Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 13, Issue 5, Pages 1743-1753Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0cp01729a
Keywords
-
Funding
- Japan Society for the Promotion of Science [22750122, 20340109]
- Kurata Grant
Ask authors/readers for more resources
We investigated exciton migration, trapping and emission processes occurring within a single conjugated polymer molecule by means of superresolution fluorescence localization microscopy. This methodology allowed us to locate the spatial distribution of emitting sites within single chains with nanometre precision. The study was done on individual poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) molecules with average molecular weights ranging from 215 000 to 1 440 000 and with narrow weight distributions. We found that the mean emission intensity increases proportionally to the polymer molecular weight. The localization experiments suggest that the emitting sites are distributed nearly uniformly within a single chain and that the sites are on average 10 nm apart, irrespective of the molecular weight of the polymer. Furthermore, spatial contours formed by all the combined emitting sites within one chain show elongated shapes, in agreement with a rod-like structure of MEH-PPV in a collapsed state.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available