Browsing by Author "DRURY, ANNA"
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Alternating and direct current characterization and photoinduced absorption studies of modified conjugated polymer thin films
BLAU, WERNER; COLEMAN, JONATHAN NESBIT; DRURY, ANNA (Journal of Applied Physics, 2004)Control of interchain separation enables the optical properties of polymer thin films to be altered. We present a thin film preparation technique that increases the free volume fraction in spin coated polymer thin films ... -
Alternating and direct current characterization and photoinduced absorption studies of modified conjugated polymer thin films
BLAU, WERNER; COLEMAN, JONATHAN; DRURY, ANNA (2004)Control of interchain separation enables the optical properties of polymer thin films to be altered. We present a thin film preparation technique that increases the free volume fraction in spin coated polymer thin films ... -
Effect of solvent and dispersant on the bundle dissociation of single-walled carbon nanotube
COLEMAN, JONATHAN; BLAU, WERNER; GIORDANI, SILVIA; DRURY, ANNA (2005)Single-wall carbon nanotubes (SWCNT) are severely restricted in their applications, as they exist in rope-like bundles. Recently, J. Coleman et al. demonstrated a spectroscopic method to monitor bundle dissociation in low ... -
Enhanced brightness in organic light-emitting diodes using a carbon nanotube composite as an electron-transport layer
COLEMAN, JONATHAN; DRURY, ANNA; BLAU, WERNER (2001)We have studied the effects of using a composite fabricated from carbon nanotubes and a host polymer, poly(m-phenylene-vinylene-co-2,5-dioctyloxy-p-phenylene-vinylene) (PmPV), as an electron-transport layer in organic ... -
Experimental observation of scaling laws for alternating current and direct current conductivity in polymer-carbon nanotube composite thin films
HUTZLER, STEFAN; BLAU, WERNER; COLEMAN, JONATHAN; DRURY, ANNA (2002)Alternating current (ac) and direct current (dc) conductivities have been measured in polymer-nanotube composite thin films. This was carried out for a range of concentrations of multiwall nanotubes in two polymer hosts, ... -
Investigation of different synthetic routes to and structure-property relationships of poly(m-phenylenevinylene-co-2,5-dioctyloxy-p-phenylenevinylene)
DRURY, ANNA; BLAU, WERNER (2003)The synthesis of poly(m-phenylenevinylene-co-2,5-dioctyloxy-p-phenylenevinylene) by Horner?Emmons and Wittig condensation polymerisation in three different solvents is described. The chemical and optical properties of the ... -
Light amplification and lasing in a (meta-phenylene vinylene) copolymer
DRURY, ANNA; BLAU, WERNER (2003)We report on single pass optical gain and lasing measurements on a blue-emitting copolymer, poly ~ m -phenylene vinylene-co-2,5-dioctyloxy- p -phenylene vinylene ! under 0.5 ns pulsed photoexcitation. This soluble ... -
Measurement of nanotube content in pyrolytically generated carbon soot
COLEMAN, JONATHAN; BLAU, WERNER; DRURY, ANNA (2000)Carbon nanotubes can be efficiently separated from impurity material in carbon soot using a conjugated polymer filtration system as monitored by EPR, allowing the calculation of purity of the crude carbon soot. -
Poly(5-tert-butyl)benzothiophene: a soluble form of polyisothianaphthene with a large nonlinear optical response
BLAU, WERNER; DRURY, ANNA (1998)A soluble form of polybenzothiophene has been produced and chemically characterised. NMR spectroscopy indicates that there is a large quinoidal character contribution to the ground state of the polymer. The third ...