Simultaneous Morphologies and Luminescence Control of NaYF4:Yb/Er Nanophosphors by Surfactants for Cancer Cell Imaging

• Published in: 东华大学学报（英文版） Vol. 40; no. 2; pp. 127 - 133
• Main Authors: SHENG Yangyi, CHENG Lu, SONG Yuelin, WANG Zhaojie, JIANG Weizhong, CHEN Zhigang
• Format: Journal Article
• Language: English
• Published: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China 01.04.2023
• Subjects: adjustable morphology; luminescence; cancer cell imaging; NaYF4; nanophosphor; surfactant
• ISSN: 1672-5220
• DOI: 10.19884/j.1672-5220.202210002

TB34; Hydrophilic rare-earth up-conversion nanophosphors(UCNPs)with small sizes and a strong up-conversion luminescence have attracted much interest.Herein the simultaneous control of morphologies and the up-conversion luminescence intensities was reported for NaYF4 ∶Yb/Er nanophosphors by a facile hydrothermal procedure with different surfactants.With the change of the surfactants from polyvinylpyrrolidone(PVP)to sodium citrate(CIT),edetate disodium(EDTA)or sodium dodecyl benzenesulfonate(SDBS),the morphology of NaYF4 ∶Yb/Er nanophosphors transformed from nanoparticles with a diameter of about 70.0 nm to hexagonal nanoblocks with a thickness of about 125.0 nm and a length of about 240.0 nm,nanorods with a diameter of about 700.0 nm and a length of about 2.6 μm,or nanowires with a diameter of 250.0 nm and a length of about 3.2 μm.Simultaneously,their up-conversion luminescence intensity went down gradually under laser irradiation at a wavelength of 980 nm due to the increase of photobleaching.PVP-capped NaYF4 ∶Yb/Er nanoparticles exhibited the smallest size and the strongest up-conversion luminescence intensity.Biological experiment results revealed that NaYF4 ∶Yb/Er nanophosphors exhibited a high biocompatibility and could be used as biological labels with a perfect signal-to-noise ratio for cancer cell imaging.