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In situ orderly self-assembly strategy affording NIR-II-J-aggregates for in vivo imaging and surgical navigation
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In situ orderly self-assembly strategy affording NIR-II-J-aggregates for in vivo imaging and surgical navigation
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Journal Article
In situ orderly self-assembly strategy affording NIR-II-J-aggregates for in vivo imaging and surgical navigation
2023
Overview
J-aggregation, an effective strategy to extend wavelength, has been considered as a promising method for constructing NIR-II fluorophores. However, due to weak intermolecular interactions, conventional J-aggregates are easily decomposed into monomers in the biological environment. Although adding external carriers could help conventional J-aggregates stabilize, such methods still suffer from high-concentration dependence and are unsuitable for activatable probes design. Besides, these carriers-assisted nanoparticles are risky of disassembly in lipophilic environment. Herein, by fusing the precipitated dye (HPQ) which has orderly self-assembly structure, onto simple hemi-cyanine conjugated system, we construct a series of activatable, high-stability NIR-II-J-aggregates which overcome conventional J-aggregates carrier’s dependence and could in situ self-assembly in vivo. Further, we employ the NIR-II-J-aggregates probe HPQ-Zzh-B to achieve the long-term in situ imaging of tumor and precise tumor resection by NIR-II imaging navigation for reducing lung metastasis. We believe this strategy will advance the development of controllable NIR-II-J-aggregates and precise bioimaging in vivo.
J-aggregation, is an effective strategy to extend the wavelength of organic NIR-II fluorescence dyes but weak intermolecular interactions often lead to decomposition of the aggregates in biological environment. Here, the authors demonstrate a series of activatable quinazoline derivatives which can self-assemble in vivo into highly stable NIR-IIJ-aggregates.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
