1
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Chen D, Tenopala‐Carmona F, Knöller JA, Mischok A, Hall D, Madayanad Suresh S, Matulaitis T, Olivier Y, Nacke P, Gießelmann F, Laschat S, Gather MC, Zysman‐Colman E. Mesogenic Groups Control the Emitter Orientation in Multi-Resonance TADF Emitter Films. Angew Chem Int Ed Engl 2023; 62:e202218911. [PMID: 36760211 PMCID: PMC10947294 DOI: 10.1002/anie.202218911] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/11/2023]
Abstract
The use of thermally activated delayed fluorescence (TADF) emitters and emitters that show preferential horizontal orientation of their transition dipole moment (TDM) are two emerging strategies to enhance the efficiency of OLEDs. We present the first example of a liquid crystalline multi-resonance TADF (MR-TADF) emitter, DiKTa-LC. The compound possesses a nematic liquid crystalline phase between 80 °C and 110 °C. Importantly, the TDM of the spin-coated film shows preferential horizontal orientation, with an anisotropy factor, a, of 0.28, which is preserved in doped poly(vinylcarbazole) films. Green-emitting (λEL =492 nm) solution-processed OLEDs based on DiKTa-LC showed an EQEmax of 13.6 %. We thus demonstrate for the first time how self-assembly of a liquid crystalline TADF emitter can lead to the so-far elusive control of the orientation of the transition dipole in solution-processed films, which will be of relevance for high-performance solution-processed OLEDs.
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Affiliation(s)
- Dongyang Chen
- Organic Semiconductor CentreEaStCHEM School of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
| | - Francisco Tenopala‐Carmona
- Humboldt Centre for Nano- and BiophotonicsDepartment of ChemistryUniversity of CologneGreinstr. 4-650939KölnGermany
| | - Julius A. Knöller
- Institut für Organische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Andreas Mischok
- Humboldt Centre for Nano- and BiophotonicsDepartment of ChemistryUniversity of CologneGreinstr. 4-650939KölnGermany
| | - David Hall
- Organic Semiconductor CentreEaStCHEM School of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
- Laboratory for Chemistry of Novel MaterialsUniversity of MonsMonsBelgium
| | - Subeesh Madayanad Suresh
- Organic Semiconductor CentreEaStCHEM School of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
| | - Tomas Matulaitis
- Organic Semiconductor CentreEaStCHEM School of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
| | - Yoann Olivier
- Laboratory for Computational Modeling of Functional MaterialsNamur Institute of Structured MatterUniversité de NamurRue de Bruxelles 615000NamurBelgium
| | - Pierre Nacke
- Institut für Physikalische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Frank Gießelmann
- Institut für Physikalische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Sabine Laschat
- Institut für Organische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Malte C. Gather
- Humboldt Centre for Nano- and BiophotonicsDepartment of ChemistryUniversity of CologneGreinstr. 4-650939KölnGermany
| | - Eli Zysman‐Colman
- Organic Semiconductor CentreEaStCHEM School of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
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2
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Wang H, Zhou H, He W, Yang Z, Cao H, Wang D, Li Y. Research Progress on Blue-Phase Liquid Crystals for Pattern Replication Applications. MATERIALS (BASEL, SWITZERLAND) 2022; 16:194. [PMID: 36614533 PMCID: PMC9821960 DOI: 10.3390/ma16010194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Blue-Phase Liquid Crystals (BPLCs) are considered to be excellent 3D photonic crystals and have attracted a great deal of attention due to their great potential for advanced applications in a wide range of fields including self-assembling tunable photonic crystals and fast-response displays. BPLCs exhibit promise in patterned applications due to their sub-millisecond response time, three-dimensional cubic structure, macroscopic optical isotropy and high contrast ratio. The diversity of patterned applications developed based on BPLCs has attracted much attention. This paper focuses on the latest advances in blue-phase (BP) materials, including applications in patterned microscopy, electric field driving, handwriting driving, optical writing and inkjet printing. The paper concludes with future challenges and opportunities for BP materials, providing important insights into the subsequent development of BP.
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Affiliation(s)
| | | | - Wanli He
- Correspondence: ; Tel.: +010-62333759
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3
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Dar N, Ankari R. Theoretical Models, Preparation, Characterization and Applications of Cyanine J-Aggregates: A Minireview. Chemistry 2022; 11:e202200103. [PMID: 36423932 PMCID: PMC9691386 DOI: 10.1002/open.202200103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 10/08/2022] [Indexed: 11/27/2022]
Abstract
Cyanines are one of the few kinds of molecules whose absorbance and emission can be shifted in a broad spectral range from the ultraviolet to the near infrared. They can easily transform into J-aggregates with narrow absorption and emission peaks, along with a redshift in their spectra. This mini-review presents cyanine dyes and their J-aggregates and discusses their structure and spectral properties that illustrate their specificities. We summarize the theoretical and experimental state of the art on cyanine J-aggregates and their applications, also laying the groundwork for cyanine J-aggregates synthesis and characterization methods.
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Affiliation(s)
- Nitzan Dar
- Department of PhysicsFaculty of Natural ScienceAriel UniversityAriel40700Israel
| | - Rinat Ankari
- Department of PhysicsFaculty of Natural ScienceAriel UniversityAriel40700Israel
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4
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Wu Z, Reichert H, Reichelt H, Basché T, Müllen K. Photostable NIR-II Pigments from Extended Rylenecarboximides. Chemistry 2022; 28:e202202291. [PMID: 35876273 PMCID: PMC9804991 DOI: 10.1002/chem.202202291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Indexed: 01/09/2023]
Abstract
A series of near-infrared (NIR) organic absorbers, named FNs and FPs, have been obtained with absorption maxima from 870 nm to 1100 nm and thus falling into the attractive second near-infrared region (NIR-II). The synthesis of their extended aromatic cores utilized an initial aryl-amination between 4-aminonaphthalene-1,8-dicarboximide (NMI-NH2 ) or 9-aminoperylene-3,4-dicarboximide (PMI-NH2 ) with chloro-substituted 9,10-anthraquinones followed by a novel base-induced cyclodehydrogenation. A NIR-II pigment, compound FPP, was obtained through de-alkylation of a soluble precursor. The synthesis of this photostable pigment is high-yielding and avoids column chromatographic purification which is important for many applications.
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Affiliation(s)
- Ze‐Hua Wu
- Max Planck Institute for Polymer ResearchAckermannweg 1055128MainzGermany,Institute for Physical ChemistryJohannes Gutenberg University MainzDuesbergweg 10–1455128MainzGermany
| | - Hans Reichert
- BASF Schweiz AGBaselRheinfelderstrasse 4133 SchweizerhalleSwitzerland
| | - Helmut Reichelt
- BASF Schweiz AGBaselRheinfelderstrasse 4133 SchweizerhalleSwitzerland
| | - Thomas Basché
- Institute for Physical ChemistryJohannes Gutenberg University MainzDuesbergweg 10–1455128MainzGermany
| | - Klaus Müllen
- Max Planck Institute for Polymer ResearchAckermannweg 1055128MainzGermany,Institute for Physical ChemistryJohannes Gutenberg University MainzDuesbergweg 10–1455128MainzGermany
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5
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Chen M, Zhang TR, Yu WH, Li QG, Xiang SK, Cao P, Zhao KQ, Feng C, Wang BQ. Hydrogen-bonding Stabilized Columnar Mesophases in Hexasubstituted Triphenylene 2,3-Dicarboxamides. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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6
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Ma Y, Dicce A, Reddy NR, Fang J. Liquid-crystalline ordering of davydov-split aggregates of cyanine dyes. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Uchida J, Soberats B, Gupta M, Kato T. Advanced Functional Liquid Crystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2109063. [PMID: 35034382 DOI: 10.1002/adma.202109063] [Citation(s) in RCA: 65] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/21/2021] [Indexed: 06/14/2023]
Abstract
Liquid crystals have been intensively studied as functional materials. Recently, integration of various disciplines has led to new directions in the design of functional liquid-crystalline materials in the fields of energy, water, photonics, actuation, sensing, and biotechnology. Here, recent advances in functional liquid crystals based on polymers, supramolecular complexes, gels, colloids, and inorganic-based hybrids are reviewed, from design strategies to functionalization of these materials and interfaces. New insights into liquid crystals provided by significant progress in advanced measurements and computational simulations, which enhance new design and functionalization of liquid-crystalline materials, are also discussed.
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Affiliation(s)
- Junya Uchida
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Bartolome Soberats
- Department of Chemistry, University of the Balearic Islands, Cra. Valldemossa Km. 7.5, Palma de Mallorca, 07122, Spain
| | - Monika Gupta
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
- Research Initiative for Supra-Materials, Shinshu University, Wakasato, Nagano, 380-8553, Japan
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8
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Szukalska A, Szukalski A, Stachera J, Zajac D, Chrzumnicka E, Martynski T, Mysliwiec J. Perylene-Based Chromophore as a Versatile Dye for Light Amplification. MATERIALS 2022; 15:ma15030980. [PMID: 35160926 PMCID: PMC8838310 DOI: 10.3390/ma15030980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/18/2022] [Accepted: 01/23/2022] [Indexed: 02/01/2023]
Abstract
One of the challenges for modern optoelectronics is to find versatile, easily adaptable components for novel laser-based technologies. A very attractive perylene-derivative chromophore in different organic matrices for high-performance light amplification is discussed and outlined. Our approach demonstrates the outstandingly compatible laser dye and a viable strategy to provide an effective optical gain for stimulated emission enhancement. Through structural control, we produce simple optical devices embedded in organic matrices, such as poly(methyl methacrylate), nematic liquid crystalline (NLC) mixture, and a hybrid emulsion system (poly(vinyl alcohol) PVA + NLC mesophase). Importantly, we investigate and compare the spectroscopy of differently constructed organic systems in terms of stimulated-emission thresholds and light amplification process efficiency. Moreover, we report the effects of tunability for LC cells by an applied external electric field stimulus. Future directions of laser systems are outlined with an emphasis on the role of the perylene derivative. The studies meet current challenges in the field of modern organic technologies dedicated to various optoelectronic systems, including touch screens, displays, and Li-Fi networks.
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Affiliation(s)
- Alina Szukalska
- The Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Stanislawa Wyspianskiego 27, 50-370 Wroclaw, Poland; (A.S.); (D.Z.); (J.M.)
- Correspondence: ; Tel.: +48-71-320-3197
| | - Adam Szukalski
- The Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Stanislawa Wyspianskiego 27, 50-370 Wroclaw, Poland; (A.S.); (D.Z.); (J.M.)
| | - Justyna Stachera
- Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland; (J.S.); (E.C.); (T.M.)
| | - Dorota Zajac
- The Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Stanislawa Wyspianskiego 27, 50-370 Wroclaw, Poland; (A.S.); (D.Z.); (J.M.)
| | - Ewa Chrzumnicka
- Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland; (J.S.); (E.C.); (T.M.)
| | - Tomasz Martynski
- Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland; (J.S.); (E.C.); (T.M.)
| | - Jaroslaw Mysliwiec
- The Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Stanislawa Wyspianskiego 27, 50-370 Wroclaw, Poland; (A.S.); (D.Z.); (J.M.)
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9
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Li X, Buda F, de Groot HJ, Sevink GJA. The role of chirality and plastic crystallinity in the optical and mechanical properties of chlorosomes. iScience 2022; 25:103618. [PMID: 35005556 PMCID: PMC8719020 DOI: 10.1016/j.isci.2021.103618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 11/15/2021] [Accepted: 12/08/2021] [Indexed: 11/26/2022] Open
Abstract
The most efficient light-harvesting antennae found in nature, chlorosomes, are molecular tubular aggregates (TMAs) assembled by pigments without protein scaffolds. Here, we discuss a classification of chlorosomes as a unique tubular plastic crystal and we attribute the robust energy transfer in chlorosomes to this unique nature. To systematically study the role of supramolecular tube chirality by molecular simulation, a role that has remained unresolved, we share a protocol for generating realistic tubes at atomic resolution. We find that both the optical and the mechanical behavior are strongly dependent on chirality. The optical-chirality relation enables a direct interpretation of experimental spectra in terms of overall tube chirality. The mechanical response shows that the overall chirality regulates the hardness of the tube and provides a new characteristic for relating chlorosomes to distinct chirality. Our protocol also applies to other TMA systems and will inspire other systematic studies beyond lattice models. Classifies chlorosomes in terms of a tubular plastic crystal phase Clarifies the unique strategy of chlorosomes for harvesting and transporting energy Presents a protocol for building atom-resolved helical tube structures Maps tube chirality directly to measurable optical and mechanical responses
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Affiliation(s)
- Xinmeng Li
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2300 RA Leiden, South Holland, the Netherlands
- Department of Chemistry and Hylleraas Centre for Quantum Molecular Sciences, P.O.Box 1033, Blindern, Oslo, 0315 Oslo, Norway
- Corresponding author
| | - Francesco Buda
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2300 RA Leiden, South Holland, the Netherlands
| | - Huub J.M. de Groot
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2300 RA Leiden, South Holland, the Netherlands
| | - G. J. Agur Sevink
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2300 RA Leiden, South Holland, the Netherlands
- Corresponding author
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10
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Wang C, Xie F, Zhong H, Wang F, Huang N. Hierarchical lyotropic liquid crystalline behaviors of supramolecular polymers influenced by alkyl chain branching. Polym Chem 2022. [DOI: 10.1039/d2py00786j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The peripheral chain branching in monomeric structures influences the hierarchical supramolecular assembly and lyotropic liquid crystalline properties.
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Affiliation(s)
- Cong Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Fei Xie
- National Synchrotron Radiation Lab, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Hua Zhong
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Ningdong Huang
- National Synchrotron Radiation Lab, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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11
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Tao J, Zhang J, Song Y, Liu J, Xu HJ. Two asymmetrical perylene diimide derivatives: Synthesis, optical-electrochemical properties and morphologies of self-assembly. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122665] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Mu B, Zhang Z, Quan X, Hao X, Tian W. Perylene Bisimide-Based Luminescent Liquid Crystals with Tunable Solid-State Light Emission. ACS APPLIED MATERIALS & INTERFACES 2021; 13:57786-57795. [PMID: 34821143 DOI: 10.1021/acsami.1c17280] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Perylene bisimides are among the most studied building blocks for supramolecular assemblies in the fabrication of optoelectronic devices for their exceptional optical and electronic properties; however, developing perylene bisimide-based luminescent liquid crystals remains a challenge for the strong π-stacking tendency of the large planar aromatic core to quench the emission. We here reported a novel strategy to achieve luminescent liquid crystals based on perylene bisimides by introducing a conformation-adjustable core to control the molecular stacking arrangement of planar perylene bisimides in the solid state. The emission wavelength is in the deep-red region with a luminescence efficiency of up to 10%. Fluorescence properties of the liquid crystals can be further regulated by photoisomerization-induced structural evolution from columnar to lamellar mesophases. These luminescent liquid crystals are also able to not only exhibit strong emission at high temperatures but also show attractive thermochromic luminescence tuning behaviors. This work provides a new strategy for the design and development of novel solid-state luminescent materials with potential for various optoelectronic applications.
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Affiliation(s)
- Bin Mu
- Shanxi Key Laboratory of Macromolecular Science and Technology, MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Zhelin Zhang
- Shanxi Key Laboratory of Macromolecular Science and Technology, MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Xuhong Quan
- Shanxi Key Laboratory of Macromolecular Science and Technology, MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Xiangnan Hao
- Shanxi Key Laboratory of Macromolecular Science and Technology, MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Wei Tian
- Shanxi Key Laboratory of Macromolecular Science and Technology, MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
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13
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Cravcenco A, Yu Y, Edhborg F, Goebel JF, Takacs Z, Yang Y, Albinsson B, Börjesson K. Exciton Delocalization Counteracts the Energy Gap: A New Pathway toward NIR-Emissive Dyes. J Am Chem Soc 2021; 143:19232-19239. [PMID: 34748317 PMCID: PMC8603381 DOI: 10.1021/jacs.1c10654] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Exciton coupling between the transition dipole moments of ordered dyes in supramolecular assemblies, so-called J/H-aggregates, leads to shifted electronic transitions. This can lower the excited state energy, allowing for emission well into the near-infrared regime. However, as we show here, it is not only the excited state energy modifications that J-aggregates can provide. A bay-alkylated quaterrylene was synthesized, which was found to form J-aggregates in 1,1,2,2-tetrachloroethane. A combination of superradiance and a decreased nonradiative relaxation rate made the J-aggregate four times more emissive than the monomeric counterpart. A reduced nonradiative relaxation rate is a nonintuitive consequence following the 180 nm (3300 cm-1) red-shift of the J-aggregate in comparison to the monomeric absorption. However, the energy gap law, which is commonly invoked to rationalize increased nonradiative relaxation rates with increasing emission wavelength, also contains a reorganization energy term. The reorganization energy is highly suppressed in J-aggregates due to exciton delocalization, and the framework of the energy gap law could therefore reproduce our experimental observations. J-Aggregates can thus circumvent the common belief that lowering the excited state energies results in large nonradiative relaxation rates and are thus a pathway toward highly emissive organic dyes in the NIR regime.
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Affiliation(s)
- Alexei Cravcenco
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296 Gothenburg, Sweden
| | - Yi Yu
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296 Gothenburg, Sweden
| | - Fredrik Edhborg
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 10, 41296 Gothenburg, Sweden
| | - Jonas F Goebel
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296 Gothenburg, Sweden
| | - Zoltan Takacs
- Swedish NMR Centre, University of Gothenburg, Medicinaregatan 5C, 40530 Gothenburg, Sweden
| | - Yizhou Yang
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296 Gothenburg, Sweden
| | - Bo Albinsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 10, 41296 Gothenburg, Sweden
| | - Karl Börjesson
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296 Gothenburg, Sweden
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14
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Sunil D, Salam AAA, Sinha RK, Rodrigues LD, Swamynathan K, Bhagavath P. Mesomorphism in H-bonded binary mixtures of guanazole with nonyloxy benzoic acid. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Eichhorn SH, El-Ballouli AO, Cassar A, Kaafarani BR. Columnar Mesomorphism of Board-Shaped Perylene, Diketopyrrolopyrrole, Isoindigo, Indigo, and Quinoxalino-Phenanthrophenazine Dyes. Chempluschem 2021; 86:319-339. [PMID: 33624951 DOI: 10.1002/cplu.202100024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/11/2021] [Indexed: 12/12/2022]
Abstract
The properties of organic dyes depend as much on their intermolecular interactions as on their molecular structure. While it is generally predictable what supramolecular structure would be ideal for a specific application, the generation of specific supramolecular structures by molecular design and suitable processing methods remains to be a challenge. A versatile approach to different supramolecular structures has been the application of mesomorphism in conjunction with alignment techniques and self-assembly at interfaces. Reviewed here is the columnar mesomorphism of board-shaped dyes perylene, indigo, isoindigo, diketopyrrolopyrrole, and quinoxalinophenanthrophenazine. They generate a larger number of different supramolecular structures than conventional disc-shaped (discotic) mesogens because of their non-circular shape and directional intermolecular interactions. The mesomorphism of all but the perylene derivatives is systematically and comprehensively covered for the first time.
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Affiliation(s)
- S Holger Eichhorn
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Ave, Windsor, ON, N9B 3P4, Canada
| | - A O El-Ballouli
- College of Science and Health Professions, King Saud bin Abdulaziz University for Health Sciences, Riyadh, 11481, Kingdom of Saudi Arabia.,King Abdullah International Medical Research Center, Riyadh, 11426, Kingdom of Saudi Arabia
| | - Adam Cassar
- Department of Chemistry and Biochemistry, University of Windsor, 401 Sunset Ave, Windsor, ON, N9B 3P4, Canada
| | - Bilal R Kaafarani
- Department of Chemistry, American University of Beirut, Beirut, 1107-2020, Lebanon
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16
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Shen CA, Bialas D, Hecht M, Stepanenko V, Sugiyasu K, Würthner F. Polymorphism in Squaraine Dye Aggregates by Self-Assembly Pathway Differentiation: Panchromatic Tubular Dye Nanorods versus J-Aggregate Nanosheets. Angew Chem Int Ed Engl 2021; 60:11949-11958. [PMID: 33751763 PMCID: PMC8252746 DOI: 10.1002/anie.202102183] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Indexed: 12/21/2022]
Abstract
A bis(squaraine) dye equipped with alkyl and oligoethyleneglycol chains was synthesized by connecting two dicyanomethylene substituted squaraine dyes with a phenylene spacer unit. The aggregation behavior of this bis(squaraine) was investigated in non-polar toluene/tetrachloroethane (98:2) solvent mixture, which revealed competing cooperative self-assembly pathways into two supramolecular polymorphs with entirely different packing structures and UV/Vis/NIR absorption properties. The self-assembly pathway can be controlled by the cooling rate from a heated solution of the monomers. For both polymorphs, quasi-equilibrium conditions between monomers and the respective aggregates can be established to derive thermodynamic parameters and insights into the self-assembly mechanisms. AFM measurements revealed a nanosheet structure with a height of 2 nm for the thermodynamically more stable polymorph and a tubular nanorod structure with a helical pitch of 13 nm and a diameter of 5 nm for the kinetically favored polymorph. Together with wide angle X-ray scattering measurements, packing models were derived: the thermodynamic polymorph consists of brick-work type nanosheets that exhibit red-shifted absorption bands as typical for J-aggregates, while the nanorod polymorph consists of eight supramolecular polymer strands of the bis(squaraine) intertwined to form a chimney-type tubular structure. The absorption of this aggregate covers a large spectral range from 550 to 875 nm, which cannot be rationalized by the conventional exciton theory. By applying the Essential States Model and considering intermolecular charge transfer, the aggregate spectrum was adequately reproduced, revealing that the broad absorption spectrum is due to pronounced donor-acceptor overlap within the bis(squaraine) nanorods. The latter is also responsible for the pronounced bathochromic shift observed for the nanosheet structure as a result of the slip-stacked arranged squaraine chromophores.
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Affiliation(s)
- Chia-An Shen
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - David Bialas
- Center for Nanosystems Chemistry (CNC) and Bavarian Polymer Institute (BPI), Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
| | - Markus Hecht
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
- Center for Nanosystems Chemistry (CNC) and Bavarian Polymer Institute (BPI), Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
| | - Vladimir Stepanenko
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Kazunori Sugiyasu
- National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan
| | - Frank Würthner
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
- Center for Nanosystems Chemistry (CNC) and Bavarian Polymer Institute (BPI), Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
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17
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Shen C, Bialas D, Hecht M, Stepanenko V, Sugiyasu K, Würthner F. Polymorphism in Squaraine Dye Aggregates by Self‐Assembly Pathway Differentiation: Panchromatic Tubular Dye Nanorods versus J‐Aggregate Nanosheets. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102183] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Chia‐An Shen
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - David Bialas
- Center for Nanosystems Chemistry (CNC) and Bavarian Polymer Institute (BPI) Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Markus Hecht
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) and Bavarian Polymer Institute (BPI) Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Vladimir Stepanenko
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Kazunori Sugiyasu
- National Institute for Materials Science (NIMS) 1-2-1 Sengen Tsukuba Ibaraki 305-0047 Japan
| | - Frank Würthner
- Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC) and Bavarian Polymer Institute (BPI) Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
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18
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Hecht M, Würthner F. Supramolecularly Engineered J-Aggregates Based on Perylene Bisimide Dyes. Acc Chem Res 2021; 54:642-653. [PMID: 33289387 DOI: 10.1021/acs.accounts.0c00590] [Citation(s) in RCA: 97] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The discovery of the self-assembly of cyanine dyes into J-aggregates had a major impact on the development of dye chemistry due to the emergence of new useful properties in the aggregated state. The unique optical features of these J-aggregates are narrowed, bathochromically shifted absorption bands with almost resonant fluorescence with an increased radiative rate that results from the coherently coupled molecular transition dipoles arranged in a slip-stacked fashion. Because of their desirable properties, J-aggregates gained popularity in the field of functional materials and enabled the efficient photosensitization of silver halide grains in color photography. However, despite a good theoretical understanding of structure-property relationships by the molecular exciton model, further examples of J-aggregates remained scarce for a long time as supramolecular designs to guide the formation of dye aggregates into the required slip-stacked arrangement were lacking.Drawing inspiration from the bacteriochlorophyll c self-organization found in the chlorosomal light-harvesting antennas of green sulfur bacteria, we envisioned the use of nature's supramolecular blueprint to develop J-aggregates of perylene bisimides (PBIs). This class of materials is applied in high-performance color pigments and as n-type organic semiconductors in transistors and solar cells. Combining outstanding photochemical and thermal stability, high tinctorial strength and excellent fluorescence, PBIs are therefore an ideal model system for the preparation of J-aggregates with a wide range of potential applications.In this Account, we elucidate how a combination of steric constraints and hydrogen bonding receptor sites can guide the self-assembly of PBI dyes into slip-stacked packing motifs with J-type exciton coupling. We will discuss the supramolecular polymerization of multiple hydrogen-bonded PBI strands in organic and aqueous media and how minor structural modifications in monomeric PBI molecules can be used to obtain near-infrared absorbing J-aggregates, organogels, or thermoresponsive hydrogels. Pushing the boundaries of self-assembly into the bulk, engineering of the substituents' steric requirements by a dendron-wedge approach afforded adjustable numbers of helical strands of PBI J-aggregates in the columnar liquid-crystalline state and the preparation of lamellar phases. To fully explore their potential, we have studied PBI J-aggregates in collaborative work with spectroscopists, physicists, and theoreticians. In this way, exciton migration over distances of up to 180 nm was shown, and insights into the influence of static disorder on the transport of excitation energy in PBI J-aggregates were derived. Furthermore, the application of PBI J-aggregates as functional materials was demonstrated in photonic microcavities, thin-film transistors, and organic solar cells.
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Affiliation(s)
- Markus Hecht
- Institut für Organische Chemie, Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Frank Würthner
- Institut für Organische Chemie, Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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19
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Bai X, Wang C, Wang X, Jia T, Sun B, Yang S, Li D, Li J, Li H. Strong electron affinity PDI supramolecules form anion radicals for the degradation of organic pollutants via direct electrophilic attack. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01982h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Strong electron affinity PDI supramolecules degrade organic pollutants efficiently through directly electrophilic attack.
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Affiliation(s)
- Xiaojuan Bai
- Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture)
- Ministry of Education
- China
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control
- Beijing University of Civil Engineering and Architecture
| | - Cong Wang
- Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture)
- Ministry of Education
- China
| | - Xuyu Wang
- Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture)
- Ministry of Education
- China
| | - Tianqi Jia
- Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture)
- Ministry of Education
- China
| | - Boxuan Sun
- Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture)
- Ministry of Education
- China
| | - Shengqi Yang
- Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture)
- Ministry of Education
- China
| | - Di Li
- School of Chemistry and Chemical Engineering
- Xi'an University of Architecture and Technology
- Xi'an
- China
| | - Junqi Li
- Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture)
- Ministry of Education
- China
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control
- Beijing University of Civil Engineering and Architecture
| | - Haiyan Li
- Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture)
- Ministry of Education
- China
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control
- Beijing University of Civil Engineering and Architecture
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20
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Lehmann M, Hecht M, Herbst S, Cui K, Würthner F. Unfolding multi-stranded perylene bisimide LC columns - a mesogen design for efficient nanoscale multilayer self-assembly. Chem Commun (Camb) 2020; 56:14015-14018. [PMID: 33095218 DOI: 10.1039/d0cc06458k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mesogen tethered, twofold bay-substituted perylene bisimide (PBI) is found to generate a columnar phase, which unfolds and gradually transforms to a completely nanosegregated multilayer columnar-lamellar liquid crystal. The structure is based on the formation of bundles of H-bonded PBI strands in the central layer. This design opens the way to new complex multifunctional materials.
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Affiliation(s)
- Matthias Lehmann
- Institut für Organische Chemie, Am Hubland, 97074 Würzburg, Germany. and Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
| | - Markus Hecht
- Institut für Organische Chemie, Am Hubland, 97074 Würzburg, Germany. and Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
| | - Stefanie Herbst
- Institut für Organische Chemie, Am Hubland, 97074 Würzburg, Germany. and Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
| | - Kang Cui
- Institut für Organische Chemie, Am Hubland, 97074 Würzburg, Germany.
| | - Frank Würthner
- Institut für Organische Chemie, Am Hubland, 97074 Würzburg, Germany. and Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
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21
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Influence of hydrogen bond on the mesomorphic behaviour in urethane based liquid crystalline compounds: Experimental and computer simulation study. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Rehhagen C, Stolte M, Herbst S, Hecht M, Lochbrunner S, Würthner F, Fennel F. Exciton Migration in Multistranded Perylene Bisimide J-Aggregates. J Phys Chem Lett 2020; 11:6612-6617. [PMID: 32686422 DOI: 10.1021/acs.jpclett.0c01669] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Exciton migration in self-assembled supramolecular ensembles of dye molecules is controlled by the electronic coupling between adjacent sites, the delocalization of the excitation and thereby by the packing arrangement. Here, we put emphasis on the packing structure and analyze the exciton migration in two perylene bisimide-based J-aggregates composed of almost identical molecular building blocks but forming double-strand versus quadruple-strand slip-stacked supramolecular architectures. Analyzing ultrafast transient absorption spectra in dependence on the exciton density by a kinetic model for exciton-exciton annihilation based on incoherent transfer demonstrates that the migration is quasi one-dimensional. The migration distance is enhanced by a beneficial geometrical structure. We find a factor of more than two between the diffusion lengths of 188 and 77 nm for the double- and quadruple-stranded system. The supramolecular design efficiently influences the exciton mobility and minor structural changes have a pronounced influence on functional properties of dye aggregates.
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Affiliation(s)
- Chris Rehhagen
- Institute for Physics and Department "Life, Light & Matter", University of Rostock, 18051 Rostock, Germany
| | - Matthias Stolte
- Institut für Organische Chemie & Center for Nanosystems Chemistry (CNC), Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Stefanie Herbst
- Institut für Organische Chemie & Center for Nanosystems Chemistry (CNC), Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Markus Hecht
- Institut für Organische Chemie & Center for Nanosystems Chemistry (CNC), Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Stefan Lochbrunner
- Institute for Physics and Department "Life, Light & Matter", University of Rostock, 18051 Rostock, Germany
| | - Frank Würthner
- Institut für Organische Chemie & Center for Nanosystems Chemistry (CNC), Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Franziska Fennel
- Institute for Physics and Department "Life, Light & Matter", University of Rostock, 18051 Rostock, Germany
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23
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Hecht M, Leowanawat P, Gerlach T, Stepanenko V, Stolte M, Lehmann M, Würthner F. Self-Sorting Supramolecular Polymerization: Helical and Lamellar Aggregates of Tetra-Bay-Acyloxy Perylene Bisimide. Angew Chem Int Ed Engl 2020; 59:17084-17090. [PMID: 32520408 PMCID: PMC7540443 DOI: 10.1002/anie.202006744] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Indexed: 12/01/2022]
Abstract
A new perylene bisimide (PBI), with a fluorescence quantum yield up to unity, self‐assembles into two polymorphic supramolecular polymers. This PBI bears four solubilizing acyloxy substituents at the bay positions and is unsubstituted at the imide position, thereby allowing hydrogen‐bond‐directed self‐assembly in nonpolar solvents. The formation of the polymorphs is controlled by the cooling rate of hot monomer solutions. They show distinctive absorption profiles and morphologies and can be isolated in different polymorphic liquid‐crystalline states. The interchromophoric arrangement causing the spectral features was elucidated, revealing the formation of columnar and lamellar phases, which are formed by either homo‐ or heterochiral self‐assembly, respectively, of the atropoenantiomeric PBIs. Kinetic studies reveal a narcissistic self‐sorting process upon fast cooling, and that the transformation into the heterochiral (racemic) sheetlike self‐assemblies proceeds by dissociation via the monomeric state.
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Affiliation(s)
- Markus Hecht
- Institut für Organische Chemie, Am Hubland, 97074, Würzburg, Germany.,Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
| | | | - Tabea Gerlach
- Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
| | | | - Matthias Stolte
- Institut für Organische Chemie, Am Hubland, 97074, Würzburg, Germany.,Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
| | - Matthias Lehmann
- Institut für Organische Chemie, Am Hubland, 97074, Würzburg, Germany.,Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
| | - Frank Würthner
- Institut für Organische Chemie, Am Hubland, 97074, Würzburg, Germany.,Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
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24
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Hecht M, Leowanawat P, Gerlach T, Stepanenko V, Stolte M, Lehmann M, Würthner F. Self‐Sorting Supramolecular Polymerization: Helical and Lamellar Aggregates of Tetra‐Bay‐Acyloxy Perylene Bisimide. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006744] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Markus Hecht
- Institut für Organische Chemie Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry & Bavarian Polymer Institute Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
| | | | - Tabea Gerlach
- Center for Nanosystems Chemistry & Bavarian Polymer Institute Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
| | | | - Matthias Stolte
- Institut für Organische Chemie Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry & Bavarian Polymer Institute Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Matthias Lehmann
- Institut für Organische Chemie Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry & Bavarian Polymer Institute Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Frank Würthner
- Institut für Organische Chemie Am Hubland 97074 Würzburg Germany
- Center for Nanosystems Chemistry & Bavarian Polymer Institute Universität Würzburg Theodor-Boveri-Weg 97074 Würzburg Germany
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25
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Liu C, Ding W, Liu Y, Zhao H, Cheng X. Self-assembled star-shaped aza-BODIPY mesogen affords white-light emission. NEW J CHEM 2020. [DOI: 10.1039/c9nj04755g] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A star-shaped aza-BODIPY mesogen exhibits LC, gel, WLE and chemosensor properties.
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Affiliation(s)
- Chao Liu
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Chemistry School of Chemical Science and Technology
- Yunnan University
- Kunming
- P. R. China
| | - Wei Ding
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Chemistry School of Chemical Science and Technology
- Yunnan University
- Kunming
- P. R. China
| | - Yuantao Liu
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Chemistry School of Chemical Science and Technology
- Yunnan University
- Kunming
- P. R. China
| | - Hongmei Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Chemistry School of Chemical Science and Technology
- Yunnan University
- Kunming
- P. R. China
| | - Xiaohong Cheng
- Key Laboratory of Medicinal Chemistry for Natural Resources
- Chemistry School of Chemical Science and Technology
- Yunnan University
- Kunming
- P. R. China
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26
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Partridge BE, Wang L, Sahoo D, Olsen JT, Leowanawat P, Roche C, Ferreira H, Reilly KJ, Zeng X, Ungar G, Heiney PA, Graf R, Spiess HW, Percec V. Sequence-Defined Dendrons Dictate Supramolecular Cogwheel Assembly of Dendronized Perylene Bisimides. J Am Chem Soc 2019; 141:15761-15766. [PMID: 31529966 DOI: 10.1021/jacs.9b08714] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A dendronized perylene bisimide (PBI) that self-organizes into hexagonal arrays of supramolecular double helices with identical single-crystal-like order that disregards chirality was recently reported. A cogwheel model of self-assembly that explains this process was proposed. Accessing the highly ordered cogwheel phase required very slow heating and cooling or extended periods of annealing. Analogous PBIs with linear alkyl chains did not exhibit the cogwheel assembly. Here a library of sequence-defined dendrons containing all possible compositions of linear and racemic alkyl chains was employed to construct self-assembling PBIs. Thermal and structural analysis of their assemblies by differential scanning calorimetry (DSC) and fiber X-ray diffraction (XRD) revealed that the incorporation of n-alkyl chains accelerates the formation of the high order cogwheel phase, rendering the previously invisible phase accessible under standard heating and cooling rates. Small changes to the primary structure, as constitutional isomerism, result in significant changes to macroscopic properties such as melting of the periodic array. This study demonstrated how changes to the sequence-defined primary structure, including the relocation of methyl groups between two constitutional isomers, dictate tertiary and quaternary structure in hierarchical assemblies. This led to the discovery of a sequence that self-organizes the cogwheel assembly much faster than even the corresponding homochiral compounds and demonstrated that defined-sequence, which has long been recognized as a determinant for the complex structure of biomacromolecules including proteins and nucleic acids, plays the same role also in supramolecular synthetic systems.
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Affiliation(s)
- Benjamin E Partridge
- Roy & Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Li Wang
- Roy & Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104-6323 , United States.,College of Materials Science and Engineering , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Dipankar Sahoo
- Roy & Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104-6323 , United States
| | - James T Olsen
- Roy & Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Pawaret Leowanawat
- Roy & Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Cecilé Roche
- Roy & Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Henrique Ferreira
- Roy & Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Kevin J Reilly
- Roy & Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Xiangbing Zeng
- Department of Materials Science and Engineering , University of Sheffield , Sheffield S1 3JD , United Kingdom
| | - Goran Ungar
- Department of Materials Science and Engineering , University of Sheffield , Sheffield S1 3JD , United Kingdom.,State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an 710049 , China
| | - Paul A Heiney
- Department of Physics and Astronomy , University of Pennsylvania , Philadelphia , Pennsylvania 19104-6396 , United States
| | - Robert Graf
- Max-Planck Institute for Polymer Research , 55128 Mainz , Germany
| | - Hans W Spiess
- Max-Planck Institute for Polymer Research , 55128 Mainz , Germany
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , Philadelphia , Pennsylvania 19104-6323 , United States
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27
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28
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Draper ER, Wilbraham L, Adams DJ, Wallace M, Schweins R, Zwijnenburg MA. Insight into the self-assembly of water-soluble perylene bisimide derivatives through a combined computational and experimental approach. NANOSCALE 2019; 11:15917-15928. [PMID: 31414112 DOI: 10.1039/c9nr03898a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We use a combination of computational and experimental techniques to study the self-assembly and gelation of water-soluble perylene bisimides derivatised at the imide position with an amino acid. Specifically, we study the likely structure of self-assembled aggregates of the alanine-functionalised perylene bisimide (PBI-A) and the thermodynamics of their formation using density functional theory and predict the UV-vis spectra of such aggregates using time-dependent density functional theory. We compare these predictions to experiments in which we study the evolution of the UV-Vis and NMR spectra and the rheology and neutron scattering of alkaline PBI-A solutions when gradually decreasing the pH. Based on the combined computational and experimental results, we show that PBI-A self-assembles at all pH values but that aggregates grow in size upon protonation. Hydrogel formation is driven not by aggregate growth but reduction of the aggregation surface-charge and a decrease in the colloidal stability of the aggregation with respect to agglomeration.
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Affiliation(s)
- Emily R Draper
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK.
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29
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Hecht M, Schlossarek T, Stolte M, Lehmann M, Würthner F. Photoconductive Core–Shell Liquid‐Crystals of a Perylene Bisimide J‐Aggregate Donor–Acceptor Dyad. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904789] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Markus Hecht
- Institut für Organische Chemie Center for Nanosystems Chemistry & Bavarian Polymer Institute Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Tim Schlossarek
- Institut für Organische Chemie Center for Nanosystems Chemistry & Bavarian Polymer Institute Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Matthias Stolte
- Institut für Organische Chemie Center for Nanosystems Chemistry & Bavarian Polymer Institute Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Matthias Lehmann
- Institut für Organische Chemie Center for Nanosystems Chemistry & Bavarian Polymer Institute Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Frank Würthner
- Institut für Organische Chemie Center for Nanosystems Chemistry & Bavarian Polymer Institute Universität Würzburg Am Hubland 97074 Würzburg Germany
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30
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Hecht M, Schlossarek T, Stolte M, Lehmann M, Würthner F. Photoconductive Core-Shell Liquid-Crystals of a Perylene Bisimide J-Aggregate Donor-Acceptor Dyad. Angew Chem Int Ed Engl 2019; 58:12979-12983. [PMID: 31246352 DOI: 10.1002/anie.201904789] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Indexed: 12/24/2022]
Abstract
A novel core-shell structured columnar liquid crystal composed of a donor-acceptor dyad of tetraphenoxy perylene bisimide (PBI), decorated with four bithiophene units on the periphery, was synthesized. This molecule self-assembles in solution into helical J-aggregates guided by π-π interactions and hydrogen bonds which organize into a liquid-crystalline (LC) columnar hexagonal domain in the solid state. Donor and acceptor moieties exhibit contrasting exciton coupling behavior with the PBIs' (J-type) transition dipole moment parallel and the bithiophene side arms' (H-type) perpendicular to the columnar axis. The dyad shows efficient energy and electron transfer in solution as well as in the solid state. The synergy of photoinduced electron transfer (PET) and charge transport along the narcissistically self-assembled core-shell structure enables the implementation of the dye in two-contact photoconductivity devices giving rise to a 20-fold increased photoresponse compared to a reference dye without bithiophene donor moieties.
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Affiliation(s)
- Markus Hecht
- Institut für Organische Chemie, Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Tim Schlossarek
- Institut für Organische Chemie, Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Matthias Stolte
- Institut für Organische Chemie, Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Matthias Lehmann
- Institut für Organische Chemie, Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Frank Würthner
- Institut für Organische Chemie, Center for Nanosystems Chemistry & Bavarian Polymer Institute, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
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Ling W, Cheng X, Miao T, Zhang S, Zhang W, Zhu X. Synthesis and Photocontrolled Supramolecular Self-Assembly of Azobenzene-Functionalized Perylene Bisimide Derivatives. Polymers (Basel) 2019; 11:polym11071143. [PMID: 31277350 PMCID: PMC6681406 DOI: 10.3390/polym11071143] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 06/24/2019] [Accepted: 07/02/2019] [Indexed: 11/28/2022] Open
Abstract
Azobenzene (Azo) units were successfully introduced into perylene bisimide (PBI) structures in order to realize the photocontrolling of the morphology of the supramolecular assembly of PBI by a photoisomerization process. A total of three Azo-functionalized perylene bisimide derivatives (PBI1, PBI2, and PBI3) with different alkyl chain lengths were designed and synthesized by imidization of 3,4,9,10-perylene tetracarboxylic dianhydride with the corresponding amines. The structures of these compounds were characterized by proton nuclear magnetic resonance (1H NMR) and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS). The photoisomerization behaviors of Azo units in PBIs were investigated using ultraviolet-visible (UV-VIS) absorption spectroscopy, which were obviously effected by solvents and the alkyl chain length. Furthermore, the photoisomerization of Azo units has the obviously regulatory effect on the morphology of supramolecular assembly of PBIs, especially for the medium-length alkyl chain-linked Azo-functionalized PBI derivative (PBI2). This research realized the photocontrolling of the morphology of the supramolecular assembly of PBI derivatives by photoisomerization of Azo units.
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Affiliation(s)
- Weikang Ling
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Xiaoxiao Cheng
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Tengfei Miao
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Shuangshuang Zhang
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Wei Zhang
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Xiulin Zhu
- Global Institute of Software Technology, No 5. Qingshan Road, Suzhou National Hi-Tech District, Suzhou 215163, China
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Dannenhoffer A, Sai H, Huang D, Nagasing B, Harutyunyan B, Fairfield DJ, Aytun T, Chin SM, Bedzyk MJ, Olvera de la Cruz M, Stupp SI. Impact of charge switching stimuli on supramolecular perylene monoimide assemblies. Chem Sci 2019; 10:5779-5786. [PMID: 31293765 PMCID: PMC6568310 DOI: 10.1039/c8sc05595e] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 04/30/2019] [Indexed: 11/21/2022] Open
Abstract
The development of stimuli-responsive amphiphilic supramolecular nanostructures is an attractive target for systems based on light-absorbing chromophores that can function as photosensitizers in water. We report here on a water soluble supramolecular carboxylated perylene monoimide system in which charge can be switched significantly by a change in pH. This was accomplished by substituting the perylene core with an ionizable hydroxyl group. In acidic environments, crystalline supramolecular nanoribbons with dimensions on the order of 500 × 50 × 2 nm form readily, while in basic solution the additional electrostatic repulsion of the ionized hydroxyl reduces assemblies to very small dimensions on the order of only several nanometers. The HOMO/LUMO levels were also found to be sensitive to pH; in acidic media the HOMO/LUMO levels are -5.65 and -3.70 eV respectively versus vacuum, whereas is in basic conditions they are -4.90 and -3.33 eV, respectively. Utilizing the assemblies as photosensitizers in photocatalytic production of hydrogen with [Mo3S13]2- as a catalyst at a pH of 4, H2 was generated with a turnover number of 125 after 18 hours. Charge switching the assemblies at a pH of 9-10 and using an iron porphyrin catalyst, protons could again be reduced to hydrogen and CO2 was reduced to CO with a turnover number of 30. The system investigated offers an example of dynamic photosensitizing assemblies that can drive reactions in both acidic and basic media.
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Affiliation(s)
- Adam Dannenhoffer
- Department of Materials Science and Engineering , 2220 Campus Drive , Evanston , IL 60208 , USA
| | - Hiroaki Sai
- Department of Materials Science and Engineering , 2220 Campus Drive , Evanston , IL 60208 , USA
- Simpson Querrey Institute , Northwestern University , 303 E. Superior , Chicago , Illinois 60611 , USA
| | - Dongxu Huang
- Department of Materials Science and Engineering , 2220 Campus Drive , Evanston , IL 60208 , USA
| | - Benjamin Nagasing
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , IL 60208 , USA .
| | - Boris Harutyunyan
- Department of Physics and Astronomy , Northwestern University , 2145 Sheridan Road , Evanston , IL 60208 , USA
| | - Daniel J Fairfield
- Department of Materials Science and Engineering , 2220 Campus Drive , Evanston , IL 60208 , USA
| | - Taner Aytun
- Department of Materials Science and Engineering , 2220 Campus Drive , Evanston , IL 60208 , USA
| | - Stacey M Chin
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , IL 60208 , USA .
| | - Michael J Bedzyk
- Department of Materials Science and Engineering , 2220 Campus Drive , Evanston , IL 60208 , USA
- Department of Physics and Astronomy , Northwestern University , 2145 Sheridan Road , Evanston , IL 60208 , USA
| | - Monica Olvera de la Cruz
- Department of Materials Science and Engineering , 2220 Campus Drive , Evanston , IL 60208 , USA
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , IL 60208 , USA .
| | - Samuel I Stupp
- Department of Materials Science and Engineering , 2220 Campus Drive , Evanston , IL 60208 , USA
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , IL 60208 , USA .
- Department of Medicine , Northwestern University , 676 N St. Clair , Chicago , Illinois 60611 , USA
- Simpson Querrey Institute , Northwestern University , 303 E. Superior , Chicago , Illinois 60611 , USA
- Department of Biomedical Engineering , Northwestern University , 2145 Sheridan Road , Evanston , IL 60208 , USA
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Gupta RK, Sudhakar AA. Perylene-Based Liquid Crystals as Materials for Organic Electronics Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:2455-2479. [PMID: 29929366 DOI: 10.1021/acs.langmuir.8b01081] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Columnar phases formed by the stacking of disclike molecules with an intimate π-π overlap forms a 1D pathway for the anisotropic charge migration along the columns. Columnar phases have great potential in organic electronic devices to be utilized as active semiconducting layers in comparison to organic single crystals or amorphous polymers in terms of processability, ease of handling, and high charge carrier mobility. Intelligent molecular engineering of perylene and its derivatives provided access to tune the physical properties and self-assembly behavior. The columnar phase formed by perylene derivatives has great potential in the fabrication of organic electronic devices. There are several positions on the perylene molecule, which can be functionalized to tune its self-assembly, as well as optoelectronic properties. Thus, many liquid-crystalline molecules stabilizing the columnar phase, which are based on perylene tetraesters, perylene diester imides, and perylene bisimides, have been synthesized over the years. Their longitudinal and laterally extended derivatives, bay-substituted derivatives exhibiting a columnar phase, are reported. In addition, several liquid-crystalline oligomers and polymers based on perylene derivatives were also reported. All such modifications provide an option to tune the energy levels of frontier molecular orbitals with respect to the work function of the electrodes in devices and also the processability of such materials. In this feature article, we attempt to provide an overview of the molecular design developed to tune the applicable properties and self-assembly of perylene derivatives as well as recent developments related to their application in the fabrication of organic solar cells, organic light-emitting diodes, and organic field-effect transistors.
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Affiliation(s)
- Ravindra Kumar Gupta
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , Assam , India
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Guo Z, Zhang X, Wang Y, Li Z. Supramolecular Self-Assembly of Perylene Bisimide Derivatives Assisted by Various Groups. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:342-358. [PMID: 30577691 DOI: 10.1021/acs.langmuir.8b02964] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-1,3,8,10(2H,9H)-tetraone, namely, perylene bisimides (PBIs), belong to n-type organic semiconductors and possess potential applications in optoelectronic devices. The properties/performance of fabricated nanostructures/devices could be greatly influenced by both molecular structures of PBI building blocks and corresponding arrangement in assembled nanostructures. Many efforts have been made to modify the PBI core and then investigate the nanostructures and properties. However, it is still a great challenge to comprehensively understand the influence of molecular structures on the intermolecular interactions, the self-assembled structures, and the resulting performance. In the present contribution, we mainly summarize recent research aspects on supramolecular assembly behaviors of PBI derivatives assisted by various functional groups. First, a short introduction is given about basic molecular structure, properties, and self-assembly of PBI derivatives. Then, we mainly discuss the modulation of self-assembly of PBIs via introducing various functional groups (flexible or nonflexible chains, and biomolecules especially amino-acid-based groups). After that, the assembly of PBI derivatives from out-of-equilibrium states is described. Finally, a perspective is provided on the design of novel PBI derivatives and the fabrication of unique nanostructures with superior properties.
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Affiliation(s)
- Zongxia Guo
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department , College of Polymer Science and Engineering Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Xiao Zhang
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department , College of Polymer Science and Engineering Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Yujiao Wang
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department , College of Polymer Science and Engineering Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
| | - Zhibo Li
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department , College of Polymer Science and Engineering Qingdao University of Science and Technology , Qingdao 266042 , P. R. China
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Li Y, Zhao J, Chen L, Yuan Y, Zhang H. Effect of molecular weight of side chain liquid crystalline polymers on properties of liquid crystal physical gels. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2018.10.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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36
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Hecht M, Soberats B, Zhu J, Stepanenko V, Agarwal S, Greiner A, Würthner F. Anisotropic microfibres of a liquid-crystalline diketopyrrolopyrrole by self-assembly-assisted electrospinning. NANOSCALE HORIZONS 2019; 4:169-174. [PMID: 32254152 DOI: 10.1039/c8nh00219c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Electrospinning is a well-established technique for the preparation of nanofibres from polymer solution or melt, however it is rarely applied for small molecules. Here we report a unique example of a liquid-crystalline (LC) diketopyrrolopyrrole (DPP) dye that was successfully used for electrospinning. Micrometric fibres with anisotropic alignment of DPP dye were produced by this process as shown by polarized optical microscopy and selected area electron diffraction. This newly designed DPP dye self-assembles in solution by hydrogen bonding and π-π-interactions and forms columnar LC phases in the bulk. X-ray scattering and polarized FT-IR studies in the LC state revealed a hierarchical arrangement of DPP molecules into columnar structures. The successful preparation of anisotropic microfibers by electrospinning is attributed to the hydrogen bond-directed supramolecular polymerization of the new DPP dye in solution and its LC properties.
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Affiliation(s)
- Markus Hecht
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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37
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Urban M, Górka P, Nawara K, Woźniak K, Durka K, Luliński S. The effect of conformational isomerism on the optical properties of bis(8-oxyquinolato) diboron complexes with a 2,2'-biphenyl backbone. Dalton Trans 2018; 47:15670-15684. [PMID: 30270394 DOI: 10.1039/c8dt03197e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fluorescent bis(8-oxyquinolato) diborinic complex with a central 2,2'-biphenyl backbone 1 and its octafluoro analogue 2 were synthesized to study the optical-structural relationship of sterically encumbered molecules featuring close intramolecular π-stacking interactions involving chromophore units. The crystal structure of 1 revealed a unique π-stacked arrangement of two pendant phenyl groups and two 8-oxyquinolato ligands (Q) located in the inner part of the complex. Unlike 1, the closely related complex 2 features conformational isomerism, and two major forms, namely 2-syn and 2-anti, are observed in solution to a varying extent depending on the solvent polarity. Form 2-syn, a geometrical analogue of 1, is preferable in polar solutions, whereas its rotational isomer 2-anti featuring π-stacking interactions between the terminal phenyl group and Q ligand dominates in benzene and chloromethane solutions. The observed conformational equilibria strongly affect the optical properties of the system, specifically leading to a significant increase of the quantum yield of emission (from 22% in MeCN to 38% in benzene) accompanied by a bathochromic shift (Δλ = 10 nm) of absorption and hypsochromic shifts (Δλ = -8 nm) of emission spectra with decreasing solvent polarity. This effect was ascribed to the variation in frontier orbital distributions.
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Affiliation(s)
- Mateusz Urban
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
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Haenle JC, Stöckl Y, Forschner R, Haenle E, Laschat S. Fluorophobic Effect Promoting Lamellar Self-Assembly of Donor Acceptor Dyes. Chemphyschem 2018; 19:2758-2767. [PMID: 29999251 DOI: 10.1002/cphc.201800449] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Indexed: 11/07/2022]
Abstract
To combine liquid crystalline and linear optical properties in the same molecule, the fluorophobic effect was probed for the first time in donor acceptor dyes. Thus, a series of mono-, bi-, and tricyclic donor acceptor dyes with 1H,1H-perfluorinated alkyl chains of different lengths as donor units and nitrile, malononitrile or barbiturate as acceptor units was synthesized in 5 steps and 1.4-6.6 % overall yield. UV/Vis and fluorescence spectroscopy, cyclic voltammetry and DFT calculations revealed that absorption and emission maxima, Stokes shifts and LUMO energies were mainly governed by the chromophore size and acceptor strengths. The perfluorinated chain was electronically almost decoupled from the remaining chromophore and induced only slight changes of the absorption maxima as compared to the alkyl substituted counterparts. However, in contrast to the non-mesomorphic alkyl donor-substituted derivatives, the perfluorinated donors resulted in self-assembly into partially interdigitated SmA bilayers according to differential scanning calorimetry (DSC), polarizing optical microscopy (POM), X-ray diffraction (WAXS, SAXS) studies and electron density profile calculations.
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Affiliation(s)
| | - Yannick Stöckl
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwalding 55, 70569, Stuttgart, Germany
| | - Robert Forschner
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwalding 55, 70569, Stuttgart, Germany
| | - Elena Haenle
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwalding 55, 70569, Stuttgart, Germany
| | - Sabine Laschat
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwalding 55, 70569, Stuttgart, Germany
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39
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Zhao J, Yuan Y, Chen L, Li Y, Zhang H. High performance liquid crystalline physical gels prepared by side chain liquid crystalline polymers. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.04.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Grande V, Soberats B, Herbst S, Stepanenko V, Würthner F. Hydrogen-bonded perylene bisimide J-aggregate aqua material. Chem Sci 2018; 9:6904-6911. [PMID: 30210765 PMCID: PMC6124903 DOI: 10.1039/c8sc02409j] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 07/20/2018] [Indexed: 02/06/2023] Open
Abstract
A water-soluble perylene bisimide dye self-assembles in aqueous media into thermoresponsive aqua materials with photoluminescence within the biological transparency window.
A new twelvefold methoxy-triethyleneglycol-jacketed tetraphenoxy-perylene bisimide (MEG-PBI) amphiphile was synthesized that self-assembles into two types of supramolecular aggregates in water: red-coloured aggregates of low order and with weak exciton coupling among the PBIs and blue-coloured strongly coupled J-aggregates consisting of a highly ordered hydrogen-bonded triple helix of PBIs. At room temperature this PBI is miscible with water at any proportions which enables the development of robust dye aggregates in solution, in hydrogel states and in lyotropic liquid crystalline states. In the presence of 60–95 wt% water, self-standing coloured hydrogels exhibit colour changes from red to blue accompanied by a fluorescence light-up in the far-red region upon heating in the range of 30–50 °C. This phenomenon is triggered by an entropically driven temperature-induced hydrogen-bond-directed slipped stacking arrangement of the MEG-PBI chromophores within structurally well-defined J-aggregates. This versatile aqua material is the first example of a stable PBI J-aggregate in water. We anticipate that this study will open a new avenue for the development of biocompatible functional materials based on self-assembled dyes and inspire the construction of other hydrogen-bonded supramolecular materials in the highly competitive solvent water.
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Affiliation(s)
- Vincenzo Grande
- Universität Würzburg , Institut für Organische Chemie , Am Hubland , 97074 Würzburg , Germany . .,Center for Nanosystems Chemistry , Bavarian Polymer Institute (BPI) , Universität Würzburg , Theodor-Boveri-Weg , 97074 Würzburg , Germany
| | - Bartolome Soberats
- Center for Nanosystems Chemistry , Bavarian Polymer Institute (BPI) , Universität Würzburg , Theodor-Boveri-Weg , 97074 Würzburg , Germany
| | - Stefanie Herbst
- Universität Würzburg , Institut für Organische Chemie , Am Hubland , 97074 Würzburg , Germany .
| | - Vladimir Stepanenko
- Universität Würzburg , Institut für Organische Chemie , Am Hubland , 97074 Würzburg , Germany .
| | - Frank Würthner
- Universität Würzburg , Institut für Organische Chemie , Am Hubland , 97074 Würzburg , Germany . .,Center for Nanosystems Chemistry , Bavarian Polymer Institute (BPI) , Universität Würzburg , Theodor-Boveri-Weg , 97074 Würzburg , Germany
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41
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Self-assembly of multi-stranded perylene dye J-aggregates in columnar liquid-crystalline phases. Nat Commun 2018; 9:2646. [PMID: 29980743 PMCID: PMC6035248 DOI: 10.1038/s41467-018-05018-6] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 06/12/2018] [Indexed: 02/02/2023] Open
Abstract
Many discoid dyes self-assemble into columnar liquid-crystalline (LC) phases with packing arrangements that are undesired for photonic applications due to H-type exciton coupling. Here, we report a series of crystalline and LC perylene bisimides (PBIs) self-assembling into single or multi-stranded (two, three, and four strands) aggregates with predominant J-type exciton coupling. These differences in the supramolecular packing and optical properties are achieved by molecular design variations of tetra-bay phenoxy-dendronized PBIs with two N–H groups at the imide positions. The self-assembly is driven by hydrogen bonding, slipped π–π stacking, nanosegregation, and steric requirements of the peripheral building blocks. We could determine the impact of the packing motifs on the spectroscopic properties and demonstrate different J- and H-type coupling contributions between the chromophores. Our findings on structure–property relationships and strong J-couplings in bulk LC materials open a new avenue in the molecular engineering of PBI J-aggregates with prospective applications in photonics. Perylene bisimides (PBI) exhibit interesting photophysical and self-assembly properties but detailed understanding of the correlation between packing motif and spectroscopic properties is lacking. Here the authors report on self-assembling of PBIs in liquid crystalline phases to give aggregates with J- and H-type coupling contribution between the chromophores.
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42
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Dostál J, Fennel F, Koch F, Herbst S, Würthner F, Brixner T. Direct observation of exciton-exciton interactions. Nat Commun 2018; 9:2466. [PMID: 29941915 PMCID: PMC6018121 DOI: 10.1038/s41467-018-04884-4] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 06/01/2018] [Indexed: 12/11/2022] Open
Abstract
Natural light harvesting as well as optoelectronic and photovoltaic devices depend on efficient transport of energy following photoexcitation. Using common spectroscopic methods, however, it is challenging to discriminate one-exciton dynamics from multi-exciton interactions that arise when more than one excitation is present in the system. Here we introduce a coherent two-dimensional spectroscopic method that provides a signal only in case that the presence of one exciton influences the behavior of another one. Exemplarily, we monitor exciton diffusion by annihilation in a perylene bisimide-based J-aggregate. We determine quantitatively the exciton diffusion constant from exciton–exciton-interaction 2D spectra and reconstruct the annihilation-free dynamics for large pump powers. The latter enables for ultrafast spectroscopy at much higher intensities than conventionally possible and thus improves signal-to-noise ratios for multichromophore systems; the former recovers spatio–temporal dynamics for a broad range of phenomena in which exciton interactions are present. Some photo-physical processes in multichromophore systems might get triggered only if two excitations are present. Here, the authors introduce exciton–exciton-interaction 2D spectroscopy, which is a non-linear optical method that can selectively track the time evolution of such effects.
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Affiliation(s)
- Jakub Dostál
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Franziska Fennel
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Center for Nanosystems Chemistry (CNC), Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany
| | - Federico Koch
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Stefanie Herbst
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Frank Würthner
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany. .,Center for Nanosystems Chemistry (CNC), Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany.
| | - Tobias Brixner
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany. .,Center for Nanosystems Chemistry (CNC), Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Germany.
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Liu G, Sheng J, Wu H, Yang C, Yang G, Li Y, Ganguly R, Zhu L, Zhao Y. Controlling Supramolecular Chirality of Two-Component Hydrogels by J- and H-Aggregation of Building Blocks. J Am Chem Soc 2018; 140:6467-6473. [DOI: 10.1021/jacs.8b03309] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Guofeng Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Jianhui Sheng
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, P.R. China
| | - Hongwei Wu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Chaolong Yang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Guangbao Yang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Yongxin Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Rakesh Ganguly
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Liangliang Zhu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, P.R. China
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
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44
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Liang Z, Yang Z, Huang Z, Qi J, Chen M, Zhang W, Zheng H, Sun J, Cao R. Novel insight into the epitaxial growth mechanism of six-fold symmetrical β-Co(OH)2/Co(OH)F hierarchical hexagrams and their water oxidation activity. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.03.186] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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45
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Dirian K, Bauroth S, Roth A, Syrgiannis Z, Rigodanza F, Burian M, Amenitsch H, Sharapa DI, Prato M, Clark T, Guldi DM. A water-soluble, bay-functionalized perylenediimide derivative - correlating aggregation and excited state dynamics. NANOSCALE 2018; 10:2317-2326. [PMID: 29327015 DOI: 10.1039/c7nr07870f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aggregation and the photophysics of a water soluble perylenediimide (PDI) derivative that features two bromine substituents in the bay positions has been probed. Non-fluorescent aggregates were found to be present at concentrations of 1.0 × 10-5 M. In situ small-angle X-ray scattering (SAXS) measurements and complementary molecular modeling showed the presence of PDI aggregates. In their singlet excited states, the PDI aggregates are characterized by distinct transient fingerprints and rapid deactivation, as revealed by pump-probe experiments on the femto-, pico-, nano-, and microsecond timescales. The product of this deactivation is a PDI triplet excited state. The efficiency of the triplet formation depends on the concentration, and hence on the degree of aggregation. Notably, for PDI concentrations in the range of the critical micelle concentration, the efficiency of intersystem crossing is close to zero. In short, we have demonstrated, for the first time, aggregation-induced formation of triplet excited states for PDI derivatives.
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Affiliation(s)
- K Dirian
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-University Erlangen-Nuernberg, 91058 Erlangen, Germany.
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46
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Wang JF, Yao Y, Ning Y, Meng YS, Hou CL, Zhang J, Zhang JL. The design of rigid cyclic tripyrrins: the importance of intermolecular interactions on aggregation and luminescence. Org Chem Front 2018. [DOI: 10.1039/c8qo00313k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclic tripyrrin “locked” by a bridging benzyl moiety: enhancing the molecular rigidity and tuning aggregation and fluorescence via intermolecular halogen interactions.
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Affiliation(s)
- Jun-Fei Wang
- College of Materials Science and Optoelectronics Technology
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Yuhang Yao
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Yingying Ning
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Yin-Shan Meng
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Chun-Liang Hou
- College of Materials Science and Optoelectronics Technology
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Jing Zhang
- College of Materials Science and Optoelectronics Technology
- University of Chinese Academy of Sciences
- Beijing 100049
- P. R. China
| | - Jun-Long Zhang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
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47
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Gutiérrez-Moreno D, Sastre-Santos Á, Fernández-Lázaro F. Synthesis of bay-triaminosubstituted perylenediimides. Org Chem Front 2018. [DOI: 10.1039/c8qo00325d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A mild fluoride-mediated reaction for the synthesis of 1,6,7-triaminoperylenediimides.
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Affiliation(s)
- D. Gutiérrez-Moreno
- Área de Química Orgánica
- Instituto de Bioingeniería
- Universidad Miguel Hernández de Elche
- Elche 03202
- Spain
| | - Á. Sastre-Santos
- Área de Química Orgánica
- Instituto de Bioingeniería
- Universidad Miguel Hernández de Elche
- Elche 03202
- Spain
| | - F. Fernández-Lázaro
- Área de Química Orgánica
- Instituto de Bioingeniería
- Universidad Miguel Hernández de Elche
- Elche 03202
- Spain
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48
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Yuan K, Wang X, Mellerup SK, Kozin I, Wang S. Spiro-BODIPYs with a Diaryl Chelate: Impact on Aggregation and Luminescence. J Org Chem 2017; 82:13481-13487. [DOI: 10.1021/acs.joc.7b02602] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kang Yuan
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Xiang Wang
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Soren K Mellerup
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Igor Kozin
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Suning Wang
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
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49
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Gan KP, Yoshio M, Sugihara Y, Kato T. Guanine-oligothiophene conjugates: liquid-crystalline properties, photoconductivities and ion-responsive emission of their nanoscale assemblies. Chem Sci 2017; 9:576-585. [PMID: 29629121 PMCID: PMC5869320 DOI: 10.1039/c7sc03764c] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 10/24/2017] [Indexed: 11/27/2022] Open
Abstract
Liquid-crystalline conjugated guanine–oligothiophene derivatives show electron or ambipolar carrier transport properties and ion-induced phase transition accompanied by a luminescence colour change.
We here report the supramolecular self-assembly of hydrogen-bonded motifs for the development of nanostructured materials that exhibit dynamic functions such as stimuli-responsive properties and molecular recognition behaviour. We have designed and synthesised new thermotropic bicontinuous and columnar liquid-crystalline (LC) guanine–oligothiophene conjugates tethered with lipophilic chains, which exhibit ionic, electronic and photoluminescence properties. Their potassium salt complexes self-assemble into thermotropic columnar LC phases. Time-of-flight photoconductivity measurements have revealed that the guanine–oligothiophene conjugates in the LC states possess charge transport abilities with either electron or ambipolar mobility values of 10–4 to 10–3 cm2 V–1 s–1. Furthermore, we have found that the complexation of potassium ions with the guanine motif could lead not only to structural change and thermal stabilization of the LC phases but also to a photoluminescence colour change in the solid states. The strategy presented in this work could lead to the design of new functional LC materials that could potentially be applicable as sensors and electronic devices.
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Affiliation(s)
- Kian Ping Gan
- Department of Chemistry and Biotechnology , School of Engineering , The University of Tokyo , Hongo, Bunkyo-ku , Tokyo 113-8656 , Japan . ; ; Tel: +81-3-5841-7440
| | - Masafumi Yoshio
- Department of Chemistry and Biotechnology , School of Engineering , The University of Tokyo , Hongo, Bunkyo-ku , Tokyo 113-8656 , Japan . ; ; Tel: +81-3-5841-7440
| | - Yuki Sugihara
- Department of Chemistry and Biotechnology , School of Engineering , The University of Tokyo , Hongo, Bunkyo-ku , Tokyo 113-8656 , Japan . ; ; Tel: +81-3-5841-7440
| | - Takashi Kato
- Department of Chemistry and Biotechnology , School of Engineering , The University of Tokyo , Hongo, Bunkyo-ku , Tokyo 113-8656 , Japan . ; ; Tel: +81-3-5841-7440
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50
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Soberats B, Hecht M, Würthner F. Diketopyrrolopyrrole Columnar Liquid-Crystalline Assembly Directed by Quadruple Hydrogen Bonds. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705137] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bartolome Soberats
- Center for Nanosystems Chemistry (CNC) & Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Markus Hecht
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Frank Würthner
- Center for Nanosystems Chemistry (CNC) & Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
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