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The Synthesis and Characterization of Energy-Conducting Polymers with Pendant Inorganic Chromophores

Published online by Cambridge University Press:  01 February 2011

James H. Alstrum-Acevedo ,
Joseph M. DeSimone ,
C. K. Schauer  and
John M. Papanikolas
James H. Alstrum-Acevedo
Affiliation:
University of North Carolina, Department of Chemistry Chapel Hill, NC 27599–3290
Joseph M. DeSimone
Affiliation:
University of North Carolina, Department of Chemistry Chapel Hill, NC 27599–3290
C. K. Schauer
Affiliation:
University of North Carolina, Department of Chemistry Chapel Hill, NC 27599–3290
John M. Papanikolas
Affiliation:
University of North Carolina, Department of Chemistry Chapel Hill, NC 27599–3290
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Abstract

We are interested in the synthesis, characterization, and performance evaluation of functional nanoscale materials comprised of a polymeric scaffold with appended cationic transition-metal lumiphores. We have developed a methodology to prepare, spectroscopically characterize, and evaluate a series of organic copolymers functionalized with inorganic chromophores. Preparation of these hybrid systems first involves the synthesis of a linear AB diblock copolymeric scaffold in which A is polystyrene (PS) and B is poly(p-tert-butoxycarbonyloxystyrene) (PStBOC), using Reversible Addition-Fragmentation chain-Transfer (RAFT) radical polymerization. The PStBOC block (B) was converted into poly(4-hydroxystyrene) by acid hydrolysis of the t-BOC moieties, and Ru(II) trisbipyridyl complexes were covalently appended using standard ester coupling reagents. These lumiphores were selected due to their strong absorbance in the visible spectrum, chemical/photochemical stability, useful redox properties, and long-lived excited state lifetimes. Attachment of the cationic transition-metal chromophores to block B of these linear AB diblock copolymeric arrays is expected to promote solid-state self-assembly into nanoscale structures. The metal-loaded macromolecular assemblies were characterized spectroscopically and the determination of the solid-state morphology of films of these materials was investigated using Transmission Electron Microscopy (TEM).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 847: Symposium EE – Organic/Inorganic Hybrid Materials , 2004 , EE8.10
Copyright
Copyright © Materials Research Society 2005

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References

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