Luminescence: The Never-Ending Story; Luminescent Metal-Containing Polymers for White Light Emission; Abstract; 1 Introduction; 2 Iridium(III)-Based Polymers; 2.1 Iridium(III)-Based Main Chain Conjugated Polymers; 2.2 Iridium(III)-Based Side Chain Conjugated Polymers; 2.3 Iridium(III)-Based Side Chain Non-Conjugated Polymers; 2.4 Iridium(III)-Based Chelating Polymers; 2.5 Iridium(III)-Based Dendritic Polymers; 3 White Light-Emitting Polymers Based on Other Metals; 4 Conclusions; Acknowledgments; References

Luminescent Iridium Complexes Used in Light-Emitting Electrochemical Cells (LEECs)Abstract; 1 Introduction; 2 [Ir(ppy)2(bpy)](PF6); 2.1 Syntheses; 2.2 Photophysics; 2.3 Devices; 3 Blue; 3.1 Efficiency; 3.2 Stability; 4 Green; 4.1 Efficiency; 4.2 Stability; 5 Yellow/orange; 5.1 Efficiency; 5.2 Stability; 6 Red; 6.1 Efficiency; 6.2 Stability; 7 White; 7.1 Host-guest LEECs; 7.2 Multilayer LEECs; 8 Conclusions and Outlook; Acknowledgments; References; Platinum and Gold Complexes for OLEDs; Abstract; 1 Introduction and Scope; 2 Development of Luminescent Platinum(II) Complexes

2.1 Platinum(II) Complexes with Bidentate N-Donor Ligands2.2 Platinum(II) Complexes with Tridentate N-Donor Ligands; 2.3 Cyclometalated Platinum(II) Complexes; 2.3.1 Cyclometalated Platinum(II) Complexes with Bidentate Ligands; 2.3.2 Cyclometalated Platinum(II) Complexes with Tridentate Ligands; 2.3.3 Cyclometalated Platinum(II) Complexes with C^N^N Ligands; 2.3.4 Cyclometalated Platinum(II) Complexes with C^N^C Ligands; 2.3.5 Cyclometalated Platinum(II) Complexes with N^C^N and N^N^N Ligands; 2.3.6 Cyclometalated Platinum(II) Complexes with Tetradentate Ligands

3 Luminescent Gold(III) Complexes for OLED Applications3.1 Cyclometalated Gold(III) Complexes with C^N^C Ligands; 4 Conclusions; Acknowledgments; References; Phosphorescent Neutral Iridium (III) Complexes for Organic Light-Emitting Diodes; Abstract; 1 Introduction; 2 Photophysics of Cyclometalated Iridium (III) Complexes; 2.1 Photoexcitation to the Excited States; 2.2 Excited-State Photophysics; 2.3 Photophysics in a Condensed State; 3 Iridium (III) Phosphorescent Emitters; 3.1 Structures and Syntheses; 3.2 Color Tuning of Iridium (III) Complexes; 4 Iridium (III) Phosphors for OLEDs

4.1 Green-Emitting Iridium (III) Phosphors4.2 Red-Emitting Ir(III) Phosphors; 4.3 Yellow- and Orange-Emitting Iridium (III) Phosphors; 4.4 Blue-Emitting Iridium (III) Phosphors; Acknowledgments; References; Copper(I) Complexes for Thermally Activated Delayed Fluorescence: From Photophysical to Device Properties; Abstract; 1 Introduction; 1.1 Exciton Harvesting Mechanisms and Historical Developments; 1.1.1 Fluorescent Emitters; 1.1.2 Phosphorescent Emitters; 1.1.3 TADF Emitters; 2 Luminescent Cu(I) Emitters: A Brief Overview; 2.1 Mononuclear Compounds; 2.2 Dinuclear Compounds