Search: onr:"swepub:oai:DiVA.org:umu-6542" >
Morphology and Envi...
Morphology and Environment-Dependent Fluorescence in Blends Containing a Phenylenevinylene Conjugated Polymer.
-
Summers, Melissa A. (author)
-
Burrato, Steven K. (author)
-
- Edman, Ludvig (author)
- Umeå universitet,Institutionen för fysik
-
(creator_code:org_t)
- 2007
- 2007
- English.
-
In: Thin Solid Films. ; 515, s. 8412-8418
- Related links:
-
https://urn.kb.se/re...
Abstract
Subject headings
Close
- Near-field scanning optical microscopy and single molecule spectroscopy have been employed to study a large number of blends containing a highly fluorescent and amorphous conjugated polymer, ‘superyellow’ (a phenylenevinylene copolymer). We find that blend films with a non-fluorescent and semi-crystalline polymer, poly(ethylene oxide) (PEO), with a superyellow content between 9 and 50 mass% exhibit phase separation with no evidence for admixing of the two components, while films with a lower superyellow content of ≤ 1 mass% content comprise a solid-state solution of superyellow within a crystalline PEO matrix. Interestingly, films with approximately the same amount of superyellow as PEO (similar to those used in, e.g., light-emitting electrochemical cells) exhibit a bi-continuous network morphology. We also report that the superyellow fluorescence spectrum shows a remarkable sensitivity to the physical and chemical environment of superyellow.
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database