The nature of interchain excitations in conjugated polymers: Spatially-varying interfacial solvatochromism of annealed MEH-PPV films studied by near-field scanning optical microscopy (NSOM)

Richard D. Schaller, Lynn F. Lee, Justin C. Johnson, Louis H. Haber, Richard J. Saykally, John Vieceli, Ilan Benjamin, Thuc Quyen Nguyen, Benjamin J. Schwartz

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

The nature of interchain excitations in conjugated polymers was discussed. The spatially-varying solvatochromism of annealed poly(2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene vinylene) (MEH-PPV) films were studied by near-field scanning optical microscopy (NSOM). The solvatochromic spectral shifts of the interfacial luminescence were measured as a function of solvent polarity. The results were analyzed with an interfacial dielectric continuum model to determine the dipole moment of emissive excited states.

Original languageEnglish
Pages (from-to)9496-9506
Number of pages11
JournalJournal of Physical Chemistry B
Volume106
Issue number37
DOIs
Publication statusPublished - Sep 19 2002

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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