The Heck polycondensation for functional polymers

In this account, our own work in the synthesis of functionalized poly(p-phenylenevinylene)s (PPVs) for electrooptic applications via the Pd-catalyzed Heck polycondensation is summarized. It was shown that various functionalized PPVs could be synthesized by the Pd-catalyzed Heck reaction due to its mild reaction condition. These materials show interesting physical properties, ranging from non-linear optical effects, photorefractive effect, photovoltaic property to liquid crystallinity. These results demonstrate the versatile utility of the Heck reaction in synthesis of functional materials. 1 Introduction 2 Synthesis of Poly(p-phenylenevinylene)s (PPVs) by the Pd-Catalyzed Heck Reaction 2.1 Conjugated Liquid Crystalline Polymers 2.2 Synthesis of PPVs Functionalized with Non-Linear Optical (NLO) Chromophore 2.3 Regiospecifically Functionalized PPVs 3 Synthesis of PPVs Containing Metal Complexes by the Pd-Catalyzed Heck Reaction 3.1 Metalloporphyrin-Containing PPVs 3.2 Synthesis of PPVs Containing Ionic Transition-Metal Complexes 3.3 Conjugated Polymers Containing Mixed-Ligand Ruthenium(II) Complexes 4 Orthogonal Approach to Oligo(phenylenevinylene) and Phenylenevinylene Dendrimers and Synthesis of Diblock Copolymers 4.1 Stepwise Synthesis of Substituted Oligo(phenylenevinylene) via an Orthogonal Approach 4.2 A Simple Orthogonal Approach to Phenylenevinylene Dendrimers 4.3 Synthesis of Diblock Copolymers Containing a Conjugated Block 5 Synthesis of Functionalized PPVs for Chemoselective Ligation 6 Conclusion.