Zebrafish imaging and two-photon fluorescence imaging using ZnSe quantum dots

• 作者: Nan-Nan Zhang Li-Ya Zhou Xiao Liu Zhong-Chao Wei Hai-Ying Liu Sheng Lan Zhao Meng Hai-Hua Fan
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（4）
• 所属期刊栏目: ELECTROMAGNETISM,OPTICS,ACOUSTICS,HEAT TRANSFER,CLASSICAL MECHANICS,AND FLUID DYNAMICS
• 页码范围: 279-284
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/abd467

摘要

This study is to report a ZnSe quantum dot with a large two-photon absorption cross section and good biocom-patibility,which can be used in bioimaging.Fluorescence emission at 410 nm is observed in the quantum dot un-der 760-nm laser excitation.These biocompatible quantum dots exhibit a two-photon cross-section of 9.1x105 GM(1 GM = 10-50 cm4·s/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.