Water/Methanol-Soluble Conjugated Copolymer as an Electron-Transport Layer in Polymer Light-Emitting Diodes By courtesy of: Wanli Ma, Parameswar K. Iyer, Xiong Gong*, Bin Liu, Daniel Moses, Guillermo C. Bazan, and Alan J. Heeger Adv. Mater. 2005, 17, 3, 274