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- W4200477607 endingPage "2108048" @default.
- W4200477607 startingPage "2108048" @default.
- W4200477607 abstract "Organic materials with radical characteristics are gaining increasing attention, due to their potential implications in highly efficient utilization of solar energy. Manipulating intermolecular interactions is crucial for tuning radical properties, as well as regulating their absorption bands, and thus improving the photothermal conversion efficiency. Herein, a diradical-featured organic small-molecule croconium derivative, CR-DPA-T, is reported for highly efficient utilization of solar energy. Upon aggregation, CR-DPA-T exists in dimer form, stabilized by the strong intermolecular π-π interactions, and exhibits a rarely reported high-spin state. Benefiting from the synergic effects of radical characteristics and strong intermolecular π-π interactions, CR-DPA-T powder absorbs broadly from 300 to 2000 nm. In-depth investigations with transient absorption analysis reveal that the strong intermolecular π-π interactions can promote nonradiative relaxation by accelerating internal conversion and facilitating intermolecular charge transfer (ICT) between dimeric molecules to open up faster internal conversion pathways. Remarkably, CR-DPA-T powder demonstrates a high photothermal efficiency of 79.5% under 808 nm laser irradiation. By employing CR-DPA-T as a solar harvester, a CR-DPA-T-loaded flexible self-healing poly(dimethylsiloxane) (H-PDMS) film, named as H-PDMS/CR-DPA-T self-healing film, is fabricated and employed for solar-thermal applications. These findings provide a feasible guideline for developing highly efficient diradical-featured organic photothermal materials." @default.
- W4200477607 created "2021-12-31" @default.
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- W4200477607 date "2022-01-20" @default.
- W4200477607 modified "2023-10-16" @default.
- W4200477607 title "Diradical‐Featured Organic Small‐Molecule Photothermal Material with High‐Spin State in Dimers for Ultra‐Broadband Solar Energy Harvesting" @default.
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- W4200477607 doi "https://doi.org/10.1002/adma.202108048" @default.
- W4200477607 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34882850" @default.
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