The Two-Photon Excited Fluorescence of Pyrazine Derivatives

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Abstract:

A series of multi-branched pyrazine derivatives have been synthesized, of which, the two-branched one with para-branching pattern shows much enhanced two-photon absorption cross section (σ) than that with meta-branching pattern (1.8 times). The three-branched pyrazine derivative, in which the branches are at ortho- or para-position, show strong two-photon absorption properties (σ=753GM), while its s-triazine analogue TSTA, with all the branches in meta-position, exhibit too weak two-photon excited fluorescence to be detected. These results indicate great effects of branching pattern on two-photon absorption.

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Advanced Materials Research (Volumes 535-537)

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1266-1269

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June 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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