Cited by 16Nanoplatforms for cancer theranosticsLuminescence and Fluorescent MaterialsPhotodynamic Therapy Research Studies

High‐Efficiency Organic Semiconducting Small Molecule for Deep‐Tissue Phototheranostics: Single 1064 nm Laser Triggered NIR‐IIb Fluorescence Imaging Guided Type‐I Photodynamic/Photothermal Combination Therapy

Wang, Qi, Liu, Jiawei, Yang, Linqiang, Tao, Ze, Feng, Jianfeng, Li, Sheng, Wang, Xiaoyuan, Gao, Liang +2 more·2025·Advanced Functional Materials

Abstract

Organic semiconducting small molecules that simultaneously possess NIR‐IIb (1500–1700 nm) fluorescence imaging (FLI), hypoxia‐tolerant photodynamic therapy (PDT) as well as photothermal therapy (PTT) abilities activated by a single NIR‐II (1000‐1700 nm) light can achieve high‐performance deep‐tissue phototheranostics, but have not gain much attention. Herein, a novel organic semiconducting small molecule (DTT) with an absorption maximum at 844 nm and an emission maximum at 944 nm in its monomer state is synthesized through delicate molecular design. Surprisingly, the emission spectrum of DTT can extend into NIR‐IIb region. Subsequently, phototheranostic nanoparticles (DTT NPs) with a dramatically red‐shifted maximum absorption/emission peak (1029/1128 nm) are skillfully developed based on the J‐aggregation strategy, which show a greatly high molar absorptivity in NIR‐II region. Upon 1064 nm excitation, high resolution NIR‐IIb FLI can be achieved in whole‐body vessels, cerebral vasculatures, and tumors of living mice treated with DTT NPs. Moreover, DTT NPs can also produce type‐I reactive oxygen species and hyperthermia under 1064 nm laser irradiation for oxygen‐less‐dependent type‐I PDT and PTT combination therapy, eventually achieving efficient antitumor effects. This work provides a facile strategy of designing high‐efficiency small molecules for deep‐tissue phototheranostics.

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Crossref · 10.1002/adfm.202423165

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  • Cyano derivatives such as malononitrile are essential electron acceptors for designing NIR-II fluorescent probes.

    “Cyano derivatives, such as malononitrile, are essential electron acceptors for designing NIR-II fluorescent probes”

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Authors
Wang, Q., Liu, J., Yang, L., Tao, Z., Feng, J., Li, S., Wang, X., Gao, L., Tang, W., & Fan, Q.
Affiliations
  • Nanjing University of Posts and Telecommunications (CN)
  • Nanjing University of Science and Technology (CN)
  • Xiamen University (CN)
Corresponding author
  • Tang, Weihua
  • Fan, Quli
Venue
Advanced Functional Materials
Publisher
Wiley
Published
2025-03-03
Volume
35
Issue
31
ISSN
  • 1616-301X (ISSN-L)
  • 1616-3028
OpenAlex
W4408089280
Cited by
15
References
70
Citations by year
2026: 9 · 2025: 6
FWCI
3.65
Type
journal article
Language
en
Open access
closed
Locations
Advanced Functional Materials (publishedVersion)
Funders
National Natural Science Foundation of China (22175098, U24A2077, 52373142)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Nanoplatforms for cancer theranostics
  • Physical Sciences › Materials Science › Materials Chemistry › Luminescence and Fluorescent Materials
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Photodynamic Therapy Research Studies
Keywords
phototheranostics, photodynamic therapy, photothermal therapy, type I photodynamic therapy, J-aggregation, nanoparticles, reactive oxygen species, hyperthermia, deep tissue imaging, cancer therapy

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