Single-benzene-based clickable fluorophores for in vitro and in vivo bioimaging

26 February 2024, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

A series of clickable single-benzene-based fluorophores derived from tetrafluoroterephthalonitrile (4F-2CN) is reported. Fluorophores based on a tetrahydroquinoxaline skeleton (2F-2CN-(β-NH2Ala)) exhibited improved photophysical properties owing to better planarity and conjugation over those with dihydro[1,4]thiazine skeleton (2F-2CN-Cys). These easily produced clickable fluorophores were successfully applied in in vitro and in vivo bioimaging after protein conjugation.

Keywords

Single-benzene-based fluorophore
Thiol-ene click reaction
Bioconjugation
Bioimaging
Actin filaments

Supplementary materials

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Supporting Information
Description
Experimental procedures and characterisation data for all new compounds, copies of UV/vis and fluorescence as well as 1H, 13C and 19F NMR spectra, XRD data for compound 9 and additional compounds, and experimental details for protein labelling studies and bioimaging.
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