Publications by authors named "A K Andreopoulou"

Mental illness stigma is still a widespread phenomenon with damaging psychological and social consequences. This study is of relevance to the design of appropriate psychiatric services which reinforce the social integration of individuals living with mental illness. It investigates the relationship between contact, emotional intelligence (EI) and attitudes of the general population towards people with mental illness.

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Article Synopsis
  • * It highlights the importance of stable blue-emitting materials for commercial use in OLEDs while addressing the challenges related to charge injection due to the energy gap between HOMO and LUMO levels.
  • * The research evaluates both a newly synthesized polymer (CzCop) and three commercial polymers using techniques like Spectroscopic Ellipsometry and Photoluminescence to analyze their optical, photophysical, and electrical properties to understand color stability in OLED devices.
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In this study, fully aromatic polyether sulfones were developed, bearing blue, yellow, and orange-red π-conjugated semiconducting units. Carbazole-, anthracene-, and benzothiadiazole-based fluorophores are copolymerized with a diphenylsulfone moiety. A diphenylpyridine comonomer was additionally utilized, acting as both a solubilizing unit and a weak blue fluorescent group.

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Extensive research has been dedicated to the solution-processable white organic light-emitting diodes (WOLEDs), which can potentially influence future solid-state lighting and full-color flat-panel displays. The proposed strategy based on WOLEDs involves blending two or more emitting polymers or copolymerizing two or more emitting chromophores with different doping concentrations to produce white light emission from a single layer. Toward this direction, the development of blends was conducted using commercial blue poly(9,9-di-n-octylfluorenyl2,7-diyl) (PFO), green poly(9,9-dioctylfluorenealt-benzothiadiazole) (F8BT), and red spiro-copolymer (SPR) light-emitting materials, whereas the synthesized copolymers were based on different chromophores, namely distyryllanthracene, distyrylcarbazole, and distyrylbenzothiadiazole, as yellow, blue, and orange-red emitters, respectively.

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A systematic study of the influence of the chemical substitution pattern of semiconducting polymers carrying side chain perylene diimide (PDI) groups is presented. Semiconducting polymers based on perflurophenyl quinoline (5FQ) were modified via a readily accessible nucleophilic substitution reaction. The perfluorophenyl group was studied as an electron-withdrawing reactive functionality on semiconducting polymers that can undergo fast nucleophilic aromatic substitution.

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