SEARCH Articles Figures Tables Acyl with electron donating substituents Electron donating groups substituent effects Electron donating substituent effect Electron donation Electron substituents Electron-donating ester substituent Electron-donating substituents Electron-donating substituents Electronic parameters Poly(p-Phenylene Vinylene) Homopolymers with Electron-Withdrawing and Donating Substituents Regioselectivity electron-donating substituents Substituent effects conjugative electron donation