177856-55-2Relevant academic research and scientific papers
Electroluminescent nematic polymer networks with polarised emission
Contoret, Adam,Farrar, Simon,Jackson, Perregrin,Kelly, Stephen M.,Khan, Sultan,Nicholls, Edward,Oneill, Mary,Richards, Gary
, p. 511 - 518 (2001)
Electroluminescence with a polarisation ratio of 12:1 from a uniformly aligned nematic network is reported. Diene photo-active end-groups were used, which polymerise by a selective cyclisation reaction. Surface alignment was achieved for the first time using a doped polymer photoalignment layer, oriented by exposure to polarised UV light. Threshold voltages between 2 V and 8 V were found and a brightness of 90 cd m-2 was obtained. Both the PL and EL intensities were higher after photochemical crosslinking.
Manufacturing method for substrate having liquid crystal alignment film for in-plane switching-type liquid crystal display element
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Paragraph 0661-0665, (2018/03/24)
The present invention provides an in-plane switching-type liquid crystal display element imparted with a high-efficiency alignment control function, and having excellent burn-in properties. The present invention also provides a manufacturing method for a substrate having a liquid crystal alignment film, said method having the following steps for obtaining a liquid crystal alignment film for an in-plane switching-type liquid crystal display element imparted with an alignment control function: [I] a step in which a polymer composition, which contains (A) a light-sensitive sidechain polymer that exhibits liquid crystallinity at a prescribed temperature range and (B) an organic solvent, is coated on a substrate having a conductive film for in-plane switching, and a coating film is formed; [II] a step in which the coating film obtained in [I] is irradiated with polarized UV light; and [III] a step in which the coating film obtain in [II] is heated.
Linearly polarised organic light-emitting diodes (OLEDs): Synthesis and characterisation of a novel hole-transporting photoalignment copolymer
Aldred, Matthew P.,Vlachos, Panos,Contoret, Adam E. A.,Farrar, Simon R.,Chung-Tsoi,Mansoor, Bassam,Woon, Kai L.,Hudson, Robert,Kelly, Stephen M.,O'Neill, Mary
, p. 3208 - 3213 (2007/10/03)
We describe the synthesis and characterisation of a novel hole transporting photoalignment copolymer for linearly polarised emission. The copolymer has a coumarin side-chain which undergoes (2 + 2) cycloaddition on irradiation with ultraviolet light. A fluorene side-chain, whose ionisation potential is well matched to the work-function of indium tin oxide, provides hole transporting properties. Polarised green electroluminescence was obtained by spin coating a novel polymerisable and light-emitting liquid crystal onto the photoaligned copolymer. A polarisation ratio value of 13 : 1 and a polarised irradiance of 200 cd m-2 was obtained at 9 V. Polarised red emission is also described in a guest-host configuration. The spatial patterning of the polarisation direction is also shown. The Royal Society of Chemistry 2005.
