ArticleChemical science2019
Unusual near infrared (NIR) fluorescent palladium(ii) macrocyclic complexes containing M-C bonds with bioimaging capability.
Article in Chemical science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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Who cites it
4 citing papers in PubMed, 27 citations in OpenAlex.
- Luminescence and Palladium: The Odd Couple.Molecules (Basel, Switzerland) · 2023Review
- Luminescent Metal Complexes for Bioassays in the Near-Infrared (NIR) Region.Topics in current chemistry (Cham) · 2022Review
- Neo-Porphyrinoids: New Members of the Porphyrinoid Family.Topics in current chemistry (Cham) · 2021Review
- Recent Advances in Luminescence Imaging of Biological Systems Using Lanthanide(III) Luminescent Complexes.Molecules (Basel, Switzerland) · 2020Review
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Near infrared (NIR) luminescent metal complexes are promising probes in bioimaging and biosensing, however they generally suffer from oxygen interference arising from heavy metal effects. We designed new tetradentate macrocyclic benzitripyrrin (C^N^N^N) ligands by combination of M-C bond formation and reducing the π-conjugation to achieve NIR fluorescent Pd complexes (700-1000 nm) with quantum yields up to 14%. To understand the origin of NIR fluorescence, detailed analyses by density functional theory/time-dependent density functional theory (DFT/TDDFT) calculations together with femtosecond and nanosecond transient absorption spectroscopies suggest that M-C bond formation indeed leads to destabilization of the d-d excited state and less effective quenching of emission; and importantly, small spin-orbital coupling (SOC) and the large singlet-triplet energy gap are the primary causes of the non-population of triplet states. Comparison of Pd
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Registered trials
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