ChemInform Abstract: Push—Pull Systems Bearing a Quinoid/Aromatic Thieno[3, 2‐b]thiophene Moiety: Synthesis, Ground State Polarization and Second‐Order Nonlinear Properties. Issue 3 (21st January 2014) - Marco, A. Belen; Andreu, Raquel; Franco, Santiago; Garin, Javier; Orduna, Jesus; Villacampa, Belen; Diosdado, Beatriz E.; Lopez Navarrete, Juan T.; Casado, Juan