ArticlePrecision chemistry2025
Dibenzononazethrene Isomers: Stable Singlet Diradicaloids with Efficient Photothermal Conversion.
Article in Precision chemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Isomeric Dibenzodiindenophenanthrene Diradicaloids: Synthesis, Structures, Properties, and Efficient NIR Photothermal Conversion for Imaging.Angewandte Chemie (International ed. in English) · 2026Article
- Air-Stable Luminescent Schlenk Diradical With Triplet Ground State.Angewandte Chemie (International ed. in English) · 2026Article
- The interplay of antiaromaticity and diradical character in diarenoindacenes and diindenoarenes.Chemical science · 2025Review
- Büchner-type ring expansion of aromatic main-group biradicaloids toward phosphorus radical-derived NIR-II photothermal materials.Chemical science · 2025Article
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9 authors.
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Abstract
Organic singlet diradicaloids are promising photothermal agents owing to their exceptional light-harvesting capabilities and efficient light-to-heat conversion. In this study, two stable dibenzononazethrene isomers, DBNZ1 and DBNZ2, are synthesized through a concise method and isolated in crystalline form. An open-shell singlet diradical ground state, with diradical indices of 0.67 and 0.69, is confirmed through a combination of theoretical and experimental approaches. Steady-state and time-resolved absorption spectroscopy demonstrated efficient light absorption in the far-red region and excellent light-to-heat conversion, attributed to a rapid nonradiative process. Encapsulation of DBNZ1 with an amphiphilic polymer produced water-dispersible nanoparticles (DBNZ1-NPs) with enhanced stability, achieving an impressive photothermal conversion efficiency of 72.9%. An
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