Zhao T, Han J, Duan P, Liu M. New Perspectives to Trigger and Modulate Circularly Polarized Luminescence of Complex and Aggregated Systems: Energy Transfer, Photon Upconversion, Charge Transfer, and Organic Radical. Acc Chem Res 2020; 53:1279-1292. [PMID: 32649172 DOI: 10.1021/acs.accounts.0c00112] [Citation(s) in RCA: 149] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Chiral functional materials with circularly polarized luminescence (CPL) have risen rapidly in recent years because of their fascinating characteristics and potential applications in various research fields. CPL refers to the differential spontaneous emission of left (L)- and right (R)-handed circularly polarized light upon photon or electron excitation. Generally, an outstanding CPL-active material needs to possess a high luminescence dissymmetry factor (glum) (defined as 2(IL - IR)/(IL + IR) where I is the emission intensity), which is between -2 and +2. Although the exciting development in CPL-active materials was achieved, the modulation of CPL signs is still a challenge. For small organic systems, a relatively small glum value, one of the key parameters of CPL, limits their practical applications. Searching for efficient approaches for amplifying glum is important. Therefore, over the past decades, besides optimizing the structure of small molecules, many other strategies to obtain efficient CPL-active materials have been developed. For instance, self-assembly has been well demonstrated as an effective approach to amplify the supramolecular chirality as well as the glum values. On the other hand, chiral liquid crystals (CLCs), which are capable of selective reflection of left- and right-handed circularly polarized light, also to serve as a host matrix for endowing guest emitters with CPL activity and high glum values. However, self-assembly focuses on modulating the conformation and spatial arrangement of chiral emitters. And the CPL of a luminophore-doped CLC matrix depends on the helix pitch and band gap positions. Lately, novel photophysical approaches to modulate CPL signs have gradually emerged.In this Account, we discuss the recent progress of excited-state-regulation involved CPL-active materials. The emergence, amplification, and inversion of CPL can be adjusted through regulation of the excited state of chiral emitters. For example, Förster resonance energy transfer (FRET) can amplify the glum values of chiral energy acceptors in chiral supramolecular assemblies. By combining the concepts of photon upconversion and CPL, high-energy upconverted circularly polarized emission was achieved under excitation of low-energy light, accompanied by an amplified glum. In addition, the organic systems with unpaired electrons, i.e., charge transfer (CT) system and open-shell π-radical, show favorable CPL properties, which can be flexibly tuned with an applied magnetic field. It should be noted that these photophysical process are associated with the excited state of chiral emitters. So far, while the main focus is on the regulation of the molecular and supramolecular nanostructures, direct regulation of the excited state of the chiral system will serve as a new platform to understand and regulate the CPL activity and will be helpful to develop smart chiroptical materials.
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Affiliation(s)
- Tonghan Zhao
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No.11, ZhongGuanCun BeiYiTiao, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jianlei Han
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No.11, ZhongGuanCun BeiYiTiao, Beijing 100190, P.R. China
| | - Pengfei Duan
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No.11, ZhongGuanCun BeiYiTiao, Beijing 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Minghua Liu
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No.11, ZhongGuanCun BeiYiTiao, Beijing 100190, P.R. China
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No.2, ZhongGuanCun BeiYiJie, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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230
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Zhao J, Xing P. Helical Nanostructures with Circularly Polarized Luminescence from the Multicomponent Assembly of π-Conjugated N-terminal Amino Acids. Chempluschem 2020; 85:1511-1522. [PMID: 32644303 DOI: 10.1002/cplu.202000397] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/22/2020] [Indexed: 11/06/2022]
Abstract
Self-assembled structures with circularly polarized luminescence (CPL) have attracted great attention in recent years. π-conjugated N-terminal amino acids with chiral amino acid residues and luminophores are capable of forming self-assembled structures at hierarchical levels, whereby chirality can be transferred to the macroscopic scale with easily modulated CPL properties. Due to the presence of multiple noncovalent binding sites, including hydrogen bonding and aromatic interactions, π-conjugated N-terminal amino acids are emerging core candidates for incorporation into multicomponent self-assembled architectures, accomplishing rational control over supramolecular chirality as well as showing rich chiroptical properties. In this Minireview, we provide a brief summary of multiple-component coassembled systems comprising π-conjugated N-terminal amino acids, small organic species and metal ions. The synthesis of helical structures and manipulation of supramolecular chirality by controlling the self-assembled species is introduced, and the CPL properties of multiple-component π-conjugated N-terminal amino acids are also briefly summarized.
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Affiliation(s)
- Jianjian Zhao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Pengyao Xing
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
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231
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Kumar R, Aggarwal H, Srivastava A. Of Twists and Curves: Electronics, Photophysics, and Upcoming Applications of Non-Planar Conjugated Organic Molecules. Chemistry 2020; 26:10653-10675. [PMID: 32118325 DOI: 10.1002/chem.201905071] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/02/2020] [Indexed: 01/02/2023]
Abstract
Non-planar conjugated organic molecules (NPCOMs) contain π-conjugation across their length and also exhibit asymmetry in their conformation. In other words, certain molecular fragments in NPCOMs are either twisted or curved out of planarity. This conformational asymmetry in NPCOMs leads to non-uniform charge-distribution across the molecule, with important photophysical and electronic consequences such as altered thermodynamic stability, chemical reactivity, as well as materials properties. Majorly, NPCOMs can be classified as having either Fused or Rotatable architectures. NPCOMs have been the focus of significant scientific attention in the recent past due to their exciting photophysical behavior that includes intramolecular charge-transfer (ICT), thermally activated delayed fluorescence (TADF) and long-lived charge-separated states. In addition, they also have many useful materials characteristics such as biradical character, semi-conductivity, dynamic conformations, and mechanochromism. As a result, rational design of NPCOMs and mapping their structure-property correlations has become imperative. Researchers have executed conformational changes in NPCOMs through a variety of external stimuli such as pH, temperature, anions-cations, solvent, electric potential, and mechanical force in order to tailor their photophysical, optoelectronic and magnetic properties. Converging to these points, this review highlights the lucrative electronic features, photophysical traits and upcoming applications of NPCOMs by a selective survey of the recent scientific literature.
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Affiliation(s)
- Rajesh Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhauri, Bhopal Bypass Road, Bhopal, 462066, India
| | - Himanshu Aggarwal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhauri, Bhopal Bypass Road, Bhopal, 462066, India
| | - Aasheesh Srivastava
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhauri, Bhopal Bypass Road, Bhopal, 462066, India
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232
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Nagata Y, Mori T. Irreverent Nature of Dissymmetry Factor and Quantum Yield in Circularly Polarized Luminescence of Small Organic Molecules. Front Chem 2020; 8:448. [PMID: 32582634 PMCID: PMC7296150 DOI: 10.3389/fchem.2020.00448] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 04/28/2020] [Indexed: 01/14/2023] Open
Abstract
Recently, a rational modification of small organic molecules has attracted considerable attention for designing advanced materials with enhanced circularly polarized luminescence (CPL) activity. A particular emphasis has been placed on fully allowed π-π* transition of rigid aromatic systems, due to their relatively superior emission properties or quantum yields of luminescence (Φlum). However, their dissymmetry factors (glum), differential left and right CPL intensities, are typically disappointingly low at least in one to two orders of magnitude. Truly useful organic CPL materials, rated by a circular polarization luminosity index (ΛCPL) per single molecule, possess both |glum| and Φlum values high. However, how to improve these two factors simultaneously with a proper molecular design is an open question. Here, we addressed this issue by theoretical and statistical inspection on a possible relation of the glum and Φlum values. According to the analysis, we propose simple, unpretentious, yet pertinent guidelines for designing superior organic CPL materials for the future with large ΛCPL values.
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Affiliation(s)
- Yuya Nagata
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, Japan
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233
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Shang W, Zhu X, Liang T, Du C, Hu L, Li T, Liu M. Chiral Reticular Self‐Assembly of Achiral AIEgen into Optically Pure Metal–Organic Frameworks (MOFs) with Dual Mechano‐Switchable Circularly Polarized Luminescence. Angew Chem Int Ed Engl 2020; 59:12811-12816. [DOI: 10.1002/anie.202005703] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Indexed: 12/27/2022]
Affiliation(s)
- Weili Shang
- Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences (CAS) ZhongGuanCun North First Street 2 Beijing 100190 China
- College of Chemistry and Molecular Engineering Zhengzhou University Kexuedadao 100 Zhengzhou 450001 China
| | - Xuefeng Zhu
- Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences (CAS) ZhongGuanCun North First Street 2 Beijing 100190 China
| | | | - Cong Du
- Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences (CAS) ZhongGuanCun North First Street 2 Beijing 100190 China
| | - Liangyu Hu
- Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences (CAS) ZhongGuanCun North First Street 2 Beijing 100190 China
| | - Tiesheng Li
- College of Chemistry and Molecular Engineering Zhengzhou University Kexuedadao 100 Zhengzhou 450001 China
| | - Minghua Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences (CAS) ZhongGuanCun North First Street 2 Beijing 100190 China
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234
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Shang W, Zhu X, Liang T, Du C, Hu L, Li T, Liu M. Chiral Reticular Self‐Assembly of Achiral AIEgen into Optically Pure Metal–Organic Frameworks (MOFs) with Dual Mechano‐Switchable Circularly Polarized Luminescence. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005703] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Weili Shang
- Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences (CAS) ZhongGuanCun North First Street 2 Beijing 100190 China
- College of Chemistry and Molecular Engineering Zhengzhou University Kexuedadao 100 Zhengzhou 450001 China
| | - Xuefeng Zhu
- Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences (CAS) ZhongGuanCun North First Street 2 Beijing 100190 China
| | | | - Cong Du
- Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences (CAS) ZhongGuanCun North First Street 2 Beijing 100190 China
| | - Liangyu Hu
- Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences (CAS) ZhongGuanCun North First Street 2 Beijing 100190 China
| | - Tiesheng Li
- College of Chemistry and Molecular Engineering Zhengzhou University Kexuedadao 100 Zhengzhou 450001 China
| | - Minghua Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Colloid Interface and Chemical Thermodynamics Institute of Chemistry Chinese Academy of Sciences (CAS) ZhongGuanCun North First Street 2 Beijing 100190 China
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235
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Luo XF, Han HB, Yan ZP, Wu ZG, Su J, Zou JW, Zhu ZQ, Zheng YX, Zuo JL. Multicolor Circularly Polarized Photoluminescence and Electroluminescence with 1,2-Diaminecyclohexane Enantiomers. ACS APPLIED MATERIALS & INTERFACES 2020; 12:23172-23180. [PMID: 32326696 DOI: 10.1021/acsami.0c02400] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Development of simple chiral materials with tunable circularly polarized photoluminescence (CPPL) and circularly polarized electroluminescence (CPEL) for efficient circularly polarized organic light-emitting diodes (CP-OLEDs) is the key toward future 3D displays. In this study, four pairs of chiral 1,2-diaminocyclohexane-based fluorescence enantiomers were efficiently prepared with high yields (up to 92%) and enantiomeric excesses (ee >99%). By the introduction of N-methyl, carbazole, and diphenylamine-donating groups, these materials showed multicolor CPPL and CPEL from blue (420 nm) to red (610 nm) with good thermal and conformational stability. The multilayer CP-OLEDs based on these enantiomers show high external quantum efficiency of up to 5.5% with low-efficiency roll-off and microimage circularly polarized electroluminescence with a dissymmetry factor (gEL) of up to -1.4 × 10-3/+1.3 × 10-3. These results push forward the development of future multicolor circularly polarized electroluminescent materials.
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Affiliation(s)
- Xu-Feng Luo
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Hua-Bo Han
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, P. R. China
| | - Zhi-Ping Yan
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Zheng-Guang Wu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Jian Su
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Jian-Wei Zou
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Zi-Qi Zhu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - You-Xuan Zheng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
| | - Jing-Lin Zuo
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
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236
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Chen J, Yin X, Wang B, Zhang K, Meng G, Zhang S, Shi Y, Wang N, Wang S, Chen P. Planar Chiral Organoboranes with Thermoresponsive Emission and Circularly Polarized Luminescence: Integration of Pillar[5]arenes with Boron Chemistry. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001145] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jin‐Fa Chen
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Xiaodong Yin
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Bowen Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Kai Zhang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Guoyun Meng
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Songhe Zhang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Yafei Shi
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Nan Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Suning Wang
- Department of Chemistry Queen's University Kingston Ontario K7L 3N6 Canada
| | - Pangkuan Chen
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
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237
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Reine P, Ortuño AM, Mariz IFA, Ribagorda M, Cuerva JM, Campaña AG, Maçôas E, Miguel D. Simple Perylene Diimide Cyclohexane Derivative With Combined CPL and TPA Properties. Front Chem 2020; 8:306. [PMID: 32373591 PMCID: PMC7186504 DOI: 10.3389/fchem.2020.00306] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 03/27/2020] [Indexed: 01/17/2023] Open
Abstract
In this work we describe the linear and non-linear (chiro)optical properties of an enantiopure bis-perylenediimide (PDI) cyclohexane derivative. This compound exhibits upconversion based on a two-photon absorption (TPA) process with a cross-section value of 70 GM together with emission of circularly polarized luminescence (CPL), showing a glum in the range of 10-3. This simple structure represents one of the scarce examples of purely organic compounds combining both TPA and CPL responses, together with large values of molar absorptivity and fluorescence quantum yield with emission in the 500-600 nm. Self-assembly induced by introduction of a poor solvent allows for a spectacular shift of the emission into the near-infrared (NIR, 650-750 nm) by formation of well-defined rotationally displaced dimers. Therefore, we are here presenting a versatile platform whose optical properties can be simply tuned by self-assembly or by functionalization of the electron-deficient aromatic core of PDIs.
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Affiliation(s)
- Pablo Reine
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Ana M Ortuño
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Inês F A Mariz
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Maria Ribagorda
- Departamento de Química Orgánica, Facultad de Ciencias, C.U. Cantoblanco, Universidad Autónoma de Madrid, Madrid, Spain
| | - Juan M Cuerva
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Araceli G Campaña
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Emerlinda Maçôas
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Delia Miguel
- Departamento de Fisicoquímica, Facultad de Farmacia, UEQ, Universidad de Granada, Granada, Spain
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238
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Chen J, Yin X, Wang B, Zhang K, Meng G, Zhang S, Shi Y, Wang N, Wang S, Chen P. Planar Chiral Organoboranes with Thermoresponsive Emission and Circularly Polarized Luminescence: Integration of Pillar[5]arenes with Boron Chemistry. Angew Chem Int Ed Engl 2020; 59:11267-11272. [PMID: 32220121 DOI: 10.1002/anie.202001145] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/27/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Jin‐Fa Chen
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Xiaodong Yin
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Bowen Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Kai Zhang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Guoyun Meng
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Songhe Zhang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Yafei Shi
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Nan Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
| | - Suning Wang
- Department of Chemistry Queen's University Kingston Ontario K7L 3N6 Canada
| | - Pangkuan Chen
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster Science of the Ministry of Education School of Chemistry and Chemical Engineering Beijing Institute of Technology of China Beijing 102488 China
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239
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Liu Z, Jiang Y, Jiang J, Zhai D, Wang D, Liu M. Self-assembly of isomeric naphthalene appended glucono derivatives: nanofibers and nanotwists with circularly polarized luminescence emission. SOFT MATTER 2020; 16:4115-4120. [PMID: 32195501 DOI: 10.1039/c9sm02542a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Two isomeric naphthalene appended glucono derivatives substituted at the 1 or 2-naphthyl positions (Nap-1 and Nap-2) were designed and their self-assembly behaviors and optical properties were investigated. Nap-1 and Nap-2 were found to self-assemble into nanofibers and nanotwists, respectively. While the molecular chirality of the glucono moiety could not be effectively transferred to the naphthalene moiety in the Nap-1 system, this was achieved in the Nap-2 assembly. Thus, the Nap-2 assembly showed obvious circular dichroism (CD) and circularly polarized luminescence (CPL) signals. From the XRD patterns and IR spectra of the supramolecular assemblies, it was found that Nap-2 packed in a more orderly fashion than Nap-1, leading to a hierarchical assembly forming nanotwist structures. Moreover, a light-harvesting system based on Nap-2 supramolecular gels and dyes was established, in which an efficient energy transfer was demonstrated from Nap-2 to an acceptor Eosin Y. It was further found that both chirality and energy transfer enhanced the dissymmetry factor of Eosin Y CPL emission.
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Affiliation(s)
- Zongwen Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, P. R. China.
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240
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Haino T, Hirao T. Supramolecular Polymerization and Functions of Isoxazole Ring Monomers. CHEM LETT 2020. [DOI: 10.1246/cl.200031] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Takeharu Haino
- Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Takehiro Hirao
- Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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241
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Dee C, Zinna F, Kreidt E, Arrico L, Rodríguez-Rodríguez A, Platas-Iglesias C, Di Bari L, Seitz M. Circularly polarized luminescence of enantiopure carboline-based europium cryptates under visible light excitation. J RARE EARTH 2020. [DOI: 10.1016/j.jre.2020.01.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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242
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Dhbaibi K, Shen C, Jean M, Vanthuyne N, Roisnel T, Górecki M, Jamoussi B, Favereau L, Crassous J. Chiral Diketopyrrolopyrrole-Helicene Polymer With Efficient Red Circularly Polarized Luminescence. Front Chem 2020; 8:237. [PMID: 32328479 PMCID: PMC7160364 DOI: 10.3389/fchem.2020.00237] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Accepted: 03/12/2020] [Indexed: 12/22/2022] Open
Abstract
Chiral diketopyrrolopyrrole (DPP)-helicene polymers were synthesized to develop efficient red circularly polarized (CP) light emitters. These original chiral dyes display intense electronic circular dichroism (ECD) and CP luminescence (CPL) in the far-red spectral region owing to the presence of excitonic coupling between achiral DPPs within the chiral environment of the polymeric structure. This work affords an interesting example illustrating the potential of π-conjugated helical polymers for chiral optoelectronic applications.
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Affiliation(s)
- Kais Dhbaibi
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes, ISCR-UMR 6226, Rennes, France.,Faculty of Science of Gabès, University of Gabès, Gabes, Tunisia
| | - Chengshuo Shen
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes, ISCR-UMR 6226, Rennes, France.,State Key Lab of Metal Matrix Composites, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Marion Jean
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Nicolas Vanthuyne
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Thierry Roisnel
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes, ISCR-UMR 6226, Rennes, France
| | - Marcin Górecki
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Pisa, Italy.,Institute of Organic Chemistry, Polish Academy of Sciences, Warsaw, Poland
| | - Bassem Jamoussi
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ludovic Favereau
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes, ISCR-UMR 6226, Rennes, France
| | - Jeanne Crassous
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes, ISCR-UMR 6226, Rennes, France
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243
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Ray C, Schad C, Moreno F, Maroto BL, Bañuelos J, Arbeloa T, García-Moreno I, Villafuerte C, Muller G, de la Moya S. BCl 3-Activated Synthesis of COO-BODIPY Laser Dyes: General Scope and High Yields under Mild Conditions. J Org Chem 2020; 85:4594-4601. [PMID: 32138513 DOI: 10.1021/acs.joc.9b03059] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A general and straightforward method for the synthesis of COO-BODIPYs from F-BODIPYs and carboxylic acids is established. The method is based on the use of boron trichloride to activate the involved substitution of fluorine, which leads to high yields through rapid reactions under soft conditions. This mild method opens the way to unprecedented laser dyes with outstanding efficiencies and photostabilities, which are difficult to obtain by the current methods.
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Affiliation(s)
- César Ray
- Departamento de Quı́mica Orgánica, Facultad de Ciencias Quı́micas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain
| | - Christopher Schad
- Departamento de Quı́mica Orgánica, Facultad de Ciencias Quı́micas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain
| | - Florencio Moreno
- Departamento de Quı́mica Orgánica, Facultad de Ciencias Quı́micas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain
| | - Beatriz L Maroto
- Departamento de Quı́mica Orgánica, Facultad de Ciencias Quı́micas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain
| | - Jorge Bañuelos
- Departamento de Quı́mica Fı́sica, Facultad de Ciencia y Tecnologı́a, Universidad del Paı́s Vasco-EHU, 48080 Bilbao, Spain
| | - Teresa Arbeloa
- Departamento de Quı́mica Fı́sica, Facultad de Ciencia y Tecnologı́a, Universidad del Paı́s Vasco-EHU, 48080 Bilbao, Spain
| | - Inmaculada García-Moreno
- Departamento de Sistemas de Baja Dimensionalidad, Superficies y Materia Condensada, Instituto de Quı́mica-Fı́sica Rocasolano, Centro Superior de Investigaciones Cientı́ficas (CSIC), Serrano 119, 28006 Madrid, Spain
| | - Cassie Villafuerte
- Department of Chemistry, San José State University, One Washington Square, 95192-0101 San José, California, United States
| | - Gilles Muller
- Department of Chemistry, San José State University, One Washington Square, 95192-0101 San José, California, United States
| | - Santiago de la Moya
- Departamento de Quı́mica Orgánica, Facultad de Ciencias Quı́micas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain
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244
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Abstract
We report on the generation of a super- and homochiral field where linearly polarized incident light is twisted by plasmonic dimeric nanostructure within the gap. The asymmetry in exciting a molecule's chiral polarizability is enhanced, resulting in discriminatory nanocolorimetry. A chromaticity shift is used to discriminate the handedness of chiral molecules which is sensitive, faster, and self-referenced, and requires only a single scan as compared to existing methods.
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Affiliation(s)
- Po-Wen Tang
- Department of Optics and Photonics, National Central University, 300, Jhongda Road, Jhongli, Taoyuan 32001, Taiwan
| | - Chao-Yi Tai
- Department of Optics and Photonics, National Central University, 300, Jhongda Road, Jhongli, Taoyuan 32001, Taiwan
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245
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Maeda C, Nagahata K, Shirakawa T, Ema T. Azahelicene‐Fused BODIPY Analogues Showing Circularly Polarized Luminescence. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001186] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Chihiro Maeda
- Division of Applied Chemistry Graduate School of Natural Science and Technology Okayama University Tsushima Okayama 700-8530 Japan
| | - Keiji Nagahata
- Division of Applied Chemistry Graduate School of Natural Science and Technology Okayama University Tsushima Okayama 700-8530 Japan
| | - Takuma Shirakawa
- Division of Applied Chemistry Graduate School of Natural Science and Technology Okayama University Tsushima Okayama 700-8530 Japan
| | - Tadashi Ema
- Division of Applied Chemistry Graduate School of Natural Science and Technology Okayama University Tsushima Okayama 700-8530 Japan
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246
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Maeda C, Nagahata K, Shirakawa T, Ema T. Azahelicene-Fused BODIPY Analogues Showing Circularly Polarized Luminescence. Angew Chem Int Ed Engl 2020; 59:7813-7817. [PMID: 32107825 DOI: 10.1002/anie.202001186] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 02/18/2020] [Indexed: 12/23/2022]
Abstract
Helical carbazole-based BODIPY analogues were readily synthesized via aza[7]helicenes. The structures of azahelicene-incorporated BF2 dyes were elucidated by x-ray diffraction analysis. DFT calculations revealed that the π-conjugated system expanded from the helicene moiety to the BODIPY framework. The azahelicene-fused boron complexes showed the Cotton effects and the circularly polarized luminescence (CPL) in the visible region. Furthermore, an axially chiral binaphthyl group was attached to the helically chiral dyes, which enhanced the chiroptical properties.
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Affiliation(s)
- Chihiro Maeda
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Keiji Nagahata
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Takuma Shirakawa
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Tadashi Ema
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
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247
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Tani K, Imafuku R, Miyanaga K, Masaki ME, Kato H, Hori K, Kubono K, Taneda M, Harada T, Goto K, Tani F, Mori T. Combined Experimental and Theoretical Studies on Planar Chirality of Partially Overlapped C2-Symmetric [3.3](3,9)Dicarbazolophanes. J Phys Chem A 2020; 124:2057-2063. [DOI: 10.1021/acs.jpca.0c00286] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keita Tani
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Risa Imafuku
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Kanae Miyanaga
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Miyuki Eiraku Masaki
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Haruka Kato
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Kazushige Hori
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Koji Kubono
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Masatsugu Taneda
- Division of Natural Science, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582, Japan
| | - Takunori Harada
- Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University, Dannoharu 700, Oita City 870-1192, Japan
| | - Kenta Goto
- Institute for Materials Chemistry and Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Fumito Tani
- Institute for Materials Chemistry and Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan
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248
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Maeda C, Suka K, Nagahata K, Takaishi K, Ema T. Synthesis and Chiroptical Properties of Chiral Carbazole-Based BODIPYs. Chemistry 2020; 26:4261-4268. [PMID: 31793681 DOI: 10.1002/chem.201904954] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/02/2019] [Indexed: 12/22/2022]
Abstract
A series of carbazole-based boron dipyrromethenes (BODIPYs) 2 a-g bearing binaphthyl units have been synthesized by the Et2 AlCl-mediated reaction of the corresponding BODIPY difluorides 1 a-g with 1,1'-binaphthalene-2,2'-diol. Substituents such as halogen, nitrile, and amino groups were tolerated under the reaction conditions, and the reaction of the phenylethynyl-substituted 1 h gave (R,R)-3 h bearing two binaphthyl units. The chiroptical properties of these dyes with different substituents were investigated by UV/Vis, CD, fluorescence, and circularly polarized luminescence (CPL) spectroscopy. The CD spectra showed Cotton effects in the absorption region of the BODIPY moieties. In addition, they showed CPL both in solution and in the solid state. Interestingly, several dyes recorded higher glum values in the solid state, probably due to intermolecular interactions. Because (R,R)-3 h recorded relatively low glum values, the diastereomer (R,S)-3 h was prepared. The (R,S) diastereomer showed intense CPL, which suggests a synergetic effect of the two binaphthyl groups. Finally, chiral carbazole-based BODIPY dimers have been synthesized for the first time and their chiroptical properties were investigated. They showed redshifted fluorescence and CPL, which reached the near-IR (NIR) region in the solid state.
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Affiliation(s)
- Chihiro Maeda
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Keita Suka
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Keiji Nagahata
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Kazuto Takaishi
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
| | - Tadashi Ema
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama, 700-8530, Japan
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249
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Keshri SK, Takai A, Ishizuka T, Kojima T, Takeuchi M. Conformational Dynamics of Monomer- versus Dimer-like Features in a Naphthalenediimide-Based Conjugated Cyclophane. Angew Chem Int Ed Engl 2020; 59:5254-5258. [PMID: 31854072 DOI: 10.1002/anie.201914414] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Indexed: 11/07/2022]
Abstract
The design and synthesis of an enantiomeric pair of 1,8-diethynylanthracene-bridged naphthalenediimide (NDI)-based cyclophanes (Cyclo-NDIs) are reported. Each enantiomer of Cyclo-NDI exhibits a circularly polarized luminescence signal with a relatively large luminescence dissymmetry factor (glum =±8×10-3 ). We have further investigated the modulation of through-space electronic communication between co-facially oriented NDIs in a discrete Cyclo-NDI with changes in the temperature. Tuning of the electronic communication results from the conformational transformation of monomer- versus dimer-like features of Cyclo-NDI, as confirmed by UV/Vis, fluorescence, circular dichroic, and NMR spectroscopic analysis. The temperature-dependent optical response in the Cyclo-NDI through the conformational transformation could be utilized as a highly sensitive and reversible optical thermometer in a wide temperature range (100 to -80 °C).
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Affiliation(s)
- Sudhir Kumar Keshri
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Atsuro Takai
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Tomoya Ishizuka
- Department of Chemistry, Graduate School of Pure & Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Takahiko Kojima
- Department of Chemistry, Graduate School of Pure & Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Masayuki Takeuchi
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
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250
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Ikai T, Okubo M, Wada Y. Helical Assemblies of One-Dimensional Supramolecular Polymers Composed of Helical Macromolecules: Generation of Circularly Polarized Light Using an Infinitesimal Chiral Source. J Am Chem Soc 2020; 142:3254-3261. [PMID: 31983202 DOI: 10.1021/jacs.9b13584] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We report the synthesis of one-dimensional supramolecular polymers composed of one-handed helical macromolecules bearing fluorescent pendant groups and the generation of circularly polarized light on the basis of hierarchical chiral amplification starting from a tiny amount of chiral substituent. Copolymerization of benzo[1,2-b:4,5-b']dithiophene-appended achiral/chiral isocyanides (99:1, mol/mol) with a solid-state photoluminescence feature afforded submicrometer supramolecular fibers, in which almost perfect single-handed helical polyisocyanides were noncovalently connected end to end. The resulting helical supramolecular polymers were further helically assembled to form a cholesteric liquid crystal film with an intense circularly polarized luminescence (CPL) signal. Surprisingly, the supramolecular system containing only 0.01 mol % of the chiral monomer unit also emitted the observable circularly polarized light owing to multiple chiral amplification from an infinitesimal point chirality to helical chirality and then to supramolecular chirality. Furthermore, chiral information was efficiently transferred from the helically assembled supramolecular system containing 1 mol % of the chiral unit to achiral dye molecules blended in the film, allowing full-color tunable induced CPL with luminescence dissymmetry factors greater than 1.0 × 10-2. This unprecedentedly strong chiral amplification enables the creation of helical supramolecular polymers and chirally assembled systems with various chiral functions based solely on an infinitesimal chiral source.
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Affiliation(s)
- Tomoyuki Ikai
- Graduate School of Natural Science and Technology , Kanazawa University , Kakuma-machi, Kanazawa 920-1192 , Japan.,Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering , Nagoya University , Chikusa-ku, Nagoya 464-8603 , Japan
| | - Mitsuhiro Okubo
- Graduate School of Natural Science and Technology , Kanazawa University , Kakuma-machi, Kanazawa 920-1192 , Japan
| | - Yuya Wada
- Graduate School of Natural Science and Technology , Kanazawa University , Kakuma-machi, Kanazawa 920-1192 , Japan
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