Title：Assessment of molecular brush architectures for advanced OLED/PLED technologies
Lecturer：Doctor Guorong Sun (Texas A&M University, USA)
Time：2:00p.m. ,Sept 26th,2019(Thursday)
Place：Room 210, Chemistry Building(West)
Abstract：
It has been recognized for several decades that the architecture or topology of macromolecules affects their physical, chemical, biological, and mechanical properties. With the architectures of linear, dendritic, graft, star, and crosslinked polymers having been studied extensively, many such materials form the foundation of solution-processable organic/polymer light-emitting diodes (OLEDs/PLEDs) technologies. Highly-grafted polymers, which possess a molecular bottlebrush architecture, have been studied to a much less extent, yet they also hold high potential for the development of advanced OLEDs/PLEDs.
This presentation will highlight our recent progress on developing a novel hole transporting molecular bottlebrush polymer that can achieve unprecedented high degrees of anisotropic “face-on” alignment of the nonplanar triphenylamine hole transport moieties in the solution-cast hole transport layer film. The overall strategy and the structure-property relationship between obtained anisotropic data with polymer topology, monomer selection, and film processing effect will be presented in detail. Preliminary data indicate facile charge transport is commensurate with a high degree of anisotropic alignment, which demonstrates the topological design strategy is of great usefulness for solution-processable films with high charge mobilities.
About the lecturer：
Dr. GuorongSun received his Ph.D. in polymer chemistry in 2009 from Washington University in St Louis under the supervision of Professor Karen L. Wooley. He continued his postdoctoral training with Prof. Wooley and presently works as a Senior Scientist in the Wooley group at Texas A&M University, USA. His current research focuses on the exploration of intricate molecular bottlebrush-based electronic materials, as well as the developments of advanced nanomaterials for imaging guided cancer therapy.
