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 language | English |
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Pages (from-to) | 420-424 |
Number of pages | 5 |
Journal | Journal of Microscopy |
Volume | 202 |
Issue number | 2 |
DOIs | |
State | Published - 5 May 2001 |
Keywords
- Conjugated length
- Fluorescence spectrum
- Near-field fluorescence microspectroscopy
- Photothermal change
- Polythiophene film
- Surface morphology