Nanoscale Quantitative Chemical Mapping of Conjugated Polymer Blends
- 28 April 2006
- journal article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 6 (6) , 1202-1206
- https://doi.org/10.1021/nl060583w
Abstract
Utilizing scanning transmission X-ray microscopy (STXM), we present a quantitative chemical analysis of the bulk composition of spin-coated blends of poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) (TFB) and poly(9,9‘-dioctylfluorene-co-benzothiadiazole) (F8BT) used in efficient polymer light emitting diodes. With a lateral resolution of 50 nm, we reveal nanoscale subsurface chemical structure and show that in particular while blend composition remains constant within the TFB-rich domain, in the F8BT-rich phase there is an enrichment of F8BT at the domain interface.Keywords
This publication has 15 references indexed in Scilit:
- An interfacial instability in a transient wetting layer leads to lateral phase separation in thin spin-cast polymer-blend filmsNature Materials, 2005
- Correlation between Surface Photovoltage and Blend Morphology in Polyfluorene-Based PhotodiodesNano Letters, 2005
- Surface segregation and self-stratification in blends of spin-cast polyfluorene derivativesJournal of Physics: Condensed Matter, 2005
- Barrier‐Free Electron–Hole Capture in Polymer Blend Heterojunction Light‐Emitting DiodesAdvanced Materials, 2003
- Correlating structure with fluorescence emission in phase-separated conjugated-polymer blendsNature Materials, 2003
- Conjugated polymer blends: linking film morphology to performance of light emitting diodes and photodiodesJournal of Physics: Condensed Matter, 2002
- Charge Generation Kinetics and Transport Mechanisms in Blended Polyfluorene Photovoltaic DevicesNano Letters, 2002
- Photovoltaic Performance and Morphology of Polyfluorene Blends: A Combined Microscopic and Photovoltaic InvestigationMacromolecules, 2001
- NEXAFS spectromicroscopy of polymers: overview and quantitative analysis of polyurethane polymersJournal of Electron Spectroscopy and Related Phenomena, 1999
- The Age of Paraná Flood Volcanism, Rifting of Gondwanaland, and the Jurassic-Cretaceous BoundaryScience, 1992