Linghai Xie
Nanjing University of Posts & Telecommunications, China
Title: An attractor-repulsor molecular design prinicple for the exploration of supramolecular Steric Hindrance (SSH) effects
Biography
Biography: Linghai Xie
Abstract
In order to overcome the defect in organic/polymer wide bandgap semiconducors, bulky groups were introduced into molecualar backbone. Our initial motivation is to design the effective bulky groups with concise route such as spirofluorenexanthene (SFX) in order to suppress the pi-pi stacking interactions among backbone. However, we found one phenomenon that supramolecular interaction occur at bulky groups. This observation inspired us to explore the cooperative effect between bulky groups with repulsion and supramolecualr groups with attraction by molecular design. We found a series of supramolecular steric hindrance (SSH) effects on OLEDs, the two-dimensional nanocrystals, beta phase transition in polyfluorenes. The established attractor-repulsor theory (ART) is a new chemical stragety to design supramolecular bulk for organic advanced materials and biomedicine.
