Electro-Optical and Electrochemical Properties of a Conjugated Polymer Prepared by the Cyclopolymerization of Diethyl Dipropargylmalonate

Yeong-Soon Gal,Won Seok Lyoo,Jong-Wook Park,Won-Chul Lee,Young-Il Park,Sung-Ho Jin,Kwon Taek Lim

doi:10.1155/2008/276027

Abstract

The electro-optical and electrochemical properties of poly(diethyl dipropargylmalonate) were measured and discussed. Poly(diethyl dipropargylmalonate) prepared by (NBD)PdCl2catalyst was used for study. The chemical structure of poly(diethyl dipropargylmalonate) was characterized by such instrumental methods as NMR (1H-,13C-), IR, and UV-visible spectroscopies to have the conjugated cyclopolymer backbone system. The microstructure analysis of polymer revealed that this polymer have the six-membered ring moieties majorly. The photoluminescence peak of polymer was observed at 543 nm, which is corresponded to the photon energy of 2.51 eV. The cyclovoltamograms of the polymer exhibited the irreversible electrochemical behaviors between the doping and undoping peaks. It was found that the kinetics of the redox process of this conjugated cyclopolymer might be controlled by the diffusion-control process from the experiment of the oxidation current density of polymer versus the scan rate.

Highlights

Considerable progress has been made in the synthesis and optical characterization of conjugated organic polymers [1,2,3]
The synthesis of conjugated polymer via the cyclopolymerization of dipropargyl monomers has been very interesting method for the introduction of conjugated system in the polymer main chain via an alternating intramolecular– intermolecular chain propagation [16, 17]. 1,6-Heptadiyne itself had been polymerized by various initiator systems to give poly(1,6-heptadiyne) with a polyene cyclic structure [17]
We report the electro-optical and electrochemical properties of poly(DEDPM), a representative conjugated cyclopolymer (Figure 1)

Summary

Introduction

Considerable progress has been made in the synthesis and optical characterization of conjugated organic polymers [1,2,3]. To date, the electro-optical and electrochemical properties of the resulting polymer from DEDPM were not systematically characterized. We prepared the conjugated cyclopolymer by the cyclopolymerization of DEDPM by (NBD)PdCl2.

Results

Conclusion