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Title: Luminescent materials for organic light-emitting diodes (OLEDs) and bioimaging
Keywords: luminescent, OLEDs, Ir complexes, spirobifluorene, amphiphilic graft copolymer, bioimaging
Issue Date: 26-Mar-2009
Citation: YAO JUNHONG (2009-03-26). Luminescent materials for organic light-emitting diodes (OLEDs) and bioimaging. ScholarBank@NUS Repository.
Abstract: AbstractThe research progress in development of organic phosphorescent light emitting materials and fluorescent micelles will be presented.Organic light-emitting diodes (OLEDs) showed unlimited potential in flat-panel-display technologies due to light-weight, wide-viewing-angle, full color and low-power attributes. Iridium complexes are the most widely investigated phosphorescent materials due to their high efficiency and convenient color tunability. However, phosphorescent emitters suffer from concentration quench and triplet-triplet annihilation. To address these issues, spiro structural ligands were designed for iridium complexes. Polymeric phosphorescent materials for OLEDs were further designed and synthesized, proposing simple device structure and ameliorating phase separation encountered by small molecular doping system.Luminescent nanomaterials have been widely used for bio-imaging, e.g. organic dyes, fluorescent proteins, quantum dots (QDs) and silica particles (SNs). Fluorescent polymeric micelle is another promising category for these applications, which can be obtained from luminescent amphiphilic copolymers through simple synthesis with excellent biocompatibility and non-cytotoxicity. A series of novel amphiphilic copolymers composed of oligo/polyfluorene backbone and PEG side chains will be presented. Their behavior and properties as fluorescent micelles and potential application for bio-imaging will be discussed.
Appears in Collections:Ph.D Theses (Open)

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