ArticleAngewandte Chemie (International ed. in English)2025
Metal-Bridging Cyclic Bilatriene Analogue Affords Stable π-Radicaloid Dyes with Near-Infrared II Absorption.
Article in Angewandte Chemie (International ed. in English), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Engineering chitosan-based metal oxide and metal nanoparticle composites for organic dye remediation: mechanisms, performance, and future perspectives.RSC advances · 2026Review
- Triply N-Confused Hexaphyrins(1.1.1.1.1.0) Synthesized From N-Confused Hexaphyrin(2.1.1.1.1.1): Aromaticity Modulation, Metal Coordination, and Photothermal Conversion.Angewandte Chemie (International ed. in English) · 2026Article
- Molecular Engineering of Porphyrins for Near-Infrared Bioimaging and Phototherapy.Chemical & biomedical imaging · 2026Review
- Organic small-molecule NIR-II fluorophores for tumor phototheranostics.Light, science & applications · 2026Review
- Open-Chain Tetrapyrroles Meet Metal Ions in the Functional Molecular Material Science.ChemPlusChem · 2025Article
- Metal-Bridging Cyclic Bilatriene Analogue Affords Stable π-Radicaloid Dyes with Near-Infrared II Absorption.Angewandte Chemie (International ed. in English) · 2025Article
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Authors and funding
9 authors.
Funding
Abstract
Stable neutral metal radicaloid complexes have been synthesized from a modified tetrapyrrolic pigment, bilatriene, with iridium(I) and rhodium(I) cyclooctadiene (COD) synthons. The bilatriene skeleton contains α-linked conjugated pyrrole units, whereas an N-confused analogue used in this work possesses β-linked pyrrole moieties at the terminal, demonstrating a unique metal binding capability. Unprecedentedly, the metal-COD cations are accommodated at the outer nitrogen sites, which induced the formation of open-shell metal-radicaloid species. The resulting compounds are highly stable under ambient conditions and demonstrated facile redox conversion to afford the corresponding cation and anion species. Furthermore, the radicaloid complexes showed a distinct second near-infrared absorption (NIR-II) capability extending up to 1500 nm along with high photostability. These features emphasized that the complexes can be potential NIR-II light-responsible photothermal and photoacoustic imaging contrast agents based on the metal-radicaloid dye platform.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.