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Issue 12, 2001
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Abstract

UV-vis and fluorescence spectroscopy of poly(phenylenevinylene) derivatives were acquired at low temperature (−108 °C). Noticeable spectroscopic red-shifts (as large as 17 nm) were detected from both polymers and model compounds in solutions when the temperature was decreased from 25 °C to −108 °C, indicating that the molecules adopted a more planar conformation at the low temperature. The low temperature spectra revealed the hidden structured absorption and emission. The vibrational structures in the fluorescence spectra were analyzed by using the obtained spectroscopic data at the low temperature. The very similar spectroscopic properties between the polymers (1 and 2) and their model compounds (3 and 4) strongly suggested that the observed spectroscopic red-shift from the polymers at the low temperature was an intrinsic property of the chromophore.

Graphical abstract: A study on the vibrational structure of poly(phenylenevinylene)s via low-temperature UV-vis and fluorescence spectroscopy

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Article information


Submitted
30 Jul 2001
Accepted
18 Sep 2001
First published
01 Nov 2001

J. Mater. Chem., 2001,11, 3078-3081
Article type
Paper

A study on the vibrational structure of poly(phenylenevinylene)s via low-temperature UV-vis and fluorescence spectroscopy

L. Liao and Y. Pang, J. Mater. Chem., 2001, 11, 3078
DOI: 10.1039/B106855E

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