Morphology, fluorescence properties, and their photothermal changes of poly(substituted thiophene) films revealed by near-field fluorescence microspectroscopy

N. Kurokawa, H. Yoshikawa, Hiroshi Masuhara*, N. Hirota, K. Hyodo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The morphology and fluorescence spectrum of poly{3-[2-(N-dodecylcarbamoyloxy)ethyl]thiophene-2,5-diyl} film were examined with spatial resolution of 100 nm using near-field fluorescence microspectroscopy. Fluorescence spectra observed at protruding domains were blue-shifted compared with flat areas, and further blue-shift was observed there more appreciably by long-time irradiation via a near-field scanning optical microscope probe. It is considered that the polymer chains at the protruding domains take disordered conformations, in which conjugated lengths are shorter and further disordering can be induced more easily by irradiation compared with those in the flat areas.

Original languageEnglish
Pages (from-to)420-424
Number of pages5
JournalJournal of Microscopy
Volume202
Issue number2
DOIs
StatePublished - 5 May 2001

Keywords

  • Conjugated length
  • Fluorescence spectrum
  • Near-field fluorescence microspectroscopy
  • Photothermal change
  • Polythiophene film
  • Surface morphology

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