CsPbBr_(3)rhombic dodecahedra,octahedra,and nanocubes have been synthesized using typical reagents but by adjusting the amounts of organic capping molecules used and the reaction temperature.Although some Cs_(4)PbBr_(...CsPbBr_(3)rhombic dodecahedra,octahedra,and nanocubes have been synthesized using typical reagents but by adjusting the amounts of organic capping molecules used and the reaction temperature.Although some Cs_(4)PbBr_(6)has been identified,its presence was found not to affect optical property examination.With increasing sizes of CsPbBr_(3)rhombic dodecahedra from 59 to 168 nm,their band gaps decrease gradually.Remarkably,the much larger octahedra and{110}-bound rhombic dodecahedra show more blue-shifted absorption wavelengths than the{100}-bound nanocubes do,demonstrating the presence of optical facet effects.10 nm CsPbI_(3)nanocubes were also prepared and anion-exchanged to CsPbBr_(3)nanocubes.Similarly,CsPbBr_(3)rhombic dodecahedra were converted to rhombic dodecahedral CsPbI_(3).For both compositions,the much larger rhombic dodecahedra still display more blue-shifted absorption and emission bands than those of the nanocubes,indicating very large optical band shifts are possible by tuning the crystal morphology or exposed surfaces.展开更多
A 52-year-old male was admitted to the hospital as elevated alpha-fetoprotein(AFP)levels were detected during a routine physical examination,with the condition lasting for 2 months and no accompanying symptoms.The pat...A 52-year-old male was admitted to the hospital as elevated alpha-fetoprotein(AFP)levels were detected during a routine physical examination,with the condition lasting for 2 months and no accompanying symptoms.The patient had no history of hepatitis.Laboratory tests upon admission revealed an AFP level of 1,660.80 ng/mL,while beta-human chorionic gonadotropin(β-hCG)levels were found to be less than 0.6 mIU/mL.An abdominal computed tomography(CT)scan(Figure 1A-1C)revealed a soft tissue mass in the subumbilical extraperitoneal space,supplied by abdominal wall vessels.展开更多
文摘CsPbBr_(3)rhombic dodecahedra,octahedra,and nanocubes have been synthesized using typical reagents but by adjusting the amounts of organic capping molecules used and the reaction temperature.Although some Cs_(4)PbBr_(6)has been identified,its presence was found not to affect optical property examination.With increasing sizes of CsPbBr_(3)rhombic dodecahedra from 59 to 168 nm,their band gaps decrease gradually.Remarkably,the much larger octahedra and{110}-bound rhombic dodecahedra show more blue-shifted absorption wavelengths than the{100}-bound nanocubes do,demonstrating the presence of optical facet effects.10 nm CsPbI_(3)nanocubes were also prepared and anion-exchanged to CsPbBr_(3)nanocubes.Similarly,CsPbBr_(3)rhombic dodecahedra were converted to rhombic dodecahedral CsPbI_(3).For both compositions,the much larger rhombic dodecahedra still display more blue-shifted absorption and emission bands than those of the nanocubes,indicating very large optical band shifts are possible by tuning the crystal morphology or exposed surfaces.
基金supported by the Clinical Research Center for Medical Imaging in Jiangxi Province(No.20223BCG7400199).
文摘A 52-year-old male was admitted to the hospital as elevated alpha-fetoprotein(AFP)levels were detected during a routine physical examination,with the condition lasting for 2 months and no accompanying symptoms.The patient had no history of hepatitis.Laboratory tests upon admission revealed an AFP level of 1,660.80 ng/mL,while beta-human chorionic gonadotropin(β-hCG)levels were found to be less than 0.6 mIU/mL.An abdominal computed tomography(CT)scan(Figure 1A-1C)revealed a soft tissue mass in the subumbilical extraperitoneal space,supplied by abdominal wall vessels.
