Dissertation > Excellent graduate degree dissertation topics show

Synthesis of Cyclometalated Iridium Complexes and Studies on Their Properties in Electrophosphorescent Devices

Author: WuZhongLian
Tutor: ZhuWeiGuo
School: Xiangtan University
Course: Organic Chemistry
Keywords: Electrophosphorescence Iridium Ring metal complexes Polymer light-emitting diodes
CLC: O641.4
Type: Master's thesis
Year: 2004
Downloads: 365
Quote: 2
Read: Download Dissertation

Abstract


In this thesis the organic / polymer electroluminescent phosphorescent mechanism and development status. For electroluminescent phosphorescent materials and devices exist, we carried out the molecular design of the electric the phosphorescent material bicyclo metal iridium complexes, Synthesis and electroluminescent properties of the polymer. Design and synthesis of two types of a total of six kinds of bicyclo metal iridium complex, characterized by the molecular structure of these types of materials, as the object and a polymer and of bicyclo metal iridium complexes polyfluorene (PFO) or polyvinyl carbazole (PVK )] of the main body, produced the bilayer polymer electrolyte phosphorescent device, studied their electroluminescent properties. A series of substituted aryl acid chloride into two hydrazide and dehydration reaction by esterification, hydrazine solution, and synthesis of five 1, 3, 4 - oxadiazol azole ligand; pyridine and p-nitroaniline by the Gomberg-Bachmann reaction , Pd-C reduction and Ullmann reaction, synthesis of a triarylamine-containing functional group, 2 - phenyl - pyridine ligand. The obtained ligands respectively generating three hydrated iridium trichloride response. Chloro-bridged dimer, and then reacted with acetylacetone the bicyclo metal iridium complex. Its molecular structure was characterized by NMR, elemental analysis, mass spectrometry, and other means. The ultraviolet spectroscopy studies have shown that these bicyclic iridium complexes the metal - ligand charge electronic transitions (MLCT) absorption peak, these ring metal iridium complexes are two types of new electroluminescent phosphorescent material. Bicyclic metal iridium complexes as the object polymer materials PVK or PFO as the main material, the produced polymer Electrophosphorescent devices. Maximum external quantum efficiency (QEext) 2.77% of the a red electric phosphorescent devices and the largest QEext to 10.4% green electricity phosphorescent devices, which the green Electrophosphorescent devices luminous efficiency reached international level. The study showed that: (1) cycloalkyl the metal iridium complexes of the ligand in the introduction of a functional group having a carrier transporting property and a tert-butyl substituted structures can effectively improve the electroluminescent properties of the the bicyclo iridium complexes, when the ligand introduced having an amine functional group of the tert-butyl substituted tris-aryl, bicyclic iridium complex matter electroluminescent best performance; (2) in the red electroluminescent phosphorescent devices, PFO for the luminescent properties of the main body of the device is better than for the subject to PVK the luminescent properties of the device, the main material of choice of the shadow of the luminescent properties of the device lt; WP = 4 gt; the the Wuzhong Alliance: Iridium Complexes Synthesis and electrical properties of phosphorescent devices rang larger. In this thesis work laid a solid foundation for the next step to carry out a comprehensive the panchromatic electrical induced phosphorescent materials and devices, performance red, green and blue electroluminescent phosphorescent material and its devices.

Related Dissertations

  1. Metallization Iridium (Ⅲ) Complexes and their luminescent properties of the rigid ring,O641.4
  2. Multi-dimensional charge transport group modify iridium complex design, synthesis and optical properties,O627.8
  3. Blue phosphorescent iridium complex dendritic Design, Synthesis and Properties,O641.4
  4. The Synthesis and Photo/Electro Luminisence Study of Iridium and Zinc Complexes with Oxazoline, Thiazoline and Schiff Base Ligands,O627
  5. The Design and Synthesis of Multifunctional Cationic Iridium Complexes for Efficient Light-emitting Electrochemical Cell,O641.4
  6. Novel organic electroluminescent material and its properties,O482.31
  7. Synthesis and Properties Study of 1,3,4-oxadiazole and Thiadiazole-2-thiol Derivatives and Their Cyclometaled Platinum Complexes,O626.2
  8. The Synthesis and Properties Study of Organic Binuclear Cyclometalated Iridium Complexes Phosphorescent Material with the Bradge of Phenyl Oxdizole/carbazole-based Picolinic Acid,O627
  9. The Synthesis and Properties Study of Cyclometalated Iridium Complexes with Oxadiazole-based Picolinic Acid Which the Liquid-crystal Groups Were Induced into,O621.13
  10. Synthesis and Electroluminescence Properties of Iridium(Ⅲ) Complexes Based on Pyridazine Derivatives with C^n=n Structure,O641.4
  11. Three teeth Ir complexes in alkane dehydrogenation theoretical and catalytic properties,O643.36
  12. Synthesis and Properties of Organic Functional Materials Based on Imidazo(1,2-a)pyridine,O626
  13. Luminescent and Oxygen Sensing Properties of the Transition Metal Ir(Ⅲ) Complex Nanofibers and Ru(Ⅱ) Complex Nanoparticles,TB383.1
  14. Determination of Organophosphorus Content in Nickelous Sulfate and Cobalt Dichloride Solution & Study on Analytical Method of Impurity Elements in Rhodium,O657.3
  15. Synthesis and Photoluminescence Property Study of Novel Oxadiazoles Ligands and Its Complexes,O621.13
  16. Kinetics and Mechanism of Transition Metal Ions Catalyzed Oxidation by Ce(Ⅳ),O643.32
  17. Investigation of Ir Coating on Mo, Nb and C/C Substrates Prepared by Double Glow Plasma,TG174.4
  18. Density Functional Theory Study on Organic Complex Phosphorescent Materials with Iridium Core,O621.13
  19. The Studies of Synthesis, Characterization and Photophysical Properties of New Type Iridium Complexes,O641.4
  20. Study on Structure and Ablation Properties of Iridium Coating on Carbon and Tungsten Carbide,TG174.4
  21. Non-conjugated DA and ADA pyridine- Acid and Its Metal Complexes Synthesis and Properties,O621.13

CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Structural Chemistry > Complex chemistry ( coordination chemistry )
© 2012 www.DissertationTopic.Net  Mobile