101
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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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102
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Jadhav RG, Kumar A, Kumar S, Maiti S, Mukherjee S, Das AK. Benzoselenadiazole-Based Conjugated Molecules: Active Switching Layers with Nanofibrous Morphology for Nonvolatile Organic Resistive Memory Devices. Chempluschem 2020; 85:910-920. [PMID: 32401425 DOI: 10.1002/cplu.202000229] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/24/2020] [Indexed: 01/14/2023]
Abstract
In this work, two symmetrical donor-acceptor-donor (D-A-D) type benzoselenadiazole (BSeD)-based π-conjugated molecules were synthesized and employed as an active switching layer for non-volatile data storage applications. BSeD-based derivatives with different donor units attached through common vinylene linkers showed different electrical and optical properties. 4,7-Di((E)-styryl)benzo[c][2,1,3]selenadiazole (DSBSeD) and 4,7-bis((E)-4-methoxystyryl)benzo[c][2,1,3]selenadiazole (DMBSeD) are sandwiched between gallium-doped ZnO (GZO) and metal aluminum electrodes respectively through solution-processed spin-coating method. The solution-processed nanofibrous switching layer containing the DMBSeD-based memory device showed reliable memory characteristics in terms of write and erase operations with low SET voltage than the random-aggregated DSBSeD-based device. The nanofibrous molecular morphology of switching layer overcomes the interfacial hole transport energy barrier at the interface of the DMBSeD thin-film and the bottom GZO electrode. The memory device GZO/DMBSeD/Al based on nanofibrous switching layers shows switching characteristics at compliance current of 10 mA with Vset =0.79 V and Vreset =-0.55 V. This work will be beneficial for the rational design of advanced next-generation organic memory devices by controlling the nanostructured morphology of active organic switching layer for enhanced charge-transfer phenomenon.
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Affiliation(s)
- Rohit G Jadhav
- Department of Chemistry, Indian Institute of Technology Indore, Indore, 453552, India
| | - Amitesh Kumar
- Hybrid Nanodevice Research Group (HNRG), Electrical Engineering, Indian Institute of Technology Indore, Madhya Pradesh, 453552, India
| | - Sanjay Kumar
- Hybrid Nanodevice Research Group (HNRG), Electrical Engineering, Indian Institute of Technology Indore, Madhya Pradesh, 453552, India
| | - Sayan Maiti
- Department of Chemistry, Indian Institute of Technology Indore, Indore, 453552, India
| | - Shaibal Mukherjee
- Hybrid Nanodevice Research Group (HNRG), Electrical Engineering, Indian Institute of Technology Indore, Madhya Pradesh, 453552, India
| | - Apurba K Das
- Department of Chemistry, Indian Institute of Technology Indore, Indore, 453552, India
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103
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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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104
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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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105
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Zhao B, Yu H, Pan K, Tan Z, Deng J. Multifarious Chiral Nanoarchitectures Serving as Handed-Selective Fluorescence Filters for Generating Full-Color Circularly Polarized Luminescence. ACS NANO 2020; 14:3208-3218. [PMID: 32022541 DOI: 10.1021/acsnano.9b08618] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A series of full-color circularly polarized luminescence (CPL)-active materials are fabricated by judiciously combining multifarious chiral nanoarchitectures with achiral fluorescence dyes. The investigated nanoarchitectures include organic polymer nanofibers, organic-inorganic hybrid nanoflowers, and inorganic nanoflowers. The as-prepared chiral nanoarchitectures all can act as handed-selective fluorescence filters to powerfully transform unpolarized fluorescent light into circularly polarized luminescence. Also notable, no interaction is required between chiral and fluorescent components for achieving CPL emission. The present study provides a convenient and universal approach for preparing full-color CPL materials. Following the strategy, numerous chiroptical materials with CPL performance can be expected due to the abundant chiral matters and achiral fluorophores.
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Affiliation(s)
- Biao Zhao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Huli Yu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Kai Pan
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhan'ao Tan
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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106
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Zinna F, Pescitelli G, Di Bari L. Circularly polarized light at the mirror: Caveats and opportunities. Chirality 2020; 32:765-769. [PMID: 32162387 DOI: 10.1002/chir.23217] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 02/22/2020] [Accepted: 02/25/2020] [Indexed: 11/06/2022]
Abstract
Moving from the simple concept that reflection onto a mirror surface changes the handedness of circularly polarized light, we describe what happens to the emergent polarization in two different cases after reflection on a back mirror. In the first case, a regular emitter is taken into account, where reflection has the effect to destroy the emergent polarization. In the second case, we show what could happen when a hypothetical apparently non-reciprocal emitting material undergoes a similar experiment. These simple concepts have important implications in the design of efficient circularly polarized emitting devices.
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Affiliation(s)
- Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Pisa, Italy
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Pisa, Italy
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Pisa, Italy
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107
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Zablocki J, Arteaga O, Balzer F, Hertel D, Holstein JJ, Clever G, Anhäuser J, Puttreddy R, Rissanen K, Meerholz K, Lützen A, Schiek M. Polymorphic chiral squaraine crystallites in textured thin films. Chirality 2020; 32:619-631. [PMID: 32155676 DOI: 10.1002/chir.23213] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/20/2020] [Accepted: 02/20/2020] [Indexed: 01/13/2023]
Abstract
An enantiomerically pure (R)-2-methylpyrrolidine-based anilino squaraine crystallizes in two chiral polymorphs adopting a monoclinic C2 and an orthorhombic P21 21 21 structure, respectively. By various thin-film preparation techniques, a control of the polymorph formation is targeted. The local texture of the resulting textured thin films is connected to the corresponding optical properties. Special attention is paid to an unusual Davydov splitting, the anisotropic chiroptical response arising from preferred out-of-plane orientation of the crystallites, and the impact of the polymorph specific excitonic coupling.
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Affiliation(s)
- Jennifer Zablocki
- Kekulé Institute of Organic Chemistry and Biochemistry, University of Bonn, Bonn, Germany
| | - Oriol Arteaga
- IN2UB, Department De Física Aplicada, Universitat de Barcelona, Barcelona, Spain
| | - Frank Balzer
- Mads Clausen Institute, University of Southern Denmark, Sonderborg, Denmark
| | - Dirk Hertel
- Department of Physical Chemistry, University of Cologne, Cologne, Germany
| | - Julian J Holstein
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany
| | - Guido Clever
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany
| | - Jana Anhäuser
- Kekulé Institute of Organic Chemistry and Biochemistry, University of Bonn, Bonn, Germany
| | - Rakesh Puttreddy
- Department of Chemistry, University of Jyvaskyla, Jyväskylä, Finland
| | - Kari Rissanen
- Department of Chemistry, University of Jyvaskyla, Jyväskylä, Finland
| | - Klaus Meerholz
- Department of Physical Chemistry, University of Cologne, Cologne, Germany
| | - Arne Lützen
- Kekulé Institute of Organic Chemistry and Biochemistry, University of Bonn, Bonn, Germany
| | - Manuela Schiek
- Department of Physical Chemistry, University of Cologne, Cologne, Germany.,University of Oldenburg Institute of Physics, Oldenburg, Germany
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108
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Castriciano MA, Trapani M, Romeo A, Depalo N, Rizzi F, Fanizza E, Patanè S, Monsù Scolaro L. Influence of Magnetic Micelles on Assembly and Deposition of Porphyrin J-Aggregates. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E187. [PMID: 31973230 PMCID: PMC7074871 DOI: 10.3390/nano10020187] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 12/13/2022]
Abstract
Clusters of superparamagnetic iron oxide nanoparticles (SPIONs) have been incorporated into the hydrophobic core of polyethylene glycol (PEG)-modified phospholipid micelles. Two different PEG-phospholipids have been selected to guarantee water solubility and provide an external corona, bearing neutral (SPIONs@PEG-micelles) or positively charged amino groups (SPIONs@NH2-PEG-micelles). Under acidic conditions and with specific mixing protocols (porphyrin first, PF, or porphyrin last, PL), the water-soluble 5,10,15,20-tetrakis-(4-sulfonatophenyl)-porphyrin (TPPS) forms chiral J-aggregates, and in the presence of the two different types of magnetic micelles, an increase of the aggregation rates has been generally observed. In the case of the neutral SPIONs@PEG-micelles, PL protocol affords a stable nanosystem, whereas PF protocol is effective with the charged SPIONs@NH2-PEG-micelles. In both cases, chiral J-aggregates embedded into the magnetic micelles (TPPS@SPIONs@micelles) have been characterized in solution through UV/vis absorption and circular/linear dichroism. An external magnetic field allows depositing films of the TPPS@SPIONs@micelles that retain their chiroptical properties and exhibit a high degree of alignment, which is also confirmed by atomic force microscopy.
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Affiliation(s)
- Maria Angela Castriciano
- CNR-ISMN, Istituto per lo Studio dei Materiali Nanostrutturati c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina V.le F. Stagno D’Alcontres, 31 98166 Messina, Italy; (M.T.); (A.R.)
| | - Mariachiara Trapani
- CNR-ISMN, Istituto per lo Studio dei Materiali Nanostrutturati c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina V.le F. Stagno D’Alcontres, 31 98166 Messina, Italy; (M.T.); (A.R.)
| | - Andrea Romeo
- CNR-ISMN, Istituto per lo Studio dei Materiali Nanostrutturati c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina V.le F. Stagno D’Alcontres, 31 98166 Messina, Italy; (M.T.); (A.R.)
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali and C.I.R.C.M.S.B., University of Messina V.le F. Stagno D’Alcontres, 31 98166 Messina, Italy
| | - Nicoletta Depalo
- CNR-IPCF, Istituto Per i Processi Chimico-Fisici, 70124 Bari, Italy; (N.D.); (F.R.); (E.F.)
| | - Federica Rizzi
- CNR-IPCF, Istituto Per i Processi Chimico-Fisici, 70124 Bari, Italy; (N.D.); (F.R.); (E.F.)
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy
| | - Elisabetta Fanizza
- CNR-IPCF, Istituto Per i Processi Chimico-Fisici, 70124 Bari, Italy; (N.D.); (F.R.); (E.F.)
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy
| | - Salvatore Patanè
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, University of Messina V.le F. Stagno D’Alcontres, 31 98166 Messina, Italy;
| | - Luigi Monsù Scolaro
- CNR-ISMN, Istituto per lo Studio dei Materiali Nanostrutturati c/o Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali, University of Messina V.le F. Stagno D’Alcontres, 31 98166 Messina, Italy; (M.T.); (A.R.)
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali and C.I.R.C.M.S.B., University of Messina V.le F. Stagno D’Alcontres, 31 98166 Messina, Italy
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109
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Zhang DW, Li M, Chen CF. Recent advances in circularly polarized electroluminescence based on organic light-emitting diodes. Chem Soc Rev 2020; 49:1331-1343. [DOI: 10.1039/c9cs00680j] [Citation(s) in RCA: 329] [Impact Index Per Article: 82.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This review summarizes the recent advances in CP-OLEDs based on chiral conjugated polymers, chiral metal complexes, and chiral simple organic molecules.
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Affiliation(s)
- Da-Wei Zhang
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Meng Li
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Chuan-Feng Chen
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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110
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Sharma A, Campbell A, Leoni J, Cheng YT, Müllner M, Lakhwani G. Circular Intensity Differential Scattering Reveals the Internal Structure of Polymer Fibrils. J Phys Chem Lett 2019; 10:7547-7553. [PMID: 31736314 DOI: 10.1021/acs.jpclett.9b02993] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The optical and electronic properties of π-conjugated polymers in organic electronic devices depend on their intra- and interchain interactions, dictated by the internal arrangement of the polymer chains in an amorphous or semicrystalline aggregated state. Here, we discuss the utility of circular intensity differential scattering (CIDS) of circularly polarized light as a sensitive probe to identify the internal arrangement of the polymer chains in helical polymer aggregates. We advance existing theoretical models to utilize the CIDS response and extract structural properties such as the size, orientation, and periodicity of a polymer aggregate. As an example, we analyze the CIDS signatures of helically assembled fibrillar aggregates of a chiral polymer poly[(9,9-di-n-octylfluorenyl-2,7-diyl)-alt-(benzothiadiazole)] (PFBT) in solution and reveal that PFBT fibrils incorporate at least five intertwined polymer chains. We anticipate our approach can be extended more generally to investigate the internal arrangement of supramolecular assemblies of a wide range of fibrillar aggregates of π-conjugated polymers.
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Affiliation(s)
- Ashish Sharma
- ARC Centre of Excellence in Exciton Science, School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Alison Campbell
- ARC Centre of Excellence in Exciton Science, School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Julien Leoni
- ARC Centre of Excellence in Exciton Science, School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Yen Theng Cheng
- Key Centre for Polymers and Colloids, School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Markus Müllner
- Key Centre for Polymers and Colloids, School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Girish Lakhwani
- ARC Centre of Excellence in Exciton Science, School of Chemistry , The University of Sydney , Sydney , NSW 2006 , Australia
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111
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Tsunega S, Jin R, Nakashima T, Kawai T. Transfer of Chiral Information from Silica Hosts to Achiral Luminescent Guests: a Simple Approach to Accessing Circularly Polarized Luminescent Systems. Chempluschem 2019; 85:619-626. [DOI: 10.1002/cplu.201900615] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/29/2019] [Indexed: 01/24/2023]
Affiliation(s)
- Seiji Tsunega
- Department of Material and Life ChemistryKanagawa University 3-2-7 Rokkakubashi Yokohama 221-8686 Japan
| | - Ren‐Hua Jin
- Department of Material and Life ChemistryKanagawa University 3-2-7 Rokkakubashi Yokohama 221-8686 Japan
| | - Takuya Nakashima
- Division of Materials ScienceNara Institute of Science and Technology Ikoma, Nara 630-0192 Japan
| | - Tsuyoshi Kawai
- Division of Materials ScienceNara Institute of Science and Technology Ikoma, Nara 630-0192 Japan
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112
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David AHG, Casares R, Cuerva JM, Campaña AG, Blanco V. A [2]Rotaxane-Based Circularly Polarized Luminescence Switch. J Am Chem Soc 2019; 141:18064-18074. [PMID: 31638802 PMCID: PMC6975276 DOI: 10.1021/jacs.9b07143] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
A rotaxane-based molecular shuttle
has been synthesized in which
the switching of the position of a fluorescent macrocycle on the thread
turns “on” or “off” the circularly polarized
luminescence (CPL) of the system while maintaining similar fluorescence
profiles and quantum yields in both states. The chiroptical activity
relies on the chiral information transfer from an ammonium salt incorporating d- or l-phenylalanine residues as chiral stereogenic
covalent units to an otherwise achiral crown ether macrocycle bearing
a luminescent 2,2′-bipyrene unit when they interact through
hydrogen bonding. Each enantiomeric thread induces CPL responses of
opposite signs on the macrocycle. Upon addition of base, the switching
of the position of the macrocycle to a triazolium group disables the
chiral information transfer to the macrocycle, switching “off”
the CPL response. The in situ switching upon several acid/base cycles
is also demonstrated.
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Affiliation(s)
- Arthur H G David
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ) , Universidad de Granada (UGR) , Avda. Fuente Nueva S/N , Granada 18071 , Spain
| | - Raquel Casares
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ) , Universidad de Granada (UGR) , Avda. Fuente Nueva S/N , Granada 18071 , 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 (UGR) , Avda. Fuente Nueva S/N , Granada 18071 , 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 (UGR) , Avda. Fuente Nueva S/N , Granada 18071 , Spain
| | - Victor Blanco
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ) , Universidad de Granada (UGR) , Avda. Fuente Nueva S/N , Granada 18071 , Spain
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113
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Tian Q, Xie S. Spin Injection and Transport in Organic Materials. MICROMACHINES 2019; 10:mi10090596. [PMID: 31510018 PMCID: PMC6780273 DOI: 10.3390/mi10090596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/04/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
This review introduces some important spin phenomena of organic molecules and solids and their devices: Organic spin injection and transport, organic spin valves, organic magnetic field effects, organic excited ferromagnetism, organic spin currents, etc. We summarize the experimental and theoretical progress of organic spintronics in recent years and give prospects.
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Affiliation(s)
- Qipeng Tian
- School of Physics, Shandong University, Jinan 250100, China.
| | - Shijie Xie
- School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
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114
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Dong Y, Zhang Y, Li X, Feng Y, Zhang H, Xu J. Chiral Perovskites: Promising Materials toward Next-Generation Optoelectronics. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1902237. [PMID: 31389174 DOI: 10.1002/smll.201902237] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/20/2019] [Indexed: 05/25/2023]
Abstract
Halide perovskites have emerged as a type of extremely promising material for their diverse chemical and electronic structures along with their brilliant optoelectronic properties. The introduction of chirality into perovskite scaffolds, generating a novel concept of chiral perovskite materials, offers an immense step forward toward the development of smart optoelectronic and spintronic materials and devices. The present Review summarizes recent advances in such an emerging field regarding the design and construction of chiral perovskite materials, along with their optoelectronic performances. In addition, an outlook of future challenges as well as the potential significance of the chiral perovskite family on the optical communication is proposed.
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Affiliation(s)
- Yuze Dong
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin, 300350, P. R. China
| | - Yupeng Zhang
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Xinyue Li
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin, 300350, P. R. China
- School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tongyan Road 38, Tianjin, 300350, P. R. China
| | - Yaqing Feng
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin, 300350, P. R. China
| | - Han Zhang
- Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Jialiang Xu
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin, 300350, P. R. China
- School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tongyan Road 38, Tianjin, 300350, P. R. China
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115
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Wang Y, Zhang Y, Hu W, Quan Y, Li Y, Cheng Y. Circularly Polarized Electroluminescence of Thermally Activated Delayed Fluorescence-Active Chiral Binaphthyl-Based Luminogens. ACS APPLIED MATERIALS & INTERFACES 2019; 11:26165-26173. [PMID: 31240905 DOI: 10.1021/acsami.9b07005] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Two pairs of thermally activated delayed fluorescence (TADF)-active chiral luminogens (R/S-1 and R/S-2) can be achieved by introducing D-A-type groups to chiral BINOL skeletons. The resulting chiral luminogens can exhibit aggregation-induced emission properties in THF-water mixtures and TADF emission in a doped-film state. The absolute photoluminescence quantum yield (ΦPL) and delayed fluorescence lifetimes (τdelayed) were measured to be 18.5% and 1.03 μs for R-1 and 15.7% and 0.97 μs for R-2. However, only R/S-1 with the fixed conjugation structure can emit circularly polarized luminescence signals, and glum can reach 1.6 × 10-3 in toluene solution and 9.2 × 10-4 in the neat film. Most importantly, R/S-1 was chosen as the emitting layers for orange-red circularly polarized organic light-emitting diodes, which can display low turn-on voltage (Von) of 3.4 V, high maximum brightness (Lmax) up to 40 470 cd m-2, moderate external quantum efficiency of 4.1%, as well as circularly polarized electroluminescence signal with gEL = -0.9 × 10-3/+1.0 × 10-3.
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Affiliation(s)
| | | | | | | | - Yunzhi Li
- School of Chemistry and Chemical Engineering , Linyi University , Linyi 276000 , China
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116
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Wan L, Wade J, Salerno F, Arteaga O, Laidlaw B, Wang X, Penfold T, Fuchter MJ, Campbell AJ. Inverting the Handedness of Circularly Polarized Luminescence from Light-Emitting Polymers Using Film Thickness. ACS NANO 2019; 13:8099-8105. [PMID: 31241299 DOI: 10.1021/acsnano.9b02940] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The emission of circularly polarized light is central to many applications, including data storage, optical quantum computation, biosensing, environmental monitoring, and display technologies. An emerging method to induce (chiral) circularly polarized (CP) electroluminescence from the active layer of polymer light-emitting diodes (polymer OLEDs; PLEDs) involves blending achiral polymers with chiral small-molecule additives, where the handedness/sign of the CP light is controlled by the absolute stereochemistry of the small molecule. Through the in-depth study of such a system we report an interesting chiroptical property: the ability to tune the sign of CP light as a function of active layer thickness for a fixed enantiomer of the chiral additive. We demonstrate that it is possible to achieve both efficient (4.0 cd/A) and bright (8000 cd/m2) CP-PLEDs, with high dissymmetry of emission of both left-handed (LH) and right-handed (RH) light, depending on thickness (thin films, 110 nm: gEL = 0.51, thick films, 160 nm: gEL = -1.05, with the terms "thick" and "thin" representing the upper and lower limits of the thickness regime studied), for the same additive enantiomer. We propose that this arises due to an interplay between localized CP emission originating from molecular chirality and CP light amplification or inversion through a chiral medium. We link morphological, spectroscopic, and electronic characterization in thin films and devices with theoretical studies in an effort to determine the factors that underpin these observations. Through the control of active layer thickness and device architecture, this study provides insights into the mechanisms that result in CP luminescence and high performance from CP-PLEDs, as well as demonstrating new opportunities in CP photonic device design.
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Affiliation(s)
- Li Wan
- Department of Physics and Centre of Plastic Electronics , Imperial College London , South Kensington Campus, London SW7 2AZ , U.K
| | - Jessica Wade
- Department of Physics and Centre of Plastic Electronics , Imperial College London , South Kensington Campus, London SW7 2AZ , U.K
| | - Francesco Salerno
- Department of Chemistry and Molecular Sciences Research Hub , Imperial College London , White City Campus, Wood Lane , London W12 OBZ , U.K
| | - Oriol Arteaga
- Departament de Física Aplicada , Universitat de Barcelona , IN2UB, Barcelona , 08028 , Spain
| | - Beth Laidlaw
- Chemistry - School of Natural and Environmental Sciences , Newcastle University , Newcastle upon Tyne NE1 7RU , U.K
| | - Xuhua Wang
- Department of Physics and Centre of Plastic Electronics , Imperial College London , South Kensington Campus, London SW7 2AZ , U.K
| | - Thomas Penfold
- Chemistry - School of Natural and Environmental Sciences , Newcastle University , Newcastle upon Tyne NE1 7RU , U.K
| | - Matthew J Fuchter
- Department of Chemistry and Molecular Sciences Research Hub , Imperial College London , White City Campus, Wood Lane , London W12 OBZ , U.K
| | - Alasdair J Campbell
- Department of Physics and Centre of Plastic Electronics , Imperial College London , South Kensington Campus, London SW7 2AZ , U.K
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117
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Wu ZG, Han HB, Yan ZP, Luo XF, Wang Y, Zheng YX, Zuo JL, Pan Y. Chiral Octahydro-Binaphthol Compound-Based Thermally Activated Delayed Fluorescence Materials for Circularly Polarized Electroluminescence with Superior EQE of 32.6% and Extremely Low Efficiency Roll-Off. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1900524. [PMID: 31106503 DOI: 10.1002/adma.201900524] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 04/16/2019] [Indexed: 05/15/2023]
Abstract
Circularly polarized organic light-emitting diodes (CP-OLEDs) are particularly favorable for the direct generation of CP light, and they demonstrate a promising application in 3D display. However, up to now, such CP devices have suffered from low brightness, insufficient efficiency, and serious efficiency roll-off. In this study, a pair of octahydro-binaphthol (OBN)-based chiral emitting enantiomers, (R/S)-OBN-Cz, are developed by ingeniously merging a chiral source and a luminophore skeleton. These chirality-acceptor-donor (C-A-D)-type and rod-like compounds concurrently generate thermally activated delayed fluorescence with a small ΔEST of 0.037 eV, as well as a high photoluminescence quantum yield of 92% and intense circularly polarized photoluminescence with dissymmetry factors (|gPL |) of ≈2.0 × 10-3 in thin films. The CP-OLEDs based on (R/S)-OBN-Cz enantiomers not only display obvious circularly polarized electroluminescence signals with a |gEL | of ≈2.0 × 10-3 , but also exhibit superior efficiencies with maximum external quantum efficiency (EQEmax ) up to 32.6% and extremely low efficiency roll-off with an EQE of 30.6% at 5000 cd m-2 , which are the best performances among the reported CP devices to date.
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Affiliation(s)
- Zheng-Guang Wu
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Hua-Bo Han
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Zhi-Ping Yan
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Xu-Feng Luo
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Yi Wang
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - You-Xuan Zheng
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Jing-Lin Zuo
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Yi Pan
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
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118
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Choi S, Jeong JW, Jo G, Ma BC, Chang M. Conjugated polymer/paraffin blends for organic field-effect transistors with high environmental stability. NANOSCALE 2019; 11:10004-10016. [PMID: 31080983 DOI: 10.1039/c9nr02425e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Improving the environmental stability of conjugated polymers remains a fundamental challenge that limits their widespread adoption and commercial application in electronic and photonic devices. Although paraffin can have excellent barrier properties against moisture in ambient air, the use of conjugated polymer/paraffin blends to fabricate organic field-effect transistors (OFETs) with high environmental stability has not been attempted. Here, we demonstrate that conjugated polymer/paraffin blends can greatly enhance the environmental stability of OFETs. Compared to conventional systems such as poly(3-hexylthiophene) (P3HT)/polystyrene and P3HT/polydimethylsiloxane blends, P3HT/paraffin blends exhibit superior environmental stability after 30 days of exposure to the ambient atmosphere. Furthermore, the conjugated polymer/paraffin blends provide stable electronic properties under severe mechanical deformation [a strain (ε) of ∼150%], overcoming a critical challenge arising from the use of fragile crystalline conjugated polymer films for flexible and stretchable electronic devices. In comparison with a conventional spin-coating method, a shear-coating technique provides enhanced molecular ordering and alignment, resulting in improved charge carrier mobility in the blend film OFETs. In particular, shearing in the evaporation regime improves the molecular ordering and alignment of the blend films more than shearing in the Landau-Levich regime. Interestingly, the environmental stability of the sheared blend films varies depending on the shear speed. Specifically, OFETs based on blend films sheared at 0.5 and 6.0-10.0 mm s-1 exhibit excellent environmental stability, maintaining 80% of their initial mobility after 30 days of exposure to air. In contrast, the environmental stability of the OFETs decreases considerably when the blend films are sheared at 1.0-4.0 mm s-1; the mobility decreases to as low as ∼20% of the initial value.
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Affiliation(s)
- Solip Choi
- Department of Polymer Engineering, Graduate School, Chonnam National University, Gwangju 61186, South Korea.
| | - Jae Won Jeong
- Department of Polymer Engineering, Graduate School, Chonnam National University, Gwangju 61186, South Korea.
| | - Gyounglyul Jo
- Department of Polymer Engineering, Graduate School, Chonnam National University, Gwangju 61186, South Korea.
| | - Byung Chol Ma
- School of Chemical Engineering, Chonnam National University, Gwangju 61186, South Korea
| | - Mincheol Chang
- Department of Polymer Engineering, Graduate School, Chonnam National University, Gwangju 61186, South Korea. and School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, South Korea and Alan G. MacDiarmid Energy Research Institute, Chonnam National University, Gwangju 61186, South Korea
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119
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Yan ZP, Luo XF, Liu WQ, Wu ZG, Liang X, Liao K, Wang Y, Zheng YX, Zhou L, Zuo JL, Pan Y, Zhang H. Configurationally Stable Platinahelicene Enantiomers for Efficient Circularly Polarized Phosphorescent Organic Light-Emitting Diodes. Chemistry 2019; 25:5672-5676. [PMID: 30829426 DOI: 10.1002/chem.201900955] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Indexed: 01/01/2023]
Abstract
Chiral materials with circularly polarized luminescence (CPL) are potentially applicable for 3D displays. In this study, by decorating the pyridinyl-helicene ligands with -CF3 and -F groups, the platinahelicene enantiomers featured superior configurational stability, as well as high sublimation yield (>90 %) and clear CPPL properties, with dissymmetry factors (|gPL |) of approximately 3.7×10-3 in solution and about 4.1×10-3 in doped film. The evaporated circularly polarized phosphorescent organic light-emitting diodes (CP-PhOLEDs) with two enantiomers as emitters exhibited symmetric CPEL signals with |gEL | of (1.1-1.6)×10-3 and decent device performances, achieving a maximum brightness of 11 590 cd m-2 , a maximum external quantum efficiency up to 18.81 %, which are the highest values among the reported devices based on chiral phosphorescent PtII complexes. To suppress the effect of reverse CPEL signal from the cathode reflection, the further implementation of semitransparent aluminum/silver cathode successfully boosts up the |gEL | by over three times to 5.1×10-3 .
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Affiliation(s)
- Zhi-Ping Yan
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Xu-Feng Luo
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Wei-Qiang Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Zheng-Guang Wu
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Xiao Liang
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Kang Liao
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Yi Wang
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - You-Xuan Zheng
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Liang Zhou
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Jing-Lin Zuo
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Yi Pan
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Hongjie Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
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120
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Zhang X, Zhang Y, Li Y, Quan Y, Cheng Y, Li Y. High brightness circularly polarized blue emission from non-doped OLEDs based on chiral binaphthyl-pyrene emitters. Chem Commun (Camb) 2019; 55:9845-9848. [DOI: 10.1039/c9cc04289j] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two pairs of CPL-active enantiomers can emit high brightness blue CP-EL. The CP-OLEDs of chiral emitters R-/S-5 showed high gEL values.
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Affiliation(s)
- Xueyan Zhang
- Key Laboratory of High Performance Polymer Materials & Technology of Ministry of Education
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- China
| | - Yu Zhang
- Key Laboratory of High Performance Polymer Materials & Technology of Ministry of Education
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- China
| | - Yang Li
- Key Laboratory of High Performance Polymer Materials & Technology of Ministry of Education
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- China
| | - Yiwu Quan
- Key Laboratory of High Performance Polymer Materials & Technology of Ministry of Education
- 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
| | - Yunzhi Li
- School of Chemistry and Chemical Engineering
- Linyi University
- Linyi
- China
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121
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Zhang X, Zhang Y, Zhang H, Quan Y, Li Y, Cheng Y, Ye S. High Brightness Circularly Polarized Organic Light-Emitting Diodes Based on Nondoped Aggregation-Induced Emission (AIE)-Active Chiral Binaphthyl Emitters. Org Lett 2018; 21:439-443. [PMID: 30589266 DOI: 10.1021/acs.orglett.8b03620] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A pair of chiral binaphthyl enantiomers ( S-/ R-6) incorporating a tetraphenylethene (TPE) moiety as an aggregation-induced emission (AIE) active group exhibits bright yellow circularly polarized electroluminescence (CP-EL) emission with a remarkable gEL value, low turn-on voltage, and high brightness in the nondoped CP organic light emitting diodes (CP-OLEDs). This work provides a new strategy to develop doping-free CP-OLED materials.
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Affiliation(s)
- Xueyan Zhang
- Key Laboratory of High Performance Polymer Material and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Yu Zhang
- Key Laboratory of High Performance Polymer Material and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Haiping Zhang
- Key Laboratory of High Performance Polymer Material and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Yiwu Quan
- Key Laboratory of High Performance Polymer Material and Technology of Ministry of Education, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Yunzhi 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
| | - Shanghui Ye
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing University of Posts & Telecommunications , Nanjing 210023 , China
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122
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Greenfield JL, Evans EW, Di Nuzzo D, Di Antonio M, Friend RH, Nitschke JR. Unraveling Mechanisms of Chiral Induction in Double-Helical Metallopolymers. J Am Chem Soc 2018; 140:10344-10353. [PMID: 30024156 PMCID: PMC6114842 DOI: 10.1021/jacs.8b06195] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Indexed: 12/18/2022]
Abstract
Self-assembled helical polymers hold great promise as new functional materials, where helical handedness controls useful properties such as circularly polarized light emission or electron spin. The technique of subcomponent self-assembly can generate helical polymers from readily prepared monomers. Here we present three distinct strategies for chiral induction in double-helical metallopolymers prepared via subcomponent self-assembly: (1) employing an enantiopure monomer, (2) polymerization in a chiral solvent, (3) using an enantiopure initiating group. Kinetic and thermodynamic models were developed to describe the polymer growth mechanisms and quantify the strength of chiral induction, respectively. We found the degree of chiral induction to vary as a function of polymer length. Ordered, rod-like aggregates more than 70 nm long were also observed in the solid state. Our findings provide a basis to choose the most suitable method of chiral induction based on length, regiochemical, and stereochemical requirements, allowing stereochemical control to be established in easily accessible ways.
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Affiliation(s)
- Jake L. Greenfield
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United
Kingdom
| | - Emrys W. Evans
- Cavendish
Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, United Kingdom
| | - Daniele Di Nuzzo
- Cavendish
Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, United Kingdom
| | - Marco Di Antonio
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United
Kingdom
| | - Richard H. Friend
- Cavendish
Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, United Kingdom
| | - Jonathan R. Nitschke
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United
Kingdom
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123
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Kulkarni C, Meskers SCJ, Palmans ARA, Meijer EW. Amplifying Chiroptical Properties of Conjugated Polymer Thin-Film Using an Achiral Additive. Macromolecules 2018; 51:5883-5890. [PMID: 30135611 PMCID: PMC6096448 DOI: 10.1021/acs.macromol.8b01077] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/16/2018] [Indexed: 01/05/2023]
Abstract
Chiral conjugated polymers bearing enantiopure side chains offer the possibility to harness the effect of chirality in organic electronic devices. However, its use is hampered by the low degree of circular polarization in absorption (gabs) in most of the conjugated polymer thin-films studied. Here we demonstrate a versatile method to significantly increase the gabs by using a few weight percentages of a commercially available achiral long-chain alcohol as an additive. This additive enhances the chiroptical properties in both absorption and emission by ca. 5-10 times in the thin-films. We envisage that the alcohol additive acts as a plasticizer which enhances the long-range chiral liquid crystalline ordering of the polymer chains, thereby amplifying the chiroptical properties in the thin-film. The application of this methodology to various conjugated polymers has been demonstrated.
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Affiliation(s)
- Chidambar Kulkarni
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Stefan C J Meskers
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Anja R A Palmans
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - E W Meijer
- Laboratory of Macromolecular and Organic Chemistry and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
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124
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Schulz M, Zablocki J, Abdullaeva OS, Brück S, Balzer F, Lützen A, Arteaga O, Schiek M. Giant intrinsic circular dichroism of prolinol-derived squaraine thin films. Nat Commun 2018; 9:2413. [PMID: 29925832 PMCID: PMC6010436 DOI: 10.1038/s41467-018-04811-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 05/18/2018] [Indexed: 12/27/2022] Open
Abstract
Molecular chirality and the inherently connected differential absorption of circular polarized light (CD) combined with semiconducting properties offers great potential for chiral opto-electronics. Here we discuss the temperature-controlled assembly of enantiopure prolinol functionalized squaraines with opposite handedness into intrinsically circular dichroic, molecular J-aggregates in spincasted thin films. By Mueller matrix spectroscopy we accurately probe an extraordinary high excitonic circular dichroism, which is not amplified by mesoscopic ordering effects. At maximum, CD values of 1000 mdeg/nm are reached and, after accounting for reflection losses related to the thin film nature, we obtain a film thickness independent dissymmetry factor g = 0.75. The large oscillator strength of the corresponding absorption within the deep-red spectral range translates into a negative real part of the dielectric function in the spectral vicinity of the exciton resonance. Thereby, we provide a new small molecular benchmark material for the development of organic thin film based chiroptics.
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Affiliation(s)
- Matthias Schulz
- Kekulé Insitute of Organic Chemistry and Biochemistry, Rheinische-Friedrich-Wilhelms-University of Bonn, Gerhard-Domagk-Str. 1, D-53121, Bonn, Germany
| | - Jennifer Zablocki
- Kekulé Insitute of Organic Chemistry and Biochemistry, Rheinische-Friedrich-Wilhelms-University of Bonn, Gerhard-Domagk-Str. 1, D-53121, Bonn, Germany
| | - Oliya S Abdullaeva
- Energy and Semiconductor Research Laboratory, Institute of Physics, Carl-von-Ossietzky-University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, D-26129, Oldenburg, Germany
| | - Stefanie Brück
- Kekulé Insitute of Organic Chemistry and Biochemistry, Rheinische-Friedrich-Wilhelms-University of Bonn, Gerhard-Domagk-Str. 1, D-53121, Bonn, Germany
| | - Frank Balzer
- Mads Clausen Institute, University of Southern Denmark, Alsion 2, DK-6400, Sønderborg, Denmark
| | - Arne Lützen
- Kekulé Insitute of Organic Chemistry and Biochemistry, Rheinische-Friedrich-Wilhelms-University of Bonn, Gerhard-Domagk-Str. 1, D-53121, Bonn, Germany
| | - Oriol Arteaga
- Department of Applied Physics and IN2UB, University of Barcelona, Barcelona, 08028, Spain
| | - Manuela Schiek
- Energy and Semiconductor Research Laboratory, Institute of Physics, Carl-von-Ossietzky-University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, D-26129, Oldenburg, Germany.
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125
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Li M, Li SH, Zhang D, Cai M, Duan L, Fung MK, Chen CF. Stable Enantiomers Displaying Thermally Activated Delayed Fluorescence: Efficient OLEDs with Circularly Polarized Electroluminescence. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800198] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Meng Li
- CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Si-Hua Li
- Institute of Functional Nano & Soft Materials (FUNSOM); Soochow University; Suzhou Jiangsu 215123 China
| | - Dongdong Zhang
- Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Minghan Cai
- Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Lian Duan
- Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Man-Keung Fung
- Institute of Functional Nano & Soft Materials (FUNSOM); Soochow University; Suzhou Jiangsu 215123 China
| | - Chuan-Feng Chen
- CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
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126
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Li M, Li SH, Zhang D, Cai M, Duan L, Fung MK, Chen CF. Stable Enantiomers Displaying Thermally Activated Delayed Fluorescence: Efficient OLEDs with Circularly Polarized Electroluminescence. Angew Chem Int Ed Engl 2018; 57:2889-2893. [DOI: 10.1002/anie.201800198] [Citation(s) in RCA: 246] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Meng Li
- CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Si-Hua Li
- Institute of Functional Nano & Soft Materials (FUNSOM); Soochow University; Suzhou Jiangsu 215123 China
| | - Dongdong Zhang
- Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Minghan Cai
- Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Lian Duan
- Department of Chemistry; Tsinghua University; Beijing 100084 China
| | - Man-Keung Fung
- Institute of Functional Nano & Soft Materials (FUNSOM); Soochow University; Suzhou Jiangsu 215123 China
| | - Chuan-Feng Chen
- CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
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127
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Li J, Peng X, Huang C, Qi Q, Lai WY, Huang W. Control of circularly polarized luminescence from a boron ketoiminate-based π-conjugated polymer via conformational locks. Polym Chem 2018. [DOI: 10.1039/c8py01209a] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Circularly polarized luminescence from a boron ketoiminate-based π-conjugated polymer was successfully realized at the unimolecular level via conformational locks that blocked the intramolecular rotations.
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Affiliation(s)
- Junfeng Li
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing University of Posts & Telecommunications
- Nanjing 210023
- China
| | - Xuelei Peng
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing University of Posts & Telecommunications
- Nanjing 210023
- China
| | - Chao Huang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing University of Posts & Telecommunications
- Nanjing 210023
- China
| | - Qi Qi
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- China
| | - Wen-Yong Lai
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing University of Posts & Telecommunications
- Nanjing 210023
- China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing University of Posts & Telecommunications
- Nanjing 210023
- China
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128
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Yang L, Zhang Y, Zhang X, Li N, Quan Y, Cheng Y. Doping-free circularly polarized electroluminescence of AIE-active chiral binaphthyl-based polymers. Chem Commun (Camb) 2018; 54:9663-9666. [DOI: 10.1039/c8cc05153d] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
AIE-active chiral polymer enantiomers (S-/R-P) can emit green circularly polarized electroluminescence (CP-EL) with gEL up to 0.024.
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Affiliation(s)
- Lan Yang
- 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
| | - Yu Zhang
- Key Laboratory of High Performance Polymer Material and Technology of Ministry of Education
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Xueyan Zhang
- 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
| | - Nengquan Li
- Key Laboratory of High Performance Polymer Material and Technology of Ministry of Education
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Yiwu Quan
- Key Laboratory of High Performance Polymer Material and Technology of Ministry of Education
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - 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
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129
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Kulkarni C, Di Nuzzo D, Meijer EW, Meskers SCJ. Pitch and Handedness of the Cholesteric Order in Films of a Chiral Alternating Fluorene Copolymer. J Phys Chem B 2017; 121:11520-11527. [PMID: 29200297 PMCID: PMC6150679 DOI: 10.1021/acs.jpcb.7b10236] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
![]()
The
molecular organization in thermally annealed films of poly(9,9-bis((S)-3,7-dimethyloctyl)-2,7-fluorene-alt-benzothiadiazole)
is investigated using polarized light. Measurement of linear polarization
in transmission and reflection as a function of layer thickness and
orientation directly show a left handed cholesteric organization with
a pitch length of 600 nm. Results are corroborated by measurements
of circularly polarized reflection and generalized ellipsometry and
are compared to calculations of the optical properties based on the
Maugin–Oseen–DeVries model. For wavelengths near the
lowest allowed optical transition, light with the same handedness
as the cholesteric arrangement (left) is found to be reflected and
transmitted with a probability higher than right circularly polarized
light. The high transmission for left polarized light is interpreted
as an optical manifestation of the Borrmann effect.
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Affiliation(s)
- Chidambar Kulkarni
- Department of Chemical Engineering and Chemistry and Institute of Complex Molecular Systems, Eindhoven University of Technology , 5612 AZ Eindhoven, The Netherlands
| | - Daniele Di Nuzzo
- Department of Physics, University of Cambridge , Cambridge CB2 1 TN, United Kingdom
| | - E W Meijer
- Department of Chemical Engineering and Chemistry and Institute of Complex Molecular Systems, Eindhoven University of Technology , 5612 AZ Eindhoven, The Netherlands
| | - Stefan C J Meskers
- Department of Chemical Engineering and Chemistry and Institute of Complex Molecular Systems, Eindhoven University of Technology , 5612 AZ Eindhoven, The Netherlands
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