Volume 61, Issue 45 e202210370
Research Article

Enantiomeric NIR-II Emitting Rare-Earth-Doped Ag2Se Nanoparticles with Differentiated In Vivo Imaging Efficiencies

Qi Ding

Qi Ding

Key Laboratory of Synthetic and Biological Colloids, Jiangnan University, Wuxi, Jiangsu, 214122 P.R. China

International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122 P.R. China

Contribution: Data curation (equal), Formal analysis (equal), ​Investigation (equal), Methodology (equal), Resources (equal), Software (equal), Writing - original draft (equal)

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Dr. Jing Zhao

Dr. Jing Zhao

Department of Radiology, Jiangnan University, No. 1000, Hefeng Road, Wuxi, Jiangsu, 214122 China

Contribution: Funding acquisition (equal), ​Investigation (equal), Methodology (equal), Resources (equal), Software (equal), Visualization (equal)

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Dr. Hongyu Zhang

Dr. Hongyu Zhang

International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122 P.R. China

Contribution: Conceptualization (equal), Data curation (equal), Funding acquisition (equal), ​Investigation (equal), Methodology (equal), Project administration (equal), Resources (equal)

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Chen Li

Chen Li

International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122 P.R. China

Contribution: Resources (equal), Software (equal), Validation (equal), Visualization (equal), Writing - original draft (equal), Writing - review & editing (equal)

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Prof. Maozhong Sun

Prof. Maozhong Sun

International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122 P.R. China

Contribution: Conceptualization (equal), ​Investigation (equal), Writing - original draft (equal), Writing - review & editing (equal)

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Chen Chen

Chen Chen

International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122 P.R. China

Contribution: Methodology (equal), Project administration (equal), Resources (equal), Software (equal)

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Prof. Hengwei Lin

Corresponding Author

Prof. Hengwei Lin

Key Laboratory of Synthetic and Biological Colloids, Jiangnan University, Wuxi, Jiangsu, 214122 P.R. China

Contribution: Conceptualization (equal), Funding acquisition (equal), Methodology (equal), Project administration (equal), Resources (equal), Writing - review & editing (equal)

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Prof. Chuanlai Xu

Corresponding Author

Prof. Chuanlai Xu

International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122 P.R. China

Contribution: Conceptualization (equal), Validation (equal), Visualization (equal), Writing - original draft (equal), Writing - review & editing (equal)

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Prof. Hua Kuang

Prof. Hua Kuang

Key Laboratory of Synthetic and Biological Colloids, Jiangnan University, Wuxi, Jiangsu, 214122 P.R. China

International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122 P.R. China

Contribution: Conceptualization (equal), Supervision (equal), Writing - review & editing (equal)

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Prof. Liguang Xu

Corresponding Author

Prof. Liguang Xu

Key Laboratory of Synthetic and Biological Colloids, Jiangnan University, Wuxi, Jiangsu, 214122 P.R. China

International Joint Research Laboratory for Biointerface and Biodetection, State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122 P.R. China

Contribution: Conceptualization (equal), Data curation (equal), Funding acquisition (equal), Supervision (equal), Validation (equal), Visualization (equal), Writing - original draft (equal), Writing - review & editing (equal)

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First published: 19 September 2022
Citations: 24

Graphical Abstract

Chiral Ag2Se:Nd/Yd/Er NPs by introducing RuCl[(p-cymene(BINAP)]Cl as ligands were synthesized. Nd3+, Yb3+ and Er3+ as sensitizers case a fluorescence red-shift to 1550 nm with an intensity increased by 145.7-fold compared with Ag2Se:Nd/Yd/Er NPs. The fluorescence imaging efficiency of R-Ag2Se:Nd/Yd/Er NPs was 2-fold higher than that of S-Ag2Se:Nd/Yd/Er NPs.

Abstract

Here, chiral second near-infrared (NIR-II) emitting rare-earth doped silver selenide nanoparticles (R- or S-Ag2Se:Nd/Yd/Er NPs) were fabricated, exhibiting circular dichroism peak at 850 nm and fluorescence peak at 1550 nm, with 145.7-fold enhanced intensity compared to the reported Ag2Se NPs. Compared with S-Ag2Se:Nd/Yd/Er NPs, imaging efficiency of R-Ag2Se:Nd/Yd/Er NPs in living cells was significantly improved due to a higher cellular uptake rate and 927.7-fold higher affinity. Furthermore, R-Ag2Se:Nd/Yd/Er NPs reached at the tumor 2-fold faster than S type of NPs in vivo. We discover that chirality leads to differences in the affinity between chiral Ag2Se:Nd/Yd/Er NPs and cluster of differentiation 44 (CD44) onto the surface of murine mammary carcinoma cell to cause different in vivo imaging efficiency. These results reveal that chiral Ag2Se:Nd/Yd/Er NPs have high photoluminescence intensity and high in vivo imaging efficiency reflecting wide applications in biomedical diagnosis.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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