title: Facile synthesis and potential bioimaging applications of hybrid upconverting and plasmonic NaGdF4: Yb3+, Er3+/silica/gold nanoparticles.
abstract: We present a simple method for preparing water dispersible NaGdF4: Yb3+, Er3+/silica/gold nanoparticles. The emission intensity and color of the upconverting cores are modulated by the plasmonic absorbance and field enhancement from the gold nanoparticles. The applicability of hybrid NPs for multi-modal bioimaging probes is illustrated by in vitro confocal microscopy of living cancer cells.
authors.affiliation: Institute for Lasers, Photonics and Biophotonics, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States.
authors.forename: Sha
authors.initials: S
authors.lastname: Liu
authors.forename: Guanying
authors.initials: G
authors.lastname: Chen
authors.forename: Tymish Y
authors.initials: TY
authors.lastname: Ohulchanskyy
authors.forename: Mark T
authors.initials: MT
authors.lastname: Swihart
authors.forename: Paras N
authors.initials: PN
authors.lastname: Prasad
mesh_terms: D004871:Erbium / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D006367:HeLa Cells; D006801:Humans; D049449:Luminescence; D018613:Microscopy, Confocal; D053758:Nanoparticles / Q000737:chemistry*; D061848:Optical Imaging; D012822:Silicon Dioxide / Q000737:chemistry; D020349:Surface Plasmon Resonance; D015018:Ytterbium / Q000737:chemistry
chemical_list: D006046:Gold; D012822:Silicon Dioxide; D004871:Erbium; D015018:Ytterbium
keywords: Bioimaging.; Gold; Nanoparticles; Photoluminescence; Upconversion