Fluorescence enhancement of pyrene chromophores induced by alkyl groups through σ–π conjugation: systematic synthesis of primary, secondary, and tertiary …

Y Niko, S Kawauchi, S Otsu, K Tokumaru…

Index: Niko, Yosuke; Kawauchi, Susumu; Otsu, Shun; Tokumaru, Katsumi; Konishi, Gen-Ichi Journal of Organic Chemistry, 2013 , vol. 78, # 7 p. 3196 - 3207

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Citation Number: 45

Abstract

We have systematically synthesized 1-, 3-, 6-, and 8-alkyl-substituted pyrene derivatives using the latest synthesis methods and investigated the effects of alkyl substitution on the photophysical properties of the pyrene chromophore. Like the trimethylsilyl group, which is known to enhance the fluorescence properties of some chromophores through σ*− π* conjugation, alkyl groups (primary, secondary, and tertiary) enhanced the fluorescence ...