Nanoscopic interchain aggregate domain formation in conjugated polymer films studied by third harmonic generation near-field scanning optical microscopy

Richard D. Schaller, Preston T. Snee, Justin C. Johnson, Lynn F. Lee, Kevin R. Wilson, Louis H. Haber, Richard J. Saykally, Thuc Quyen Nguyen, Benjamin J. Schwartz

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Abstract

Third-harmonic generation (THG) near-field scanning optical microscopy (NSOM) was used to investigate both as-cast and thermally annealed films of poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene vinylene] (MEH-PPV). Many small domains with increased ground-state π-electron delocalization were observed in the thermally annealed films. The results indicate that the ground-state electronic properties of conjugated polymer films become highly inhomogeneous upon annealing.

Original languageEnglish
Pages (from-to)6688-6698
Number of pages11
JournalJournal of Chemical Physics
Volume117
Issue number14
DOIs
Publication statusPublished - Oct 8 2002

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Schaller, R. D., Snee, P. T., Johnson, J. C., Lee, L. F., Wilson, K. R., Haber, L. H., Saykally, R. J., Nguyen, T. Q., & Schwartz, B. J. (2002). Nanoscopic interchain aggregate domain formation in conjugated polymer films studied by third harmonic generation near-field scanning optical microscopy. Journal of Chemical Physics, 117(14), 6688-6698. https://doi.org/10.1063/1.1499479