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

doi:10.1046/j.1365-2818.2001.00792.x

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

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	420-424
Number of pages	5
Journal	Journal of Microscopy
Volume	202
Issue number	2
DOIs	https://doi.org/10.1046/j.1365-2818.2001.00792.x
State	Published - 5 May 2001

Keywords

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

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

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.",

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author = "N. Kurokawa and H. Yoshikawa and Hiroshi Masuhara and N. Hirota and K. Hyodo",

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AU - Kurokawa, N.

AU - Yoshikawa, H.

AU - Masuhara, Hiroshi

AU - Hirota, N.

AU - Hyodo, K.

PY - 2001/5/5

Y1 - 2001/5/5

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AB - 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.

KW - Conjugated length

KW - Fluorescence spectrum

KW - Near-field fluorescence microspectroscopy

KW - Photothermal change

KW - Polythiophene film

KW - Surface morphology

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