All Outputs (363)

Synthesis, structural, and photophysical properties of the first member of the class of pyrene-based [4]helicenes (2013)
Journal Article
Hu, J. Y., Feng, X., Paudel, A., Tomiyasu, H., Rayhan, U., Thuéry, P., …Yamato, T. (2013). Synthesis, structural, and photophysical properties of the first member of the class of pyrene-based [4]helicenes. European Journal of Organic Chemistry, 2013(26), 5829-5837. https://doi.org/10.1002/ejoc.201300487

A convenient route to a new class of pyrene-based [4]helicenes is presented. Wittig reaction of 7-tert-butyl-1,3-dimethyl-5-formylpyrene with benzyltriphenylphosphonium salts in the presence of nBuLi afforded 7-tert-butyl-1,3-dimethyl-5-(phenyletheny... Read More about Synthesis, structural, and photophysical properties of the first member of the class of pyrene-based [4]helicenes.

Synthesis of triphenylene discotic liquid crystals possessing nine alkyl chains: Influence of molecular symmetry and chain length on mesomorphism (2013)
Journal Article
Xiao, B., Liu, Z. J., Wang, B. Q., Hu, P., Redshaw, C., & Zhao, K. Q. (2013). Synthesis of triphenylene discotic liquid crystals possessing nine alkyl chains: Influence of molecular symmetry and chain length on mesomorphism. Molecular crystals and liquid crystals, 577(1), 25-35. https://doi.org/10.1080/15421406.2013.781489

A series of new triphenylene discotic liquid crystals has been synthesized by a straightway and the influence of molecular symmetry and chain length on the mesomorphism investigated. The symmetrical compounds 1, 3,7,11- trimethoxytriphenylene-2,6,10-... Read More about Synthesis of triphenylene discotic liquid crystals possessing nine alkyl chains: Influence of molecular symmetry and chain length on mesomorphism.

Unsymmetrical α-diiminonickel bromide complexes: Synthesis, characterization and their catalytic behavior toward ethylene (2013)
Journal Article
Jia, D., Zhang, W., Liu, W., Wang, L., Redshaw, C., & Sun, W. H. (2013). Unsymmetrical α-diiminonickel bromide complexes: Synthesis, characterization and their catalytic behavior toward ethylene. Catalysis science & technology, 3(10), 2737-2745. https://doi.org/10.1039/c3cy00422h

A series of unsymmetrical α-diimine compounds L1-L5 bearing the dibenzhydryl substituent (-CH(Ph)2) has been prepared and characterized by IR and NMR (1H/13C) spectroscopy as well as by elemental analysis. Their corresponding nickel dibromide complex... Read More about Unsymmetrical α-diiminonickel bromide complexes: Synthesis, characterization and their catalytic behavior toward ethylene.

Nickel(II) complexes bearing 4,5-bis(arylimino)pyrenylidenes: Synthesis, characterization, and ethylene polymerization behaviour (2013)
Journal Article
Song, K., Yang, W., Li, B., Liu, Q., Redshaw, C., Li, Y., & Sun, W. H. (2013). Nickel(II) complexes bearing 4,5-bis(arylimino)pyrenylidenes: Synthesis, characterization, and ethylene polymerization behaviour. Dalton Transactions : an international journal of inorganic chemistry, 42(25), 9166-9175. https://doi.org/10.1039/c2dt32343e

A series of nickel(II) dihalides complexes bearing 4,5-bis(arylimino) pyrenylidenes, NiX2(2,6-R1-4-R2C 6H2N)2C16H8, was synthesized and characterized by FT-IR spectroscopy, elemental analysis, and single crystal X-ray diffraction for the organic comp... Read More about Nickel(II) complexes bearing 4,5-bis(arylimino)pyrenylidenes: Synthesis, characterization, and ethylene polymerization behaviour.

An efficient approach to the synthesis of novel pyrene-fused azaacenes (2013)
Journal Article
Feng, X., Iwanaga, F., Hu, J. Y., Tomiyasu, H., Nakano, M., Redshaw, C., …Yamato, T. (2013). An efficient approach to the synthesis of novel pyrene-fused azaacenes. Organic Letters, 15(14), 3594-3597. https://doi.org/10.1021/ol401438a

An efficient synthetic approach for functionalization of both the active sites (1,3-) and the K-region (4,5,9,10-) of pyrene was accomplished by bromination and oxidation with considerable yield. These novel pyrene-fused azaacenes were thoroughly inv... Read More about An efficient approach to the synthesis of novel pyrene-fused azaacenes.

Tri-substituted hexahomotrioxacalix[3]arene derivatives bearing imidazole units: Synthesis and extraction properties for cations and chromate anions (2013)
Journal Article
Ni, X. L., Jin, C. C., Jiang, X. K., Takimoto, M., Rahman, S., Zeng, X., …Yamato, T. (2013). Tri-substituted hexahomotrioxacalix[3]arene derivatives bearing imidazole units: Synthesis and extraction properties for cations and chromate anions. Organic & biomolecular chemistry, 11(33), 5435-5442. https://doi.org/10.1039/c3ob40601f

The article describes the synthesis and extraction properties of the new hexahomotrioxacalix[3]arene-based derivatives cone- and partial-cone-2 bearing 1-methyl-1H-imidazole moieties at the lower rim. It has been demonstrated that O-alkylation of the... Read More about Tri-substituted hexahomotrioxacalix[3]arene derivatives bearing imidazole units: Synthesis and extraction properties for cations and chromate anions.

Mono-disperse triphenylene discotic liquid crystal oligomers synthesized by click chemistry (2013)
Journal Article
Bai, Y. F., Zhao, K. Q., Hu, P., Wang, B. Q., & Redshaw, C. (2013). Mono-disperse triphenylene discotic liquid crystal oligomers synthesized by click chemistry. Current Organic Chemistry, 17(8), 871-885. https://doi.org/10.2174/1385272811317080012

Discotic liquid crystals, as new organic semiconductors, possess not only the ability to self-organize to a highly ordered columnar mesophase, but also possess high charged carrier mobility and solution processed characteristic. The progress of synth... Read More about Mono-disperse triphenylene discotic liquid crystal oligomers synthesized by click chemistry.

Tetraphenylethene-triphenylene oligomers with an aggregation-induced emission effect and discotic columnar mesophase (2013)
Journal Article
Yu, W. H., Chen, C., Hu, P., Wang, B. Q., Redshaw, C., & Zhao, K. Q. (2013). Tetraphenylethene-triphenylene oligomers with an aggregation-induced emission effect and discotic columnar mesophase. RSC advances, 3(33), 14099-14105. https://doi.org/10.1039/c3ra41874j

Tetraphenylethene derivatives not only exhibit "aggregation-induced emission" (AIE) effects, but also can form a mesophase with a turbine-like rigid core. Here we report the synthesis of three tetraphenylethene-triphenylene oligomers 7, 8E and 8Z by... Read More about Tetraphenylethene-triphenylene oligomers with an aggregation-induced emission effect and discotic columnar mesophase.

Highly active, thermally stable, ethylene-polymerisation pre-catalysts based on niobium/tantalum-imine systems (2013)
Journal Article
Redshaw, C., Walton, M., Clowes, L., Hughes, D. L., Fuller, A. M., Chao, Y., …Sun, W. H. (2013). Highly active, thermally stable, ethylene-polymerisation pre-catalysts based on niobium/tantalum-imine systems. Chemistry: a European journal, 19(27), 8884-8899. https://doi.org/10.1002/chem.201300453

The reactions of MCl 5 or MOCl 3 with imidazole-based pro-ligand L 1 H, 3,5-tBu 2 -2-OH-C 6 H 2 -(4,5-Ph 2 -1H-)imidazole, or oxazole-based ligand L 2 H, 3,5-tBu 2 -2-OH-C 6 H 2 (1H- phenanthro[9,10-d])oxazole, following work-up, afforded octahedral... Read More about Highly active, thermally stable, ethylene-polymerisation pre-catalysts based on niobium/tantalum-imine systems.

Synthesis and fluorescence emission properties of 1,3,6,8-tetraarylpyrenes (2013)
Journal Article
Hu, J. Y., Feng, X., Tomiyasu, H., Seto, N., Rayhan, U., Elsegood, M. R., …Yamato, T. (2013). Synthesis and fluorescence emission properties of 1,3,6,8-tetraarylpyrenes. Journal of molecular structure, 1047, 194-203. https://doi.org/10.1016/j.molstruc.2013.04.074

Three types of stable pyrene-based highly fluorescence (blue) compounds, 1-, 1,6-bis, 1,8-bis and 1,3,6,8-tetrakis(7-tert-butylpyrenyl)pyrenes and 1,3,6,8-tetrakis[9,9-bis(3-methylbutyl)-9H-fluoren-2-yl]pyrene, were successfully synthesized via a Pd/... Read More about Synthesis and fluorescence emission properties of 1,3,6,8-tetraarylpyrenes.

Halonickel 2,4-di-t-butyl-6-(quinolin-8-yliminomethyl)phenolates: Synthesis, characterization and ethylene reactivity (2013)
Journal Article
Shi, Q. S., Hao, X., Redshaw, C., & Sun, W. H. (2013). Halonickel 2,4-di-t-butyl-6-(quinolin-8-yliminomethyl)phenolates: Synthesis, characterization and ethylene reactivity. Chinese Journal of Polymer Science, 31(5), 769-777. https://doi.org/10.1007/s10118-013-1266-z

A series of nickel halides bearing 2,4-di-t-butyl-6-(quinolin-8- yliminomethyl) phenolate ligands was synthesized and characterized by IR spectroscopy and elemental analysis. Molecular structures of C1 (R = H, X = Br) and C2 (R = H, X = Cl) were furt... Read More about Halonickel 2,4-di-t-butyl-6-(quinolin-8-yliminomethyl)phenolates: Synthesis, characterization and ethylene reactivity.

Probing the characteristics of mono- or bimetallic (iron or cobalt) complexes bearing 2,4-bis(6-iminopyridin-2-yl)-3 H-benzazepines: Synthesis, characterization, and ethylene reactivity (2013)
Journal Article
Sun, W. H., Xing, Q., Yu, J., Novikova, E., Zhao, W., Tang, X., …Redshaw, C. (2013). Probing the characteristics of mono- or bimetallic (iron or cobalt) complexes bearing 2,4-bis(6-iminopyridin-2-yl)-3 H-benzazepines: Synthesis, characterization, and ethylene reactivity. Organometallics, 32(8), 2309-2318. https://doi.org/10.1021/om301086p

A series of 2,4-bis(6-iminopyridin-2-yl)-3H-benzazepines and the mono- or bimetallic (Fe2+ or Co2+) complexes thereof were synthesized and characterized. All title complexes, when activated by MAO or MMAO, exhibited high activities of up to 4.0 × 107... Read More about Probing the characteristics of mono- or bimetallic (iron or cobalt) complexes bearing 2,4-bis(6-iminopyridin-2-yl)-3 H-benzazepines: Synthesis, characterization, and ethylene reactivity.

Synthesis, characterization and catalytic behavior toward ethylene of 2-[1-(4,6-dimethyl-2-benzhydrylphenylimino)ethyl]-6-[1-(arylimino)ethyl] pyridylmetal (iron or cobalt) chlorides (2013)
Journal Article
Wang, S., Li, B., Liang, T., Redshaw, C., Li, Y., & Sun, W. H. (2013). Synthesis, characterization and catalytic behavior toward ethylene of 2-[1-(4,6-dimethyl-2-benzhydrylphenylimino)ethyl]-6-[1-(arylimino)ethyl] pyridylmetal (iron or cobalt) chlorides. Dalton Transactions : an international journal of inorganic chemistry, 42(25), 9188-9197. https://doi.org/10.1039/c3dt00011g

A series of 2-[1-(4,6-dimethyl-2-benzhydrylphenylimino)ethyl]-6-[1- (arylimino)ethyl]pyridines was synthesized and used to prepare the iron(ii) and cobalt(ii) chloride complexes thereof. All organic compounds were fully characterized by elemental ana... Read More about Synthesis, characterization and catalytic behavior toward ethylene of 2-[1-(4,6-dimethyl-2-benzhydrylphenylimino)ethyl]-6-[1-(arylimino)ethyl] pyridylmetal (iron or cobalt) chlorides.

Blue-emitting butterfly-shaped 1,3,5,9-tetraarylpyrenes: Synthesis, crystal structures, and photophysical properties (2013)
Journal Article
Feng, X., Hu, J. Y., Iwanaga, F., Seto, N., Redshaw, C., Elsegood, M. R., & Yamato, T. (2013). Blue-emitting butterfly-shaped 1,3,5,9-tetraarylpyrenes: Synthesis, crystal structures, and photophysical properties. Organic Letters, 15(6), 1318-1321. https://doi.org/10.1021/ol4002653

The first example of aryl-functionalized, butterfly-shaped, highly fluorescent and stable blue-emitting monomers, namely, 7-tert-butyl-1,3,5,9- tetrakis(p-R-phenyl)pyrenes, were synthesized by the Suzuki-Miyaura cross-coupling reaction from a novel b... Read More about Blue-emitting butterfly-shaped 1,3,5,9-tetraarylpyrenes: Synthesis, crystal structures, and photophysical properties.

2-(1-{2,6-Bis[bis(4-fluorophenyl)methyl]-4-methylphenylimino}ethyl) -6-[1-(arylimino)ethyl]pyridylcobalt dichlorides: Synthesis, characterization and ethylene polymerization behavior (2013)
Journal Article
Wang, S., Zhao, W., Hao, X., Li, B., Redshaw, C., Li, Y., & Sun, W. H. (2013). 2-(1-{2,6-Bis[bis(4-fluorophenyl)methyl]-4-methylphenylimino}ethyl) -6-[1-(arylimino)ethyl]pyridylcobalt dichlorides: Synthesis, characterization and ethylene polymerization behavior. Journal of organometallic chemistry, 731, 78-84. https://doi.org/10.1016/j.jorganchem.2013.02.016

A series of 2-(1-{2,6-bis[bis(4-fluorophenyl)methyl]-4-methylphenyl-imino} ethyl)-6-[1-(arylimino)ethyl]pyridylcobalt(II) chloride complexes (Co1-Co5) was synthesized and characterized by FT-IR spectroscopy and elemental analysis. The molecular struc... Read More about 2-(1-{2,6-Bis[bis(4-fluorophenyl)methyl]-4-methylphenylimino}ethyl) -6-[1-(arylimino)ethyl]pyridylcobalt dichlorides: Synthesis, characterization and ethylene polymerization behavior.

New structural motifs in lithium and zinc calix[4]arene chemistry (2013)
Journal Article
Redshaw, C., Rowe, O., Hughes, D. L., Fuller, A. M., Ibarra, I. A., & Humphrey, S. M. (2013). New structural motifs in lithium and zinc calix[4]arene chemistry. Dalton Transactions : an international journal of inorganic chemistry, 42(6), 1983-1986. https://doi.org/10.1039/c2dt32986g

The structures of three novel compounds prepared from the reaction of the lower-rim 1,3-diacid calix[4]arene (LH2) with lithium carbonate (1), t-butyl-lithium (2) and zinc acetate (3) are reported. © The Royal Society of Chemistry 2013.

Methylene-bridged bimetallic α-diimino nickel(ii) complexes: Synthesis and high efficiency in ethylene polymerization (2013)
Journal Article
Kong, S., Song, K., Liang, T., Guo, C. Y., Sun, W. H., & Redshaw, C. (2013). Methylene-bridged bimetallic α-diimino nickel(ii) complexes: Synthesis and high efficiency in ethylene polymerization. Dalton Transactions : an international journal of inorganic chemistry, 42(25), 9176-9187. https://doi.org/10.1039/c3dt00023k

A series of 1,2-bis(arylimino)acenaphthylidenes (L1-L5) and their corresponding 4,4′-methylenebis(1-(2,6-diisopropylphenylimino)-2- (arylimino)acenaphthylene) derivatives (L6-L10) were synthesized and used to form mono-nuclear nickel bromides LnNiBr2... Read More about Methylene-bridged bimetallic α-diimino nickel(ii) complexes: Synthesis and high efficiency in ethylene polymerization.

Construction of cucurbit[7]uril based tubular nanochannels incorporating associated [CdCl4]2- and lanthanide ions (2013)
Journal Article
Liang, L. L., Ni, X. L., Zhao, Y., Chen, K., Xiao, X., Zhang, Y. Q., …Tao, Z. (2013). Construction of cucurbit[7]uril based tubular nanochannels incorporating associated [CdCl4]2- and lanthanide ions. Inorganic chemistry, 52(4), 1909-1915. https://doi.org/10.1021/ic302145j

There is intensive interest in the design of tubular channels because of their novel structures and various applications in a variety of research fields. Herein, we present a series of coordination-driven Q[7]-derived organic nanochannels using an an... Read More about Construction of cucurbit[7]uril based tubular nanochannels incorporating associated [CdCl4]2- and lanthanide ions.

Macrocycle-based metal ion complexation: A study of the lanthanide contraction effect towards hexacyclohexanocucurbit[6]uil (2013)
Journal Article
Qin, X., Ni, X. L., Hu, J. X., Chen, K., Zhang, Y. Q., Redshaw, C., …Tao, Z. (2013). Macrocycle-based metal ion complexation: A study of the lanthanide contraction effect towards hexacyclohexanocucurbit[6]uil. CrystEngComm, 15(4), 738-744. https://doi.org/10.1039/c2ce26225h

In the present study, the lanthanide(iii) contraction effect induced coordination architectures of HCyHQ[6] have been studied. The results, including fifteen crystal structures, indicate that although lanthanide metal ions have similar chemical prope... Read More about Macrocycle-based metal ion complexation: A study of the lanthanide contraction effect towards hexacyclohexanocucurbit[6]uil.

Nickel complex pre-catalysts in ethylene polymerization: New approaches to elastomeric materials (2013)
Journal Article
Gao, R., Sun, W. H., & Redshaw, C. (2013). Nickel complex pre-catalysts in ethylene polymerization: New approaches to elastomeric materials. Catalysis science & technology, 3(5), 1172-1179. https://doi.org/10.1039/c3cy20691b

Recent progress on nickel-based complex pre-catalysts has been reviewed. Variation of the complex models by employing different types of heteroatom-containing ligands and the new features associated with the resulting highly branched polyethylenes is... Read More about Nickel complex pre-catalysts in ethylene polymerization: New approaches to elastomeric materials.