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Onaka Y, Sakai R, Fukunaga TM, Ikemoto K, Isobe H. Bayesian Inference for Model Analyses of Supramolecular Complexes: A Case Study with Nanocarbon Hosts. Angew Chem Int Ed Engl 2024; 63:e202405388. [PMID: 38580617 DOI: 10.1002/anie.202405388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/05/2024] [Accepted: 04/05/2024] [Indexed: 04/07/2024]
Abstract
A 126 π-electron nanobowl molecule, phenine tridehydrosumanene, was synthesized in 12 steps through the development of a polygon cyclization strategy that assembled the polygonal precursors by Ni-mediated macrocyclization. The bowl-shaped structure accommodated C70 as a guest at the concave site, and the ball-in-bowl structure was determined by X-ray crystallography. The host-guest equilibrium in solution was studied with titration experiments using isothermal calorimetry, which provided an interesting test case for studying the host-guest stoichiometry. Bayesian inference was introduced for stoichiometric analyses of the equilibrium, and a procedure to estimate the volume of prior probability in the parameter space was developed. The Bayesian procedure functioned as Occam's razor and provided quantitative support for a specific stoichiometry. The method was examined with five host-guest examples comprising nanocarbon hosts, which suggested the versatility of Bayesian inference for studies of supramolecular complexes.
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Affiliation(s)
- Yuzuka Onaka
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Renki Sakai
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Toshiya M Fukunaga
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Koki Ikemoto
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hiroyuki Isobe
- Department of Chemistry, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
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Berndt D, Glaap D, Jennings T, Dose C, Werz DB, Reckert DNH. Water-Soluble Fluorescent Polymer Dyes with Tunable Emission Spectra for Flow Cytometry Applications. Angew Chem Int Ed Engl 2024; 63:e202402616. [PMID: 38488317 DOI: 10.1002/anie.202402616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Indexed: 04/04/2024]
Abstract
The application of spectrally unique, bright, and water-soluble fluorescent dyes is indispensable for the analysis of biological systems. Multiparameter flow cytometry is a powerful tool for characterization of mixed cell populations. To discriminate the different cell populations, they are typically stained by a set of fluorescent reagents, e.g., antibody-fluorophore conjugates. The number of parameters which can be studied simultaneously strongly depends on the availability of reagents which can be differentiated by their spectral properties. In this study a series of fluorescent polymer dyes was developed, that can be excited with a single violet laser (405 nm) but distinguished by their unique emission spectra. The polyfluorene-based polymers can be used on their own, or in combination with covalently bound small-molecule dyes to generate energy transfer constructs to red-shift the emission wavelength based on Förster resonance energy transfer (FRET). The polymer dyes were utilized in a biological flow cytometry assay by conjugating several of them to antibodies, demonstrating their effectiveness as reagents. This report represents the first systematic investigation of structure-property relationships for this type of fluorescent dyes.
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Affiliation(s)
- Daniel Berndt
- Miltenyi Biotec BV & Co. KG, Department Chemical Biology, Friedrich-Ebert-Str. 68, 51429, Bergisch Gladbach, Germany
- DFG Cluster of Excellence livMatS @FIT and Albert-Ludwigs-Universität Freiburg, Institut für Organische Chemie, Albertstraße 21, 79104, Freiburg, Germany
| | - Dorina Glaap
- Miltenyi Biotec BV & Co. KG, Department Chemical Biology, Friedrich-Ebert-Str. 68, 51429, Bergisch Gladbach, Germany
| | - Travis Jennings
- Miltenyi Biotec BV & Co. KG, Department Chemical Biology, Friedrich-Ebert-Str. 68, 51429, Bergisch Gladbach, Germany
| | - Christian Dose
- Miltenyi Biotec BV & Co. KG, Department Chemical Biology, Friedrich-Ebert-Str. 68, 51429, Bergisch Gladbach, Germany
| | - Daniel B Werz
- DFG Cluster of Excellence livMatS @FIT and Albert-Ludwigs-Universität Freiburg, Institut für Organische Chemie, Albertstraße 21, 79104, Freiburg, Germany
| | - Dirk N H Reckert
- Miltenyi Biotec BV & Co. KG, Department Chemical Biology, Friedrich-Ebert-Str. 68, 51429, Bergisch Gladbach, Germany
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Rahman MF, Fujisawa I, Haraguchi N, Itsuno S. Synthesis of cinchona urea polymers using Yamamoto coupling and their application to asymmetric reaction. Chirality 2023; 35:178-188. [PMID: 36625735 DOI: 10.1002/chir.23526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/08/2022] [Accepted: 12/20/2022] [Indexed: 01/11/2023]
Abstract
Cinchona urea compounds having 3,5-diiodophenyl moieties were subjected to Yamamoto coupling polymerization to afford the chiral urea polymers. These polymers showed high activities as heterogeneous catalysts in asymmetric Michael reactions comparable with those of the corresponding monomeric catalyst in solution systems. Furthermore, the polymeric catalysts are easily recovered from their reaction mixtures due to their insolubility and can be reused several times without loss of catalytic activity.
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Affiliation(s)
| | - Ikuhide Fujisawa
- Applied Chemistry and Life Science, Toyohashi University of Technology, Toyohashi, Japan
| | - Naoki Haraguchi
- Applied Chemistry and Life Science, Toyohashi University of Technology, Toyohashi, Japan
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Omachi H, Segawa Y, Itami K. Synthesis of cycloparaphenylenes and related carbon nanorings: a step toward the controlled synthesis of carbon nanotubes. Acc Chem Res 2012; 45:1378-89. [PMID: 22587963 DOI: 10.1021/ar300055x] [Citation(s) in RCA: 303] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Since their discovery in 1991, carbon nanotubes (CNTs) have attracted significant attention because of their remarkable mechanical, electronic, and optical properties. Structural uniformity of the CNT is critically important because the sidewall structures (armchair, zigzag, and chiral) determine many of the significant properties of CNTs. Ideally researchers would synthesize CNTs with a defined target sidewall structure and diameter, but the current synthetic methods, such as arc discharge and chemical vapor deposition, only provide CNTs as the mixtures of various structures. Purification of these mixtures does not allow researchers to isolate a structurally uniform CNT, which is the bottleneck for fundamental studies and advanced applications of these materials. Therefore, the selective and predictable synthesis of structurally uniform CNTs would represent a critical advance in both nanocarbon science and synthetic chemistry. This Account highlights our efforts toward the bottom-up synthesis of structurally uniform carbon nanotubes (CNTs). We envisioned a bottom-up synthesis of structurally uniform CNTs through a controlled growth process from a short carbon nanoring (template) that corresponds to the target structure of CNTs. Our simple retrosynthetic analysis led to the identification of cycloparaphenylenes (CPPs), acene-inserted CPPs, and cyclacenes as the shortest sidewall segments of armchair, chiral, and zigzag CNTs, respectively. With this overall picture in mind, we initiated our synthetic studies of aromatic rings/belts as an initial step toward structurally uniform CNTs in 2005. This research has led to (i) a general strategy for the synthesis of CPPs and related carbon nanorings using cyclohexane derivatives as a benzene-convertible L-shaped unit, (ii) a modular, size-selective, and scalable synthesis of [n]CPPs (a shortest segment of armchair CNTs), (iii) the X-ray crystal structure analysis of CPPs, (iv) the design and synthesis of acene-inserted CPPs as the shortest segment of chiral CNTs, and (v) the first synthesis of cyclo-1,4-naphthylene, a π-extended CPP. We believe this work will serve as important initial steps toward a controlled synthesis of CNTs.
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Affiliation(s)
- Haruka Omachi
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Yasutomo Segawa
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
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Yagi A, Segawa Y, Itami K. Synthesis and Properties of [9]Cyclo-1,4-naphthylene: A π-Extended Carbon Nanoring. J Am Chem Soc 2012; 134:2962-5. [DOI: 10.1021/ja300001g] [Citation(s) in RCA: 158] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Akiko Yagi
- Department
of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Yasutomo Segawa
- Department
of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Department
of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
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Rosen BM, Quasdorf KW, Wilson DA, Zhang N, Resmerita AM, Garg NK, Percec V. Nickel-catalyzed cross-couplings involving carbon-oxygen bonds. Chem Rev 2011; 111:1346-416. [PMID: 21133429 PMCID: PMC3055945 DOI: 10.1021/cr100259t] [Citation(s) in RCA: 1120] [Impact Index Per Article: 86.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Brad M. Rosen
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104–6323
| | - Kyle W. Quasdorf
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095
| | - Daniella A. Wilson
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104–6323
| | - Na Zhang
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104–6323
| | - Ana-Maria Resmerita
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104–6323
| | - Neil K. Garg
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104–6323
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Segawa Y, Miyamoto S, Omachi H, Matsuura S, Šenel P, Sasamori T, Tokitoh N, Itami K. Concise Synthesis and Crystal Structure of [12]Cycloparaphenylene. Angew Chem Int Ed Engl 2011; 50:3244-8. [DOI: 10.1002/anie.201007232] [Citation(s) in RCA: 209] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Indexed: 11/09/2022]
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8
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Segawa Y, Miyamoto S, Omachi H, Matsuura S, Šenel P, Sasamori T, Tokitoh N, Itami K. Concise Synthesis and Crystal Structure of [12]Cycloparaphenylene. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007232] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Adeloye AO, Ajibade PA. Synthesis and characterization of a heteroleptic Ru(II) complex of phenanthroline containing oligo-anthracenyl carboxylic acid moieties. Int J Mol Sci 2010; 11:3158-76. [PMID: 20957086 PMCID: PMC2956087 DOI: 10.3390/ijms11093158] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2010] [Revised: 08/12/2010] [Accepted: 08/12/2010] [Indexed: 11/16/2022] Open
Abstract
In an effort to develop new ruthenium(II) complexes, this work describes the design, synthesis and characterization of a ruthenium(II) functionalized phenanthroline complex with extended π-conjugation. The ligand were L(1) (4,7-bis(2,3-dimethylacrylic acid)-1,10-phenanthroline), synthesized by a direct aromatic substitution reaction, and L(2) (4,7-bis(trianthracenyl-2,3-dimethylacrylic acid)-1,10-phenanthroline), which was synthesized by the dehalogenation of halogenated aromatic compounds using a zero-valent palladium cross-catalyzed reaction in the absence of magnesium-diene complexes and/or cyclooctadienyl nickel (0) catalysts to generate a new carbon-carbon bond (C-C bond) polymerized hydrocarbon units. The ruthenium complex [RuL(1)L(2)(NCS)(2)] showed improved photophysical properties (red-shifted metal-to-ligand charge-transfer transition absorptions and enhanced molar extinction coefficients), luminescence and interesting electrochemical properties. Cyclic and square wave voltammetry revealed five major redox processes. The number of electron(s) transferred by the ruthenium complex was determined by chronocoulometry in each case. The results show that processes I, II and III are multi-electron transfer reactions while processes IV and V involved one-electron transfer reaction. The photophysical property of the complex makes it a promising candidate in the design of chemosensors and photosensitizers, while its redox-active nature makes the complex a potential mediator of electron transfer in photochemical processes.
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Affiliation(s)
- Adewale O Adeloye
- Department of Chemistry, Faculty of Science and Agriculture, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa; E-Mail:
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Intaniwet A, Mills CA, Sellin PJ, Shkunov M, Keddie JL. Achieving a stable time response in polymeric radiation sensors under charge injection by X-rays. ACS APPLIED MATERIALS & INTERFACES 2010; 2:1692-1699. [PMID: 20496869 DOI: 10.1021/am100220y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Existing inorganic materials for radiation sensors suffer from several drawbacks, including their inability to cover large curved areas, lack of tissue-equivalence, toxicity, and mechanical inflexibility. As an alternative to inorganics, poly(triarylamine) (PTAA) diodes have been evaluated for their suitability for detecting radiation via the direct creation of X-ray induced photocurrents. A single layer of PTAA is deposited on indium tin oxide (ITO) substrates, with top electrodes selected from Al, Au, Ni, and Pd. The choice of metal electrode has a pronounced effect on the performance of the device; there is a direct correlation between the diode rectification factor and the metal-PTAA barrier height. A diode with an Al contact shows the highest quality of rectifying junction, and it produces a high X-ray photocurrent (several nA) that is stable during continuous exposure to 50 kV Mo Kalpha X-radiation over long time scales, combined with a high signal-to-noise ratio with fast response times of less than 0.25 s. Diodes with a low band gap, 'Ohmic' contact, such as ITO/PTAA/Au, show a slow transient response. This result can be explained by the build-up of space charge at the metal-PTAA interface, caused by a high level of charge injection due to X-ray-induced carriers. These data provide new insights into the optimum selection of metals for Schottky contacts on organic materials, with wider applications in light sensors and photovoltaic devices.
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Affiliation(s)
- Akarin Intaniwet
- Department of Physics and Advanced Technology Institute, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
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12
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Yamamoto T. Synthesis of π-Conjugated Polymers by Organometallic Polycondensation. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20090338] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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13
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Synthesis and electroluminescence properties of carbazole-containing 2,6-naphthalene-based conjugated polymers. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2008.12.042] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Grimsdale AC, Leok Chan K, Martin RE, Jokisz PG, Holmes AB. Synthesis of Light-Emitting Conjugated Polymers for Applications in Electroluminescent Devices. Chem Rev 2009; 109:897-1091. [PMID: 19228015 DOI: 10.1021/cr000013v] [Citation(s) in RCA: 1718] [Impact Index Per Article: 114.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrew C. Grimsdale
- School of Chemistry, Bio21 Institute, University of Melbourne, 30 Flemington Road, Victoria 3010, Australia; School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Republic of Singapore 639798; Institute of Materials Research and Engineering (IMRE) and the Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602; and F. Hoffmann-La Roche Ltd., Pharmaceuticals Division, Discovery Chemistry, CH-4070 Basel, Switzerland
| | - Khai Leok Chan
- School of Chemistry, Bio21 Institute, University of Melbourne, 30 Flemington Road, Victoria 3010, Australia; School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Republic of Singapore 639798; Institute of Materials Research and Engineering (IMRE) and the Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602; and F. Hoffmann-La Roche Ltd., Pharmaceuticals Division, Discovery Chemistry, CH-4070 Basel, Switzerland
| | - Rainer E. Martin
- School of Chemistry, Bio21 Institute, University of Melbourne, 30 Flemington Road, Victoria 3010, Australia; School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Republic of Singapore 639798; Institute of Materials Research and Engineering (IMRE) and the Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602; and F. Hoffmann-La Roche Ltd., Pharmaceuticals Division, Discovery Chemistry, CH-4070 Basel, Switzerland
| | - Pawel G. Jokisz
- School of Chemistry, Bio21 Institute, University of Melbourne, 30 Flemington Road, Victoria 3010, Australia; School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Republic of Singapore 639798; Institute of Materials Research and Engineering (IMRE) and the Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602; and F. Hoffmann-La Roche Ltd., Pharmaceuticals Division, Discovery Chemistry, CH-4070 Basel, Switzerland
| | - Andrew B. Holmes
- School of Chemistry, Bio21 Institute, University of Melbourne, 30 Flemington Road, Victoria 3010, Australia; School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, Republic of Singapore 639798; Institute of Materials Research and Engineering (IMRE) and the Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602; and F. Hoffmann-La Roche Ltd., Pharmaceuticals Division, Discovery Chemistry, CH-4070 Basel, Switzerland
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Mori T, Kijima M. Synthesis and optical properties of blue luminescent poly(2,6-naphthalene)s. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22767] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Yamamoto T, Koizumi TA. Synthesis of π-conjugated polymers bearing electronic and optical functionalities by organometallic polycondensations and their chemical properties. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.07.051] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Imit M, Yamamoto T, Imin P. Influence of surfactant concentration on counter-ion induced solubility of poly(pyridine-2,5-diyl). J Zhejiang Univ Sci B 2005; 6:365-8. [PMID: 15822148 PMCID: PMC1389751 DOI: 10.1631/jzus.2005.b0365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Protonating the pyridine rings of poly(pyridine-2,5-diyl) with dodecybenzenesulfonic acid and camphorsulphonic acid produces polymer materials which can be dissolved in chloroform (in contrast to the unprotonated polymer, which can only be dissolved in strong acids such as formic acid) and allows mixing the protonated polymers with other chloroform soluble conjugated polymers for use in electronic devices. The protonating behavior of poly(pyridine-2,5-diyl) with two kinds of surfactants is different in some levels. Dodecybenzenesulfonic acid has higher protonating ability than camphorsulphonic acid.
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Affiliation(s)
- Mokhtar Imit
- School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China.
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18
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Cheng YJ, Luh TY. Synthesizing optoelectronic heteroaromatic conjugated polymers by cross-coupling reactions. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.08.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Revesz L, Blum E, Di Padova FE, Buhl T, Feifel R, Gram H, Hiestand P, Manning U, Rucklin G. SAR of benzoylpyridines and benzophenones as p38α MAP kinase inhibitors with oral activity. Bioorg Med Chem Lett 2004; 14:3601-5. [PMID: 15177483 DOI: 10.1016/j.bmcl.2004.03.111] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2004] [Revised: 03/22/2004] [Accepted: 03/29/2004] [Indexed: 11/26/2022]
Abstract
Benzoylpyridines and benzophenones were synthesized and evaluated in vitro as p38alpha inhibitors and in vivo in several models of rheumatoid arthritis. Oral activity was found to depend upon substitution: 1,1-dimethylpropynylamine substituted benzophenone 10b (IC50: 14 nM) and pyridinoyl substituted benzimidazole 17b (IC50: 21 nM) showed highest efficacy and selectivity with ED50s of 9.5 and 8.6 mg/kg p.o. in CIA.
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Affiliation(s)
- Laszlo Revesz
- Novartis Institutes for BioMedical Research, Arthritis and Bone Metabolism, CH-4002 Basel, Switzerland.
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Yamamoto T, Saitoh Y, Anzai K, Fukumoto H, Yasuda T, Fujiwara Y, Choi BK, Kubota K, Miyamae T. Poly(1,10-phenanthroline-3,8-diyl) and Its Derivatives. Preparation, Optical and Electrochemical Properties, Solid Structure, and Their Metal Complexes. Macromolecules 2003. [DOI: 10.1021/ma0302659] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Takakazu Yamamoto
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, Faculty of Engineering, Gunma University, Tenjincho, Kiryu 376-8515, Japan, and Institute of Molecular Science, Okazaki 444-8585, Japan
| | - Yutaka Saitoh
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, Faculty of Engineering, Gunma University, Tenjincho, Kiryu 376-8515, Japan, and Institute of Molecular Science, Okazaki 444-8585, Japan
| | - Kazushige Anzai
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, Faculty of Engineering, Gunma University, Tenjincho, Kiryu 376-8515, Japan, and Institute of Molecular Science, Okazaki 444-8585, Japan
| | - Hiroki Fukumoto
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, Faculty of Engineering, Gunma University, Tenjincho, Kiryu 376-8515, Japan, and Institute of Molecular Science, Okazaki 444-8585, Japan
| | - Takuma Yasuda
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, Faculty of Engineering, Gunma University, Tenjincho, Kiryu 376-8515, Japan, and Institute of Molecular Science, Okazaki 444-8585, Japan
| | - Yoshiki Fujiwara
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, Faculty of Engineering, Gunma University, Tenjincho, Kiryu 376-8515, Japan, and Institute of Molecular Science, Okazaki 444-8585, Japan
| | - Byoung-Ki Choi
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, Faculty of Engineering, Gunma University, Tenjincho, Kiryu 376-8515, Japan, and Institute of Molecular Science, Okazaki 444-8585, Japan
| | - Kenji Kubota
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, Faculty of Engineering, Gunma University, Tenjincho, Kiryu 376-8515, Japan, and Institute of Molecular Science, Okazaki 444-8585, Japan
| | - Takayuki Miyamae
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, Faculty of Engineering, Gunma University, Tenjincho, Kiryu 376-8515, Japan, and Institute of Molecular Science, Okazaki 444-8585, Japan
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Yamamoto T, Uemura T, Tanimoto A, Sasaki S. Synthesis and Chemical Properties of π-Conjugated Poly(imidazole-2,5-diyl)s. Macromolecules 2003. [DOI: 10.1021/ma0211232] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Takakazu Yamamoto
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, and Japan Advanced Institue of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa, 923-1292, Japan
| | - Takashi Uemura
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, and Japan Advanced Institue of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa, 923-1292, Japan
| | - Akitoshi Tanimoto
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, and Japan Advanced Institue of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa, 923-1292, Japan
| | - Shintaro Sasaki
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, and Japan Advanced Institue of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa, 923-1292, Japan
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Mori T, Fujishima D, Hosoi K, Mizutani T, Yamamoto T, Kitamura N. Effect of Low-Molecular Component on Electroluminescent Properties of Polyfluorene Derivative. J PHOTOPOLYM SCI TEC 2003. [DOI: 10.2494/photopolymer.16.317] [Citation(s) in RCA: 3] [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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23
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24
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25
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Yamamoto T, Kimura T, Shiraishi K. Preparation of π-Conjugated Polymers Composed of Hydroquinone, p-Benzoquinone, and p-Diacetoxyphenylene Units. Optical and Redox Properties of the Polymers. Macromolecules 1999. [DOI: 10.1021/ma9907946] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takakazu Yamamoto
- Research Laboratory of Resources Utilization, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Tohru Kimura
- Research Laboratory of Resources Utilization, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Kouichi Shiraishi
- Research Laboratory of Resources Utilization, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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Preparation of new main-chain type poly(anthraquinone)s having alkoxyl groups and their liquid crystalline behaviour. POLYMER 1999. [DOI: 10.1016/s0032-3861(99)00229-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Yamamoto T, Hayashida N. π-Conjugated polymers bearing electronic and optical functionalities. Preparation, properties and their applications. REACT FUNCT POLYM 1998. [DOI: 10.1016/s1381-5148(97)00140-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Umemoto T, Nagayoshi M, Adachi K, Tomizawa G. Synthesis, Properties, and Reactivity of N,N‘-Difluorobipyridinium and Related Salts and Their Applications as Reactive and Easy-To-Handle Electrophilic Fluorinating Agents with High Effective Fluorine Content1. J Org Chem 1998. [DOI: 10.1021/jo972338q] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Teruo Umemoto
- MEC Laboratory, Daikin Industries, Ltd., Miyukigaoka 3, Tsukuba, Ibaraki 305-0841, Japan
| | - Masayuki Nagayoshi
- MEC Laboratory, Daikin Industries, Ltd., Miyukigaoka 3, Tsukuba, Ibaraki 305-0841, Japan
| | - Kenji Adachi
- MEC Laboratory, Daikin Industries, Ltd., Miyukigaoka 3, Tsukuba, Ibaraki 305-0841, Japan
| | - Ginjiro Tomizawa
- MEC Laboratory, Daikin Industries, Ltd., Miyukigaoka 3, Tsukuba, Ibaraki 305-0841, Japan
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Kim SB, Harada K, Yamamoto T. Preparation of Poly(diphenylamine-4,4‘-diyl) and Related Random Copolymers by Organometallic Polycondensation. Electrical, Electrochemical, and Optical Properties. Macromolecules 1998. [DOI: 10.1021/ma971244f] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sang-Bum Kim
- Research Laboratory of Resources Utilization, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226, Japan
| | - Ken Harada
- Research Laboratory of Resources Utilization, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226, Japan
| | - Takakazu Yamamoto
- Research Laboratory of Resources Utilization, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226, Japan
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Feast W, Tsibouklis J, Pouwer K, Groenendaal L, Meijer E. Synthesis, processing and material properties of conjugated polymers. POLYMER 1996. [DOI: 10.1016/0032-3861(96)00439-9] [Citation(s) in RCA: 248] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Yanagida S, Ogata T, Kuwana Y, Wada Y, Murakoshi K, Ishida A, Takamuku S, Kusaba M, Nakashima N. Synthesis of 2,′:5′,2″-terpyridine and 2,2′:5′,2″:5″,2‴-quaterpyridine and their photocatalysis of the reduction of water. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/p29960001963] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Miyazaki Y, Kanbara T, Osakada K, Yamamoto T, Kubota K. A New Type of Poly(thiophene-2,5-diyl) Having a Crown Ethereal Subunit. Strong Interaction of the Subunit with Cationic Dopants to Exhibit Unique Doping-Undoping Behavior. Polym J 1994. [DOI: 10.1295/polymj.26.509] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Yamamoto T, Takagi M, Kizu K, Maruyama T, Kubota K, Kanbara H, Kurihara T, Kaino T. Preparation and optical properties of soluble π-conjugated poly(aryleneethynylene) type polymers. ACTA ACUST UNITED AC 1993. [DOI: 10.1039/c39930000797] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Yamamoto T, Wakabayashi S, Osakada K. Mechanism of CC coupling reactions of aromatic halides, promoted by Ni(COD)2 in the presence of 2,2′-bipyridine and PPh3, to give biaryls. J Organomet Chem 1992. [DOI: 10.1016/0022-328x(92)83232-7] [Citation(s) in RCA: 170] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Yamamoto T. Electrically conducting and thermally stable π-conjugated poly(arylene)s prepared by organometallic processes. Prog Polym Sci 1992. [DOI: 10.1016/0079-6700(92)90009-n] [Citation(s) in RCA: 216] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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36
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Zhou ZH, Maruyama T, Kanbara T, Ikeda T, Ichimura K, Yamamoto T, Tokuda K. Unique optical and electrochemical properties of π-conjugated electrically conducting copolymers consisting of electron-withdrawing pyridine units and electron-donating thiophene units. ACTA ACUST UNITED AC 1991. [DOI: 10.1039/c39910001210] [Citation(s) in RCA: 63] [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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37
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Alcock NW, Bartlett PN, Eastwick-Field VM, Pike GA, Pringle PG. Reinvestigation of the nickel phosphine catalysed electrochemical synthesis of poly(2,5-pyridine). X-Ray crystal structures of [Ni2Br2(µ-5-BrC5H3N-C2,N)2(PPh3)2] and [PtBr(5-BrC5H3N-C2)(PPh3)2]. ACTA ACUST UNITED AC 1991. [DOI: 10.1039/jm9910100569] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Yamamoto T, Maruyama T, Ikeda T, Sisido M. Excimer-like emission from linear π-conjugated poly(pyridine-2,5-diyl). ACTA ACUST UNITED AC 1990. [DOI: 10.1039/c39900001306] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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