Generating long-wavelength absorption bands with enhanced deep red fluorescence and photothermal performance in fused carbon dots aggregates

By Jun Wu, Josh Haipeng Lei, Bingchen He, Chu-Xia Deng, Zikang Tang, Songnan Qu

January 5, 2022

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Title

Generating long-wavelength absorption bands with enhanced deep red fluorescence and photothermal performance in fused carbon dots aggregates

Author

Jun Wu, Josh Haipeng Lei, Bingchen He, Chu-Xia Deng, Zikang Tang, Songnan Qu

Year

2021

Journal

Aggregate

Abstract

Carbon dots (CDs) with long-wavelength absorptions and emissions are highly desired for biological applications. Herein, we report a new supra-CDs strategy to construct long-wavelength absorption bands based on fused CDs aggregates (f-CDAs) through a concentration-induced interparticle dehydration process among green emissive CDs (r-CDs) under solvothermal treatment. The obtained fused f-CDAs exhibit an obvious absorption band in 550–700 nm and significantly enhanced deep red fluorescence in N,N-dimethylformamide with photoluminescence quantum yields of 15.6% and high photothermal conversion efficiency up to 26.1% in water. Benefiting from the high photothermal performance, in vivo tumor photothermal therapy has been realized via intratumoral injection of f-CDAs under 655 nm laser irradiated at 0.5 W/cm2.

Full Article

https://onlinelibrary.wiley.com/doi/10.1002/agt2.139

Instrument

V-770

Keywords

Carbon dots, (CDs),