title: M2+Doping Induced Simultaneous Phase/Size Control and Remarkable Enhanced Upconversion Luminescence of NaLnF4Probes for Optical-Guided Tiny Tumor Diagnosis.
abstract: Doping has played a vital role in constructing desirable hybrid materials with tunable functions and properties via incorporating atoms into host matrix. Herein, a simple strategy for simultaneously modifying the phase, size, and upconversion luminescence (UCL) properties of the NaLnF4(Ln = Y, Yb) nanocrystals by high-temperature coprecipitation through nonequivalent M2+doping (M = Mg2+, Co2+) has been demonstrated. The phase transformation from cubic to hexagonal is readily achieved by doping M2+. Compared with Mg-free sample, a remarkable enhancement of overall UCL (≈27.5 times) is obtained by doping Mg2+. Interestingly, owing to the efficient UCL, red UCL-guided tiny tumor (down to 3 mm) diagnosis is demonstrated for the first time. The results open up a new way of designing high efficient UCL probe with combination of hexagonal phase and small size for tiny tumor detection.
authors.affiliation: College of Physics and Information Science, Synergetic Innovation Center for Quantum Effects and Applications, and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of the Ministry of Education, Hunan Normal University, Changsha, 410081, China.
authors.forename: Youbin
authors.initials: Y
authors.lastname: Li
authors.affiliation: College of Physics and Information Science, Synergetic Innovation Center for Quantum Effects and Applications, and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of the Ministry of Education, Hunan Normal University, Changsha, 410081, China.
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Li
authors.affiliation: College of Physics and Information Science, Synergetic Innovation Center for Quantum Effects and Applications, and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of the Ministry of Education, Hunan Normal University, Changsha, 410081, China.
authors.forename: Zhenluan
authors.initials: Z
authors.lastname: Xue
authors.affiliation: College of Physics and Information Science, Synergetic Innovation Center for Quantum Effects and Applications, and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of the Ministry of Education, Hunan Normal University, Changsha, 410081, China.
authors.forename: Mingyang
authors.initials: M
authors.lastname: Jiang
authors.affiliation: College of Physics and Information Science, Synergetic Innovation Center for Quantum Effects and Applications, and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of the Ministry of Education, Hunan Normal University, Changsha, 410081, China.
authors.forename: Songjun
authors.initials: S
authors.lastname: Zeng
authors.affiliation: Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong.
authors.forename: Jianhua
authors.initials: J
authors.lastname: Hao
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D049449:Luminescence; D008163:Luminescent Measurements / Q000379:methods*; D008274:Magnesium / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry
chemical_list: D003035:Cobalt; D008274:Magnesium
keywords: M2+ doping; cubic to hexagonal phase transformation; optical-guided tiny tumor diagnosis; phase/size control