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Counterion Exchange Enhances the Brightness and Photostability of a Fluorous Cyanine Dye

17 June 2024, Version 1
Working Paper
This content is an early or alternative research output and has not been peer-reviewed by Cambridge University Press at the time of posting.

Abstract

We leveraged the low dielectric constant of the fluorous phase to improve the photophysical properties of a fluorous pentamethine dye (FCy5) via counterion exchange. We found that larger aryl borate counterions promote charge delocalization across the polymethine chain and increase the photostability (55-fold) and brightness (6-fold) of FCy5.

Keywords

fluorofluorophore
counterion
photostability
ideal polymethine state
perfluorocarbon

Supplementary materials

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Description
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Title
Counterion Exchange Enhances the Brightness and Photostability of a Fluorous Cyanine Dye
Description
This document contains: supporting figures, tables, synthetic chemical procedures, photophysical measurements, photobleaching studies and nuclear magnetic resonance spectra
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Version History

Jun 17, 2024 Version 1

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License

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BY
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The content is available under CC BY NC ND 4.0 [opens in a new tab]

DOI

10.26434/chemrxiv-2024-3rvk6
D O I: 10.26434/chemrxiv-2024-3rvk6 [opens in a new tab]

Funding

NSF GRFP
DGE-20348
NIGMS
5RO1GM135380
UCLA
Dissertation Year Fellowship

Author’s competing interest statement

The author(s) have declared they have no conflict of interest with regard to this content

Ethics

The author(s) have declared ethics committee/IRB approval is not relevant to this content

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