Crystalline structure of a conjugated semiconducting copolymer, poly{[2,5-di(2-(2-ethoxy -ethoxy) ethoxy)-1,4- phenylene vinylene]-alt-1,4- [phenylene vinylene]} (DTEO-alt-PV)

POLY 440

Chao-Lin Yeh, Chaolin.yeh@gmail.com, Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan, R.O.C, 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan 30013, R.O.C, Hsinchu, Taiwan, R.O.C, Taiwan
The present study investigates the Crystalline structure of a hairy-rod conjugated copolymer with a poly(phenylenevinylene) backbone and oligo (oxyethylene) (EO) side chains, poly{[2,5-di (2-(2-ethoxy-ethoxy)ethoxy)-1,4-phenylenevinylene]-alt-1,4-[phenylenevinylene]} (DTEO-PV). The SAXS profile and TEM micrograph indicated that the crystal structure of DTEO-alt-PV consist of stiff rod-like PPV segments packed in an orthorhombic unit cell with a = 1.31nm and b = 1.23 nm. The crystalline DTEO-alt-PV melted into an isotropic melted at 152°C. This polymer slef-organized to form a semicrystalline lamellar structure with the interlamellar distance of 60 ~ 70 nm as revealed by TEM micrograph. The objective will be the establishment of the correlation between the supramolecular structure and the photophysical properties.
 

Conjugated Polymer Materials and Hybrids: Synthesis, Macromolecular Assemblies, and Nanostructures
6:00 PM-8:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Polymer Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007