Use of the beta-phase of poly(9,9-dioctylfluorene) as a probe into the interfacial interplay for the mixed bilayer films formed by sequential spin-coating

The Journal of Physical Chemistry. B
Rui ZhuYong Cao

Abstract

Spin-coating one polymer solution on another spin-cast polymer film is believed to result in unfavorable interfacial mixing. Here, we show some results to demonstrate that some interesting properties will be obtained in such mixed bilayer films formed by sequential spin-coating. Poly(9-vinylcarbazole) and poly(9,9-dioctylfluorene-2,7-diyl) were chosen as the first and second polymer layers, respectively. By varying the initial thickness of the first layer, some interesting variations were observed. The spectroscopic features of beta-phase polyfluorene were utilized to reflect the variations at the complicated interface. Morphologies were also presented to illustrate that the variations of spectroscopic features were accompanied with some interesting morphological changes. On the basis of these results, a schematic model was proposed to gain insight into the mixed interface formed by sequential spin-coating. Polymer light-emitting devices based on such films were also investigated.

References

Feb 21, 2003·Nature·C David MüllerKlaus Meerholz
Apr 7, 2006·Nature·Tatsuya ShimodaYasumasa Takeuchi
Dec 15, 2000·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·D C MüllerK Meerholz

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Citations

Mar 17, 2011·The Journal of Chemical Physics·L A CuryA P Monkman
Oct 12, 2010·Physical Chemistry Chemical Physics : PCCP·Takayuki MiyamaeWataru Mizutani
Aug 10, 2011·Advanced Materials·Rui ZhuYang Yang
Sep 4, 2013·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Ling-Hai XieWei Huang
Jan 7, 2014·The Journal of Physical Chemistry. B·Long HuangDan Lu
Dec 22, 2010·The Journal of Physical Chemistry. B·Run-Feng ChenWei Huang

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