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Design of two-photon absorbing fluorophores for FRET antenna-core oxygen probes

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Abstract

Four two-photon absorbing fluorophores A1–A4 are reported and their spectroscopic properties are analyzed for use, in combination with palladium–porphyrinato complexes C1 and C2, as two-photon absorbing antennas and energy donors for FRET-based antenna-core oxygen sensitive phosphorescent probes. The best antenna A3 displaying the highest biphotonic brightness Φ × σTPA = 210 GM at 800 nm was then directly grafted to the phosphorescent Pd–porphyrin cores via click chemistry to give new two-photon oxygen sensitive phosphorescent probes P1 and P2, in which energy transfer from the antenna to the core was demonstrated following two-photon excitation.

Graphical abstract: Design of two-photon absorbing fluorophores for FRET antenna-core oxygen probes

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Publication details

The article was received on 21 Dec 2017, accepted on 31 Jan 2018 and first published on 31 Jan 2018


Article type: Paper
DOI: 10.1039/C7NJ05073A
Citation: New J. Chem., 2018, Advance Article
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    Design of two-photon absorbing fluorophores for FRET antenna-core oxygen probes

    Z. Zheng, M. M. Ayhan, Y. Liao, N. Calin, C. Bucher, C. Andraud and Y. Bretonnière, New J. Chem., 2018, Advance Article , DOI: 10.1039/C7NJ05073A

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