Iodination of Gas-Phase-Generated Ag Nanoparticles: Behavior of the Two Spin Orbit Components of the AgI Exciton in Ag@AgI Core−Shell Nanoparticles

摘要: Ag nanoparticles, with diameters estimated to be 17 ± 6 nm, were observed react readily I2 produce Ag@AgI core−shell nanoparticles. Both spin−orbit components of the exciton associated AgI shell in UV−vis spectra. The band gap was found shift lower energy as reaction proceeded and thickness increased. Shell can varied by controlling duration exposure nanoparticles iodine. for comparable that expected a solid nanoparticle diameter 5−6 using Brus formula. difference between this effective actual particle (17 nm) may attributable confinement effects finite and/or core on shell. shorter wavelength appeared much more sensitive surface effects, which are pronounced...