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Uemura K, Nakajima G, Marui M, Kondo M, Sakamoto M, Sasaki T, Suzuki M, Ono H, Kawatsuki N. Birefringence and Orientation Direction Control of Photoalignable Liquid Crystalline Copolymer Films Based on In Situ Modification of Mesogenic Groups. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:15271-15280. [PMID: 38989905 DOI: 10.1021/acs.langmuir.4c01821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
Controlling the birefringence of optical films is imperative to fabricate thin birefringent optical devices. Here, new photoalignable liquid crystalline copolymers (PLCPs) with 4-formylphneyl benzoate (PA) and cinnamic acid (CA) side groups are synthesized, which attain high photoreactivity and controllability of the orientation direction. Additionally, the exposed films are treated with 2-aminofluorene (AF) for an in situ condensation of PA with AF to form a Schiff base with a high inherent birefringence. Birefringence of the photoaligned film can be controlled up to 0.45 without disturbing the photoinduced orientation structure.
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Affiliation(s)
- Keigo Uemura
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2188 Shosha, Himeji 671-2280, Japan
| | - Gento Nakajima
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2188 Shosha, Himeji 671-2280, Japan
| | - Madoka Marui
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2188 Shosha, Himeji 671-2280, Japan
| | - Mizuho Kondo
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2188 Shosha, Himeji 671-2280, Japan
| | - Moritsugu Sakamoto
- Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188, Japan
| | - Tomoyuki Sasaki
- Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188, Japan
| | - Masato Suzuki
- Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188, Japan
| | - Hiroshi Ono
- Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188, Japan
| | - Nobuhiro Kawatsuki
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2188 Shosha, Himeji 671-2280, Japan
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Kondo M, Morita Y, Nishida JI, Kawase T, Kawatsuki N. Mechano-induced photoluminescence colour change in an alkyltolane-terminated cyanostilbene. CrystEngComm 2021. [DOI: 10.1039/d1ce00456e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A novel alkyltolane-terminated cyanostilbene is synthesized. The photoluminescence colour changed depending on the precipitation method, with either a red shift or blue shift in the photoluminescence spectra observed upon mechanical grinding.
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Affiliation(s)
- Mizuho Kondo
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan
| | - Yuya Morita
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan
| | - Jun-ichi Nishida
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan
| | - Takeshi Kawase
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan
| | - Nobuhiro Kawatsuki
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji 671-2280, Japan
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3
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Sapegin A, Krasavin M. One-Pot Conversion of Aldehydes and Aryl Halides to Disubstituted Alkynes via Tandem Seyferth–Gilbert Homologation/Copper-Free Sonogashira Coupling. J Org Chem 2019; 84:8788-8795. [DOI: 10.1021/acs.joc.9b01367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg 199034, Russia
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4
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Arakawa Y, Konishi GI. Development of High-Birefringence Liquid Crystals for Future Optical Materials. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.1076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yuki Arakawa
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology
| | - Gen-ichi Konishi
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology
- Department of Chemical Science and Engineering, Tokyo Institute of Technology
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5
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Kim S, Ishii S, Yagi R, Kuwahara Y, Ogata T, Kurihara S. Photo-induced orientation behaviors of azobenzene liquid crystal copolymers for photonic crystals. RSC Adv 2017. [DOI: 10.1039/c7ra07160d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Light response inside is improved by decrease of light absorption near surface based on LC cooperative orientation.
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Affiliation(s)
- Sunnam Kim
- Graduate School of Science and Technology
- Kumamoto 860-8555
- Japan
| | - Shunsuke Ishii
- Graduate School of Science and Technology
- Kumamoto 860-8555
- Japan
| | - Ryohei Yagi
- Graduate School of Science and Technology
- Kumamoto 860-8555
- Japan
| | - Yutaka Kuwahara
- Graduate School of Science and Technology
- Kumamoto 860-8555
- Japan
- JST-CREST
- Tokyo 102-0076
| | - Tomonari Ogata
- Innovative Collaboration Organic Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Seiji Kurihara
- Graduate School of Science and Technology
- Kumamoto 860-8555
- Japan
- Kumamoto Institute for PHOTO-Organics (PHOENICS)
- Kumamoto
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6
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Reddy SR, Chadha A. A simple and efficient method for mild and selective oxidation of propargylic alcohols using TEMPO and calcium hypochlorite. RSC Adv 2013. [DOI: 10.1039/c3ra41721b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Yan H, Lim SI, Zhang LC, Gao SC, Mott D, Le Y, Loukrakpam R, An DL, Zhong CJ. Rigid, conjugated and shaped arylethynes as mediators for the assembly of gold nanoparticles. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02772c] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Synthesis and spectroscopic study of phenylene–(poly)ethynylenes substituted by amino or amino/cyano groups at terminal(s): electronic effect of cyano group on charge-transfer excitation of acetylenic π-systems. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.05.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Photoinduced reorientation and polarization holography in photo-cross-linkable liquid crystalline polymer films with large birefringence. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.04.043] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Synthesis and spectroscopic study of diphenylamino-substituted phenylene-(poly)ethynylenes: remarkable effect of acetylenic conjugation modes. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2009.12.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Kawatsuki N, Yamashita A, Kondo M, Ono H, Emoto A. Photoinduced Reorientation and Polarization Holography of Photoreactive Polymer Liquid Crystals with Bistolane Side Groups. J PHOTOPOLYM SCI TEC 2010. [DOI: 10.2494/photopolymer.23.343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Kawatsuki N, Yamashita A, Fujii Y, Kitamura C, Yoneda A. Thermally Enhanced Photoinduced Reorientation in Photo-Cross-Linkable Liquid Crystalline Polymers Comprised of Cinnamate and Tolane Mesogenic Groups. Macromolecules 2008. [DOI: 10.1021/ma802026b] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nobuhiro Kawatsuki
- Department of Materials Science and Chemistry, Himeji Institute of Technology, University of Hyogo, 2167 Shosha Himeji 671-2280, Japan
| | - Ayumi Yamashita
- Department of Materials Science and Chemistry, Himeji Institute of Technology, University of Hyogo, 2167 Shosha Himeji 671-2280, Japan
| | - Yasuhito Fujii
- Department of Materials Science and Chemistry, Himeji Institute of Technology, University of Hyogo, 2167 Shosha Himeji 671-2280, Japan
| | - Chitoshi Kitamura
- Department of Materials Science and Chemistry, Himeji Institute of Technology, University of Hyogo, 2167 Shosha Himeji 671-2280, Japan
| | - Akio Yoneda
- Department of Materials Science and Chemistry, Himeji Institute of Technology, University of Hyogo, 2167 Shosha Himeji 671-2280, Japan
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Blangetti M, Deagostino A, Rosso H, Prandi C, Zavattaro C, Venturello P. Rapid and Easy Access to (E)-1,3-Enynes, 1,3-Diynes and Allenes Starting from Propargylic Acetals, Exploiting the Different Reactivity of Lithium and Mixed Lithium–Potassium Organometallic Reagents. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700520] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Shao G, Orita A, Nishijima K, Ishimaru K, Takezaki M, Wakamatsu K, Gleiter R, Otera J. Synthesis and Spectroscopic Studies of Arylethynylsilanes. Chem Asian J 2007; 2:489-98. [PMID: 17441186 DOI: 10.1002/asia.200700007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A variety of arylethynylsilanes (Ar-C[triple bond]C-C6H4-C[triple bond]C)(n)SiMe(4-n) were prepared successfully by reaction of the corresponding chlorosilanes Me(4-n)SiCl(n) with Ar-C[triple bond]C-C6H4-C[triple bond]CM (M = Li, MgBr), which was prepared by treatment of ethynyl(diarylethyne)s Ar-C[triple bond]C-C6H4-C[triple bond]CH with BuLi or MeMgBr. The ethynyl(diarylethyne)s were readily prepared in good yields by the double-elimination method: addition of lithium hexamethyldisilazide to a mixture of ArCH2SO2Ph, TMS-C[triple bond]C-C6H4-CHO, and ClP(O)(OEt)2, followed by desilylation. In the tetrakis(arylethynyl)silanes (Ar-C[triple bond]C-C6H4-C[triple bond]C)4Si thus prepared, through-space conjugation of four triple bonds on the silicon atom emerges as a result of participation of the silicon orbitals in the acetylenic pi orbitals. This participation enhances the emissive quantum yields of arylethynylsilanes with an increase in the number of arylethynyl moieties on silicon: quantum yields of emission (phiF) of 0.72 for (MeOC6H4-C[triple bond]C-C6H4-C[triple bond]C)4Si, 0.53 for (MeOC6H4-C[triple bond]C-C6H4-C[triple bond]C)2SiMe2, and 0.47 for MeO-C6H4-C[triple bond]C-C6H4-C[triple bond]CSiMe3 were obtained. Although this enhancement effect was also observed in the phenylethynylarylsilane (MeOC6H4-C[triple bond]C-C6H4)2SiMe2, the bis(arylethynyl)disilane (MeOC6H4-C[triple bond]C-C6H4-C[triple bond]C-SiMe2)2 exhibited non-enhanced emission.
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Affiliation(s)
- Guang Shao
- Department of Applied Chemistry, Okayama University of Science, Ridai-cho, Okayama 700-0005, Japan
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Métay E, Hu Q, Negishi EI. Highly efficient and selective synthesis of conjugated triynes and higher oligoynes of biological and materials chemical interest via palladium-catalyzed alkynyl-alkenyl coupling. Org Lett 2006; 8:5773-6. [PMID: 17134269 PMCID: PMC3891648 DOI: 10.1021/ol0623825] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Iteration of a Pd-catalyzed reaction of alkynyl- and oligoynylzincs with (E)-ICH=CHCl followed by metalation-termination with electrophiles(E) has provided a linear route to conjugated tri- and tetraynes, and Pd-catalyzed monoalkynylation of 1,1-dibromoenynes accompanied by dehydrobromination has provided a convergent route to conjugated tri- , tetra- , and pentaynes. Both display unprecedented high efficiency and selectivity. [reaction: see text]
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Affiliation(s)
- Estelle Métay
- Herbert C. Brown Laboratories of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2084
| | - Qian Hu
- Herbert C. Brown Laboratories of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2084
| | - Ei-ichi Negishi
- Herbert C. Brown Laboratories of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2084
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Orita A, Taniguchi H, Otera J. One-Shot Double Elimination Process: A Practical and Concise Protocol for Diaryl Acetylenes. Chem Asian J 2006; 1:430-7. [PMID: 17441079 DOI: 10.1002/asia.200600073] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A variety of diaryl acetylenes were obtained in good yields when lithium hexamethyldisilazide was added to a solution of arylmethyl sulfone, aryl aldehyde, and chlorodiethylphosphate in THF. In this one-shot process, a number of transformations such as aldol reaction, phosphorylation of aldolate, and double elimination of the resulting beta-substituted sulfone proceeded successively to afford the desired acetylenes. The one-shot process was accelerated by the substitution of halogen atoms on the phenyl groups, and unsymmetrically substituted diaryl acetylenes were obtained without contamination of the dehalogenated products. Diaryl acetylenes with other substituents such as CF3, ethoxycarbonyl, dimethylamino, TMS-acetylene groups, as well as pyridinyl and thienyl moieties were also accessible with this method. However, methoxy-substituted compounds were obtained in moderate yields under the same conditions, but the yields were increased when lithium diisopropylamide was used instead.
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Affiliation(s)
- Akihiro Orita
- Department of Applied Chemistry, Okayama University of Science, Ridai-cho, Okayama 700-0005, Japan.
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17
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Affiliation(s)
- Akihiro Orita
- Department of Applied Chemistry, Okayama University of Science, Ridai-cho, Okayama 700-005, Japan
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18
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Kawatsuki N, Fujii Y, Kitamura C, Yoneda A. Photoinduced Orientation in Photo-cross-linkable Liquid Crystalline Polymer Film Containing Tolane Moiety. CHEM LETT 2006. [DOI: 10.1246/cl.2006.52] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Chalifoux WA, Tykwinski RR. Polyyne synthesis using carbene/carbenoid rearrangements. CHEM REC 2006; 6:169-82. [PMID: 16902994 DOI: 10.1002/tcr.20081] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Rearrangement of a carbene/carbenoid intermediate to form an acetylene moiety, known as the Fritsch-Buttenberg-Wiechell (FBW) rearrangement, was developed for the formation of polyynes and polyyne frameworks within highly conjugated organic materials. Necessary precursors can be prepared through formation of an alkynyl ketone, followed by dibromoolefination under Corey-Fuchs conditions. The carbenoid rearrangement is brought about by treatment of the dibromoolefin with BuLi under mild conditions. The success of these FBW reactions is quite solvent-dependent, and nonpolar hydrocarbon solvents (e.g., hexanes, toluene, benzene) work quite well, while use of ethereal solvents such as diethyl ether and tetrahydrofuran (THF) does not provide the desired polyyne product. This protocol was successfully applied to the formation of silyl, alkyl, alkenyl, and aryl polyynes, including di-, tri-, and tetrayne products, as well as the construction of two-dimensional carbon-rich molecules. A one-pot variant of this procedure is being developed and is particularly applicable toward the synthesis of polyyne natural products. Formation of a series of triisopropylsilyl end-capped polyynes, from the triyne to decayne, was achieved. Third-order nonlinear optical properties of these polyynes were evaluated. This study shows that the molecular second hyperpolarizabilities for the polyynes as a function of length increase at a rate that is higher than all other nonaromatic organic oligomers.
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Affiliation(s)
- Wesley A Chalifoux
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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