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Issue 7, 2003
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Synthesis and photophysical properties of new two-photon absorption chromophores containing a diacetylene moiety as the central π-bridge

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Abstract

We report two-photon absorption properties of newly synthesized compounds consisting of styrylpyridines or their triflates linked by a diacetylene π-bridge in a symmetric way as well as the compounds containing the same substituent groups linked by a phenylenevinylene-type π-bridge. Femtosecond open aperture Z-scan measurements revealed that the two-photon absorption cross-sections σ(2) of the diacetylene compounds in DMSO were in the order of 10−48 cm4 s molecule−1 photon−1 in the wavelength range of 650–800 nm. The largest value was found to be 8.50 × 10−48 cm4 s molecule−1 photon−1 at 764 nm for the methoxy-substituted triflate of the diacetylene compound. This value is one of the largest values obtained for molecules of a similar size by use of femtosecond pulses, indicating that the incorporation of the diacetylene moiety as the π-bridge would be useful for two-photon dyes.

Graphical abstract: Synthesis and photophysical properties of new two-photon absorption chromophores containing a diacetylene moiety as the central π-bridge

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Publication details

The article was received on 15 Nov 2002, accepted on 22 Apr 2003 and first published on 14 May 2003


Article type: Paper
DOI: 10.1039/B211268J
Citation: J. Mater. Chem., 2003,13, 1575-1581
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    Synthesis and photophysical properties of new two-photon absorption chromophores containing a diacetylene moiety as the central π-bridge

    Y. Iwase, K. Kamada, K. Ohta and K. Kondo, J. Mater. Chem., 2003, 13, 1575
    DOI: 10.1039/B211268J

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