Polyester-tethered near-infrared fluorophores confined in colloidal nanoparticles: tunable and thermoresponsive aggregation and biomedical applications
Intricate assembly of multiple molecular chromophores assisted by protein scaffolds is essential in tuning the optical absorption and energy transfer in the light-harvesting complexes of the photosynthetic systems in nature. However, it remains a challenge to achieve such structural complexity and f...
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| Main Authors: | , , , , , , , , , |
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| 其他作者: | |
| 格式: | Article |
| 語言: | English |
| 出版: |
2023
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| 主題: | |
| 在線閱讀: | https://hdl.handle.net/10356/171900 |
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| 總結: | Intricate assembly of multiple molecular chromophores assisted by protein scaffolds is essential in tuning the optical absorption and energy transfer in the light-harvesting complexes of the photosynthetic systems in nature. However, it remains a challenge to achieve such structural complexity and functionality in synthetic polymer-chromophore systems. Here, we report a series of polyester-tethered pyrrolopyrrole cyanine derivatives and their colloidal nanoparticles dispersed in water, which show tunable J- or H-aggregation excitonic coupling and near-infrared fluorescence by precise control of the polymer chain lengths, composition, and temperature. Moreover, the optimal fluorescence or photothermal effect of the J-aggregate nanoparticles enables broad applications in fluorescence or photoacoustic bioimaging and phototherapy. |
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