Outputs (81)

Design, synthesis, and characterization of mesogenic amine-capped nematic gold nanoparticles with surface-enhanced plasmonic resonances (2012)
Journal Article
Yu, C. H., Schubert, C. P. J., Welch, C., Tang, B. J., Tamba, M. G., & Mehl, G. H. (2012). Design, synthesis, and characterization of mesogenic amine-capped nematic gold nanoparticles with surface-enhanced plasmonic resonances. Journal of the American Chemical Society, 134(11), 5076-5079. https://doi.org/10.1021/ja300492d

The use of the liquid-crystalline state to control the assembly of large (>5 nm) gold nanoparticles (NPs) is of considerable interest because of the promise of novel metamaterial properties of such systems. Here we report on a new approach for the pr... Read More about Design, synthesis, and characterization of mesogenic amine-capped nematic gold nanoparticles with surface-enhanced plasmonic resonances.

Electrochemistry of organometallic lyotropic chromonic liquid crystals (2012)
Journal Article
Halls, J. E., Bourne, R. W., Wright, K. J., Partington, L. I., Tamba, M. G., Zhou, Y., Ramakrishnappa, T., Mehl, G. H., Kelly, S. M., & Wadhawan, J. D. (2012). Electrochemistry of organometallic lyotropic chromonic liquid crystals. Electrochemistry communications, 19(1), 50-54. https://doi.org/10.1016/j.elecom.2012.02.032

Two aqueous lyotropic chromonic liquid crystals made from nickel(II) or copper(II) phthalocyananine tetrasulfonic acid tetrasodium salt are prepared with characterisation through optical polarising microscopy, X-ray diffraction and conductivity. Thes... Read More about Electrochemistry of organometallic lyotropic chromonic liquid crystals.

Fabrication of novel lightweight composites by a hydrogel templating technique (2012)
Journal Article
Rutkevicius, M., Munusami, S. K., Watson, Z., Field, A. D., Salt, M., Stoyanov, S. D., Petkov, J., Mehl, G., & Paunov, V. N. (2012). Fabrication of novel lightweight composites by a hydrogel templating technique. Materials research bulletin, 47(4), 980-986. https://doi.org/10.1016/j.materresbull.2012.01.014

A non-conventional way of preparation of lightweight porous materials by templating hydrogels with a range of hydrophilic and hydrophobic scaffolding materials was explored. Sub-millimetre hydrogel slurries of polyacrylamide and gellan gum were templ... Read More about Fabrication of novel lightweight composites by a hydrogel templating technique.

Addressing fluorescence and liquid crystal behaviour in multi-mesogenic BODIPY materials (2011)
Journal Article
Benstead, M., Rosser, G. A., Beeby, A., Mehl, G. H., & Boyle, R. W. (2011). Addressing fluorescence and liquid crystal behaviour in multi-mesogenic BODIPY materials. New journal of chemistry = Nouveau journal de chimie, 35(7), 1410-1417. https://doi.org/10.1039/c0nj00990c

Two series of BODIPYs (4,4'-difluoro-3a, 4a-diaza-s-indacene) bearing mesogenic substituents have been synthesised and their fluorescent and self-assembly behaviour has been observed and characterised. In order to induce a strong preference for liqui... Read More about Addressing fluorescence and liquid crystal behaviour in multi-mesogenic BODIPY materials.

4,4′-Difluoro-4-bora-3a,4a-diaza-s-indacenes (BODIPYs) as components of novel light active materials (2011)
Journal Article
Benstead, M., Mehl, G. H., & Boyle, R. W. (2011). 4,4′-Difluoro-4-bora-3a,4a-diaza-s-indacenes (BODIPYs) as components of novel light active materials. Tetrahedron, 67(20), 3573-3601. https://doi.org/10.1016/j.tet.2011.03.028

Applications of BODIPY fluorophores as components of light active materials are reviewed.

Mesogenic BODIPYs: An investigation of the correlation between liquid crystalline behaviour and fluorescence intensity (2011)
Journal Article
Benstead, M., Beeby, A., Rosser, G. A., Mehl, G. H., & Boyle, R. W. (2011). Mesogenic BODIPYs: An investigation of the correlation between liquid crystalline behaviour and fluorescence intensity. Photochemical & photobiological sciences : an international journal, 10(6), 992-999. https://doi.org/10.1039/c0pp00388c

A series of mesogenic molecules based on the 4,4¢-di?uoro-3a,4a-diaza-s-indacene (BODIPY) ?uorophore have been synthesised and characterised. Each compound consists of one mesogenic unit, based on a cyanobiphenyl core, and one ?uorophore, of varying... Read More about Mesogenic BODIPYs: An investigation of the correlation between liquid crystalline behaviour and fluorescence intensity.

Spontaneous periodic deformations in nonchiral planar-aligned bimesogens with a nematic-nematic transition and a negative elastic constant (2010)
Journal Article
Panov, V. P., Nagaraj, M., Vij, J. K., Panarin, Y. P., Kohlmeier, A., Tamba, M. G., Lewis, R. A., & Mehl, G. H. (2010). Spontaneous periodic deformations in nonchiral planar-aligned bimesogens with a nematic-nematic transition and a negative elastic constant. Physical review letters, 105(16), Article ARTN 167801. https://doi.org/10.1103/PhysRevLett.105.167801

Hydrocarbon linked mesogenic dimers are found to exhibit an additional nematic phase below the conventional uniaxial nematic phase as confirmed by x-ray diffraction. The phase produces unusual periodic stripe domains in planar cells. The stripes are... Read More about Spontaneous periodic deformations in nonchiral planar-aligned bimesogens with a nematic-nematic transition and a negative elastic constant.

Bridging the visible: the modulation of the absorption by more than 450 nm (2010)
Journal Article
Delbaere, S., Vermeersch, G., Frigoli, M., & Mehl, G. H. (2010). Bridging the visible: the modulation of the absorption by more than 450 nm. Organic Letters, 12(18), 4090-4093. https://doi.org/10.1021/ol101672v

The coexistence of 18 isomers, identified by NMR spectroscopy and gathered into six states with very different absorption properties, is observed upon irradiation with selective wavelengths of a triphotochromic system joining two naphthopyran entitie... Read More about Bridging the visible: the modulation of the absorption by more than 450 nm.

3D ordered gold strings by coating nanoparticles with mesogens (2009)
Journal Article
Zeng, X., Liu, F., Fowler, A. G., Ungar, G., Cseh, L., Mehl, G. H., & Macdonald, J. E. (2009). 3D ordered gold strings by coating nanoparticles with mesogens. Advanced materials, 21(17), 1746-1750. https://doi.org/10.1002/adma.200803403

Gold nanoparticles covered with a nematic liquid-crystal ligand laterally attached via a thioalkyl spacer and a thioalkane "diluent" exhibit 3D ordering in strings jacketed by the mesogens with controllable interparticle spacing. The particles form r... Read More about 3D ordered gold strings by coating nanoparticles with mesogens.

A "Kite" Shaped Styryl End-Capped Benzo[2,1-b:3,4-b ']dithiophene with High Electrical Performances in Organic Thin Film Transistors (2008)
Journal Article
Didane, Y., Mehl, G. H., Kumagai, A., Yoshimoto, N., Videlot-Ackermann, C., & Brisset, H. (2008). A "Kite" Shaped Styryl End-Capped Benzo[2,1-b:3,4-b ']dithiophene with High Electrical Performances in Organic Thin Film Transistors. Journal of the American Chemical Society, 130(52), 17681-17683. https://doi.org/10.1021/ja807504k

The bridging of distyryl-bithiophene leads to a kite shape of the conjugated system. This twist is not like twistacenes or twist deformation in α-oligothiophenes but a curvature such as in bowl shaped systems. Initially perceived to be undesirable, t... Read More about A "Kite" Shaped Styryl End-Capped Benzo[2,1-b:3,4-b ']dithiophene with High Electrical Performances in Organic Thin Film Transistors.