Photooxidation triggered ultralong afterglow in carbon nanodots

© 2024. The Author(s)..

It remains a challenge to obtain biocompatible afterglow materials with long emission wavelengths, durable lifetimes, and good water solubility. Herein we develop a photooxidation strategy to construct near-infrared afterglow carbon nanodots with an extra-long lifetime of up to 5.9 h, comparable to that of the well-known rare-earth or organic long-persistent luminescent materials. Intriguingly, size-dependent afterglow lifetime evolution from 3.4 to 5.9 h has been observed from the carbon nanodots systems in aqueous solution. With structural/ultrafast dynamics analysis and density functional theory simulations, we reveal that the persistent luminescence in carbon nanodots is activated by a photooxidation-induced dioxetane intermediate, which can slowly release and convert energy into luminous emission via the steric hindrance effect of nanoparticles. With the persistent near-infrared luminescence, tissue penetration depth of 20 mm can be achieved. Thanks to the high signal-to-background ratio, biological safety and cancer-specific targeting ability of carbon nanodots, ultralong-afterglow guided surgery has been successfully performed on mice model to remove tumor tissues accurately, demonstrating potential clinical applications. These results may facilitate the development of long-lasting luminescent materials for precision tumor resection.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:15

Enthalten in:

Nature communications - 15(2024), 1 vom: 15. März, Seite 2365

Sprache:

Englisch

Beteiligte Personen:

Zheng, Guang-Song [VerfasserIn]
Shen, Cheng-Long [VerfasserIn]
Niu, Chun-Yao [VerfasserIn]
Lou, Qing [VerfasserIn]
Jiang, Tian-Ci [VerfasserIn]
Li, Peng-Fei [VerfasserIn]
Shi, Xiao-Jing [VerfasserIn]
Song, Run-Wei [VerfasserIn]
Deng, Yuan [VerfasserIn]
Lv, Chao-Fan [VerfasserIn]
Liu, Kai-Kai [VerfasserIn]
Zang, Jin-Hao [VerfasserIn]
Cheng, Zhe [VerfasserIn]
Dong, Lin [VerfasserIn]
Shan, Chong-Xin [VerfasserIn]

Links:

Volltext

Themen:

Journal Article

Anmerkungen:

Date Completed 18.03.2024

Date Revised 18.03.2024

published: Electronic

Citation Status MEDLINE

doi:

10.1038/s41467-024-46668-z

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369806921