1
|
Park S, Uchida J, Urushibara K, Kagechika H, Kato T, Tanatani A. Self-assembly of Liquid-crystalline Squaramides. CHEM LETT 2018. [DOI: 10.1246/cl.171208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Soyoung Park
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Junya Uchida
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Ko Urushibara
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Hiroyuki Kagechika
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Aya Tanatani
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| |
Collapse
|
2
|
Palmans AR, Vekemans JA, Fischer H, Hikmet RA, Meijer EW. Extended-Core Discotic Liquid Crystals Based on the Intramolecular H-Bonding in N-Acylated 2,2'-Bipyridine-3,3'-diamine Moieties. Chemistry 2013; 3:300-7. [PMID: 24022962 DOI: 10.1002/chem.19970030220] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/1996] [Indexed: 11/08/2022]
Abstract
A new type of disc-shaped molecule (1 a-c) has been synthesised and characterised. The molecules were built up by linking three lipophilic, N-monoacylated 2,2'-bipyridine-3,3'-diamine wedges to a central 1,3,5-benzenetricarbonyl unit. They show liquid crystalline behaviour, as shown by DSC, polarisation microscopy and X-ray diffraction. In all cases the mesophase was characterised as a Dho phase. From (1) H NMR results it was shown that the interior of compounds 1 a-c preferentially adopts a C3 symmetrical conformation owing to strong intramolecular H-bonding, which gives rise to an extended core. This large core induces strong interactions between molecules, leading to mesophases of enhanced thermal stability.
Collapse
Affiliation(s)
- A R Palmans
- Laboratory of Organic Chemistry, Eindhoven University of Technology POBox 513, 5600 MB Eindhoven (The Netherlands), Fax: Int. code +(40)245-1036, e-mail:
| | | | | | | | | |
Collapse
|
3
|
Fleischmann EK, Zentel R. Liquid-crystalline ordering as a concept in materials science: from semiconductors to stimuli-responsive devices. Angew Chem Int Ed Engl 2013; 52:8810-27. [PMID: 23881749 DOI: 10.1002/anie.201300371] [Citation(s) in RCA: 166] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Indexed: 11/10/2022]
Abstract
While the unique optical properties of liquid crystals (LCs) are already well exploited for flat-panel displays, their intrinsic ability to self-organize into ordered mesophases, which are intermediate states between crystal and liquid, gives rise to a broad variety of additional applications. The high degree of molecular order, the possibility for large scale orientation, and the structural motif of the aromatic subunits recommend liquid-crystalline materials as organic semiconductors, which are solvent-processable and can easily be deposited on a substrate. The anisotropy of liquid crystals can further cause a stimuli-responsive macroscopic shape change of cross-linked polymer networks, which act as reversibly contracting artificial muscles. After illustrating the concept of liquid-crystalline order in this Review, emphasis will be placed on synthetic strategies for novel classes of LC materials, and the design and fabrication of active devices.
Collapse
Affiliation(s)
- Eva-Kristina Fleischmann
- Institut für organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
| | | |
Collapse
|
4
|
Fleischmann EK, Zentel R. Flüssigkristalline Ordnung als Konzept in den Materialwissenschaften: von Halbleitern zu funktionalen Bauteilen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300371] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
5
|
Metzroth T, Hoffmann A, Martín-Rapún R, Smulders MMJ, Pieterse K, Palmans ARA, Vekemans JAJM, Meijer EW, Spiess HW, Gauss J. Unravelling the fine structure of stacked bipyridine diamine-derived C3-discotics as determined by X-ray diffraction, quantum-chemical calculations, Fast-MAS NMR and CD spectroscopy. Chem Sci 2011. [DOI: 10.1039/c0sc00292e] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
6
|
Kato T, Yasuda T, Kamikawa Y, Yoshio M. Self-assembly of functional columnar liquid crystals. Chem Commun (Camb) 2009:729-39. [DOI: 10.1039/b816624b] [Citation(s) in RCA: 284] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
7
|
Li G, Luo J, Wang T, Zhou E, Huang J, Bengs H, Ringsdorf H. Structure and Conformation of 2,3,6, 7,10,11 -hexakispentyloxytriphenylene by TEM and Computer Simulation. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259808045520] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- G. Li
- a Polymer Physics Laboratory, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences, Changchun , 130022 , China
| | - J. Luo
- a Polymer Physics Laboratory, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences, Changchun , 130022 , China
| | - T. Wang
- a Polymer Physics Laboratory, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences, Changchun , 130022 , China
| | - E. Zhou
- a Polymer Physics Laboratory, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences, Changchun , 130022 , China
| | - J. Huang
- b Laboratory of Atomic Imaging of Solids, Institute of Metal Research , Chinese Academy of Sciences, Shenyang , 110015 , China
| | - H. Bengs
- c Institute of Organic Chemistry, University of Mainz , J-J-Becher-Weg 18-20, D-55099 , Mainz , Germany
| | - H. Ringsdorf
- c Institute of Organic Chemistry, University of Mainz , J-J-Becher-Weg 18-20, D-55099 , Mainz , Germany
| |
Collapse
|
8
|
Paleos CM, Tsiourvas D, Fillipakis S, Fillipaki L. Mesomorphic Character of Some Long-Chain 2,4,6-Trichloro-1,3,5-Triazine Derivatives Susceptible to Facile Functionalization. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259408037735] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- C. M. Paleos
- a NRC “Demokritos” , 15310 , Aghia Paraskevi , Attiki , Greece
| | - D. Tsiourvas
- a NRC “Demokritos” , 15310 , Aghia Paraskevi , Attiki , Greece
| | - S. Fillipakis
- a NRC “Demokritos” , 15310 , Aghia Paraskevi , Attiki , Greece
| | - L. Fillipaki
- a NRC “Demokritos” , 15310 , Aghia Paraskevi , Attiki , Greece
| |
Collapse
|
9
|
|
10
|
Praefcke K, Bilgin B, Pickardt J, Borowski M. Liquid-crystalline Compounds, 86. The First Disc-Shaped Dinuclear Platinum Mesogen. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/cber.19941270832] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|