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Issue 10, 2018
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Introduction of various substitutions to the methine bridge of heptamethine cyanine dyes Via substituted dianil linkers

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Abstract

The unique optical properties of cyanine dyes have prompted their use in numerous applications. Heptamethine cyanines are commonly modified on the methine bridge after synthesis of a meso-chlorine containing cyanine. Herein, a series of heptamethine cyanines containing modified methine bridges were synthesized using substituted dianil linkers. Their optical properties including, molar absorptivity, fluorescence, and quantum yield were measured as well as their hydrophobic effects in polar buffer solution. It was shown that dyes containing cyclopentene in the methine bridge or a phenyl ring in the meso position display increased molar absorptivity while the increased flexibility of the dye containing a cycloheptene in the methine bridge prevented fluorescence.

Graphical abstract: Introduction of various substitutions to the methine bridge of heptamethine cyanine dyes Via substituted dianil linkers

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Publication details

The article was received on 29 May 2018, accepted on 10 Sep 2018 and first published on 20 Sep 2018


Article type: Paper
DOI: 10.1039/C8PP00218E
Citation: Photochem. Photobiol. Sci., 2018,17, 1409-1416
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    Introduction of various substitutions to the methine bridge of heptamethine cyanine dyes Via substituted dianil linkers

    A. Levitz, F. Marmarchi and M. Henary, Photochem. Photobiol. Sci., 2018, 17, 1409
    DOI: 10.1039/C8PP00218E

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