Single-Molecule Luminescence and High Efficiency Photovoltaic Cells Based on Percolated Conducting Carbon Nanotubes Scaffolds Templated with Light-Harvesting Conjugated Polymers and Nanohybrids
Abstract
This project describes the successful preparation of the novel photoelectric material poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene)-grafted multiwall carbon nanotubes(MWCNTs) and some of this material's photoelectric properties. Nanocomposites constructed by surface-grafted multiwall carbon nanotubes (CNTs) with conjugated polymers dispersed in a polymer matrix were synthesized to form novel optoelectronic materials that exploit single-molecule effects. During the course of the execution of the proposal, research work was focused on three parts: 1. the synthesis work of the nanocomposite of light-harvesting polymers on percolated carbon nanotubes, 2. single-molecule luminescence of conjugated polymers as affected by chain confinement effect, and 3. the nano-scale mechanical interactions between the CNTs and the polymer chain in the matrix. These three parts are interlinked in that the grafted polymer layer on CNTs are in fact molecularly confined macromolecules due to the strong pi-pi interactions with the graphene surfaces and the small thickness that imposes large molecular deformation of the anchored chains. Furthermore, nanoscale interactions between the polymer chains and CNTs are very help to reveal the actual packing and dynamic relationship in the nanocomposites. It is also later unveiled that the mechanical characteristics of polymer chains in the sub-molecular level may strongly influence the optoelectronic behavior of the conjugated polymers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 14, 2009
- Accession Number
- ADA494109
Entities
People
- Arnold C.‐M. Yang
Organizations
- National Tsing Hua University