This thesis introduces a series of novel, non-conjugated polyarylether hosts that are not subject to the triplet-energy limitations of traditional conjugated polymer hosts. As a result of this major breakthrough, the long-standing problem of triplet energy back transfer has now been overcome, making it possible to design high-efficiency electrophosphorescent polymers (PhPs), especially the blue and all-phosphorescent white ones. In addition, the author proposes a spiro-linked hyperbranched architecture for PhPs to inhibit the undesired triplet energy back transfer process in low triplet-energy hosts. The work in this thesis provides vital new insights into the design of PhPs and has led to several publications in high-profile journals.

Nominated by Chinese Academy of Sciences as an outstanding PhD thesis Describes the design of high triplet-energy polymer hosts to overcome the long-standing problem of triplet energy back transfer in traditional conjugated polymer hosts Presents high-efficiency blue and white electrophosphorescent polymers for display and lighting applications Includes supplementary material: sn.pub/extras

Inhalt
General Introduction.- Polyarylether Hosts.- Blue/Yellow Electrophosphorescent Polymers Based on Polyarylether Hosts.- All-Phosphorescent Single-Component White Polymers.- Spiro-Linked Hyperbranched Architecture for Electrophosphorescent Polymers.- Conclusions and Outlook.