| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Zebrafish imaging and two-photon fluorescence imaging using ZnSe quantum dots |
| Nan-Nan Zhang(张楠楠)1, Li-Ya Zhou(周立亚)2,†, Xiao Liu(刘潇)1, Zhong-Chao Wei(韦中超)1, Hai-Ying Liu(刘海英)1, Sheng Lan(兰胜)1, Zhao Meng(孟钊)3, and Hai-Hua Fan(范海华)1,‡ |
| 1 Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China; 2 School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; 3 Guangdong Women and Children Hospital, Guangzhou 510000, China |
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Abstract This study is to report a ZnSe quantum dot with a large two-photon absorption cross section and good biocompatibility, which can be used in bioimaging. Fluorescence emission at 410 nm is observed in the quantum dot under 760-nm laser excitation. These biocompatible quantum dots exhibit a two-photon cross-section of 9.1× 105 GM (1 GM=10-50 cm4s/photon). Two-photon excited laser scanning microscopic images show that cells co-cultured with ZnSe quantum dots are found in the blue channel at a fluorescence intensity that is 14.5 times that of control cells not co-cultured with quantum dots. After incubating zebrafish larvae with ZnSe quantum dots for 24 h, the fluorescence intensity of the yolk sac stimulated by ultraviolet light is 2.9 times that of the control group. The proposed material shows a great potential application in biological imaging.
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Received: 27 September 2020
Revised: 11 December 2020
Accepted manuscript online: 17 December 2020
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61774062 and U20A20206), the Science and Techology Program of Guangzhou City, China (Grant No. 2019050001), and the Natural Science Foundation of Guangdong Province, China (Grant Nos. 2018A030313854 and 2016A030308010). |
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Corresponding Authors:
†Corresponding author. E-mail: zhouliyatf@163.com ‡Corresponding author. E-mail: fanhh@scnu.edu.cn
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Cite this article:
Nan-Nan Zhang(张楠楠), Li-Ya Zhou(周立亚), Xiao Liu(刘潇), Zhong-Chao Wei(韦中超), Hai-Ying Liu(刘海英), Sheng Lan(兰胜), Zhao Meng(孟钊), and Hai-Hua Fan(范海华) Zebrafish imaging and two-photon fluorescence imaging using ZnSe quantum dots 2021 Chin. Phys. B 30 044204
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