Grazing incidence X-ray diffraction of a photoaligned nematic semiconductor

Dröge, Stefan; Khalifah, Manea S Al; O'Neill, Mary; Thomas, Huw E.; Simmonds, Henje S.; Macdonald, J. Emyr; Aldred, Matthew P.; Vlachos, Panos; Kitney, Stuart P.; Löbbert, Andreas; Kelly, Stephen M.

doi:10.1021/jp803379a

The importance of particle type selection and temperature control for on-chip free-flow magnetophoresis (2009)
Journal Article
Tarn, M. D., Peyman, S. A., Robert, D., Iles, A., Wilhelm, C., & Pamme, N. (2009). The importance of particle type selection and temperature control for on-chip free-flow magnetophoresis. Journal of Magnetism and Magnetic Materials, 321(24), 4115-4122. https://doi.org/10.1016/j.jmmm.2009.08.016

Free-flow magnetophoresis is becoming a popular technique for the separation and manipulation of magnetic particles and materials in microsystems. A wide variety of magnetic particles are commercially available that differ greatly in size and in magn... Read More about The importance of particle type selection and temperature control for on-chip free-flow magnetophoresis.

The influence of an alkenyl terminal group on the mesomorphic behaviour and electro-optic properties of fluorinated terphenyl liquid crystals (2009)
Journal Article
Gasowska, J. S., Cowling, S. J., Cockett, M. C. R., Hird, M., Lewis, R. A., Raynes, E. P., & Goodby, J. W. (2010). The influence of an alkenyl terminal group on the mesomorphic behaviour and electro-optic properties of fluorinated terphenyl liquid crystals. Journal of Materials Chemistry, 20(2), 299-307. https://doi.org/10.1039/b914260f

Novel liquid crystal terphenyls with two, three and four lateral fluoro substituents and an alkene unit at the end of a terminal chain are presented in terms of synthesis, mesomorphic behaviour and electro-optic properties. The difluoro analogues wer... Read More about The influence of an alkenyl terminal group on the mesomorphic behaviour and electro-optic properties of fluorinated terphenyl liquid crystals.

Synthesis and phototoxicity of polyethylene glycol (PEG) substituted metal-free and metallo-porphyrins: Effect of PEG chain length, coordinated metal, and axial ligand (2009)
Journal Article
Mewis, R. E., Savoie, H., Archibald, S. J., & Boyle, R. W. (2009). Synthesis and phototoxicity of polyethylene glycol (PEG) substituted metal-free and metallo-porphyrins: Effect of PEG chain length, coordinated metal, and axial ligand. Photodiagnosis and Photodynamic Therapy, 6(3-4), 200-206. https://doi.org/10.1016/j.pdpdt.2009.08.002

Treatment of 5,10,15,20-tetra(pentafluorophenyl) porphyrins with polyethylene glycol (PEG) halides and sodium sulfide is a mild and efficient route to water-soluble PEG substituted porphyrins. The method has been used to access a series of free-base... Read More about Synthesis and phototoxicity of polyethylene glycol (PEG) substituted metal-free and metallo-porphyrins: Effect of PEG chain length, coordinated metal, and axial ligand.

Strained arrays of colloidal nanoparticles: Conductance and magnetoresistance enhancement (2009)
Journal Article
Rybchenko, S. I., Dyab, A. K. F., Haywood, S. K., Itskevich, I. E., & Paunov, V. N. (2009). Strained arrays of colloidal nanoparticles: Conductance and magnetoresistance enhancement. Nanotechnology, 20(42), Article ARTN 425607. https://doi.org/10.1088/0957-4484/20/42/425607

Colloidal nanoparticles are very popular as building blocks of functional arrays for electronic and optical applications. However, there is a problem in achieving electrical conductivity in such nanoarrays due to their molecular shells. These shells,... Read More about Strained arrays of colloidal nanoparticles: Conductance and magnetoresistance enhancement.

Mobile magnetic particles as solid-supports for rapid surface-based bioanalysis in continuous flow (2009)
Journal Article
Peyman, S. A., Iles, A., & Pamme, N. (2009). Mobile magnetic particles as solid-supports for rapid surface-based bioanalysis in continuous flow. Lab on a chip, 9(21), 3110-3117. https://doi.org/10.1039/b904724g

An extremely versatile microfluidic device is demonstrated in which multi-step (bio) chemical procedures can be performed in continuous flow. The system operates by generating several co-laminar flow streams, which contain reagents for specific (bio)... Read More about Mobile magnetic particles as solid-supports for rapid surface-based bioanalysis in continuous flow.

Molecular complexity and the control of self-organising processes (2009)
Journal Article
Goodby, J. W., Saez, I. M., Cowling, S. J., Gasowska, J. S., MacDonald, R. A., Sia, S., Watson, P., Toyne, K. J., Hird, M., Lewis, R. A., Lee, S.-E., & Vaschenko, V. (2009). Molecular complexity and the control of self-organising processes. Liquid crystals, 36(6-7), 567-605. https://doi.org/10.1080/02678290903146060

In this article we investigate the complexity of the molecular architectures of liquid crystals based on rod-like mesogens. Starting from simple monomeric systems founded on fluoroterphenyls, we first examine the effects of aromatic core structure on... Read More about Molecular complexity and the control of self-organising processes.

Rod-shaped dopants for flexoelectric nematic mixtures (2009)
Journal Article
Aziz, N., Kelly, S. M., Duffy, W., & Goulding, M. (2009). Rod-shaped dopants for flexoelectric nematic mixtures. Liquid crystals, 36(5), 503-520. https://doi.org/10.1080/02678290903031643

We report the synthesis and liquid crystalline behaviour of two series of para-substituted terphenyls as dopants with a rigid rod-like shape, rather than a wedge-, pear- or banana-shape, for guest-host nematic mixtures with flexoelectric properties.... Read More about Rod-shaped dopants for flexoelectric nematic mixtures.

Diamagnetic repulsion—A versatile tool for label-free particle handling in microfluidic devices (2009)
Journal Article
Peyman, S. A., Kwan, E. Y., Margarson, O., Iles, A., & Pamme, N. (2009). Diamagnetic repulsion—A versatile tool for label-free particle handling in microfluidic devices. Journal of Chromatography A, 1216(52), 9055-9062. https://doi.org/10.1016/j.chroma.2009.06.039

We report the exploration of diamagnetic repulsion forces for the selective manipulation of microparticles inside microfluidic devices. Diamagnetic materials such as polymers are repelled from magnetic fields, an effect greatly enhanced by suspending... Read More about Diamagnetic repulsion—A versatile tool for label-free particle handling in microfluidic devices.

Resolution of secondary arylalkyl alcohols using pentafluorophenyl 2-phenylbutanoate and zinc chloride (2009)
Journal Article
Coulbeck, E., & Eames, J. (2009). Resolution of secondary arylalkyl alcohols using pentafluorophenyl 2-phenylbutanoate and zinc chloride. Tetrahedron letters; the international organ for the rapid publication of preliminary communications in organic chemistry, 50(31), 4449-4451. https://doi.org/10.1016/j.tetlet.2009.05.046

The resolution of racemic secondary arylalkyl alcohols using pentafluorophenyl 2-phenylbutanoate and zinc chloride is discussed. The levels of enantiomeric recognition were high leading to enantiomerically enriched alcohols in good yield. © 2009 Else... Read More about Resolution of secondary arylalkyl alcohols using pentafluorophenyl 2-phenylbutanoate and zinc chloride.

Electrochemical Determination of Diffusion Anisotropy in Molecularly-Structured Materials (2009)
Journal Article
Evans, L. A., Thomasson, M. J., Kelly, S. M., & Wadhawan, J. (2009). Electrochemical Determination of Diffusion Anisotropy in Molecularly-Structured Materials. Journal of physical chemistry. C, 113(20), 8901-8910. https://doi.org/10.1021/jp806322c

Theory is presented for the case of two-dimensional diffusion anisotropy in axiosymmetric systems, which, advantageously and indirectly, affords a unified theory of diffusive mass transport at planar, microdisk (or nanodisk) and cylindrical electrode... Read More about Electrochemical Determination of Diffusion Anisotropy in Molecularly-Structured Materials.

Applicability of the kp method to modeling of InAs/GaSb short-period superlattices (2009)
Journal Article
Hong, B. H., Rybchenko, S. I., Itskevich, I. E., Haywood, S. K., Intartaglia, R., Tasco, V., Rainò, G., & De Giorgi, M. (2009). Applicability of the kp method to modeling of InAs/GaSb short-period superlattices. Physical review B: Condensed matter and materials physics, 79(16), 165323-1-165323-4. https://doi.org/10.1103/PhysRevB.79.165323

We investigate the long-standing controversy surrounding modeling of the electronic spectra of InAs/GaSb short-period superlattices (SPSLs). Most commonly, such modeling for semiconductor heterostructures is based on the kp method. However, this meth... Read More about Applicability of the kp method to modeling of InAs/GaSb short-period superlattices.

Glycerol and galactose substituted zinc phthalocyanines. Synthesis and photodynamic activity (2009)
Journal Article
Zorlu, Y., Ermeydan, M. A., Dumoulin, F., Ahsen, V., Savoie, H., & Boyle, R. W. (2009). Glycerol and galactose substituted zinc phthalocyanines. Synthesis and photodynamic activity. Photochemical & photobiological sciences : an international journal, 8(3), 312-318. https://doi.org/10.1039/b817348f

Three novel water soluble, non-ionic, zinc phthalocyanines (Pcs) have been synthesized and their spectroscopic and photodynamic properties investigated in aqueous media. One of the three compounds was shown to be significantly less aggregated, when c... Read More about Glycerol and galactose substituted zinc phthalocyanines. Synthesis and photodynamic activity.

Type-II InAsxSb1-x/InAs quantum dots for midinfrared applications: Effect of morphology and composition on electronic and optical properties (2009)
Journal Article
Yeap, G. H., Rybchenko, S. I., Itskevich, I. E., & Haywood, S. K. (2009). Type-II InAsxSb1-x/InAs quantum dots for midinfrared applications: Effect of morphology and composition on electronic and optical properties. Physical review B: Condensed matter and materials physics, 79(7), 075305-1-075305-6. https://doi.org/10.1103/physrevb.79.075305

InSb-based self-assembled quantum dots are very promising for the midinfrared (3-5μm) optical range. We have analyzed the effect of geometry and composition on the electronic structure and optical spectra of InAsx Sb1-x /InAs dots. The calculated tra... Read More about Type-II InAsxSb1-x/InAs quantum dots for midinfrared applications: Effect of morphology and composition on electronic and optical properties.

Grazing incidence X-ray diffraction of a photoaligned nematic semiconductor (2009)
Journal Article
Dröge, S., Khalifah, M. S. A., O'Neill, M., Thomas, H. E., Simmonds, H. S., Macdonald, J. E., Aldred, M. P., Vlachos, P., Kitney, S. P., Löbbert, A., & Kelly, S. M. (2009). Grazing incidence X-ray diffraction of a photoaligned nematic semiconductor. Journal of Physical Chemistry B, 113(1), 49-53. https://doi.org/10.1021/jp803379a

Grazing incidence X-ray diffraction is used to find the thin film morphology of an extended molecule with an irregular alternating fluorene - thiophene structure, which is used to obtain linearly polarized electroluminescence and the photovoltaic eff... Read More about Grazing incidence X-ray diffraction of a photoaligned nematic semiconductor.

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