Starting materials: Solid CsBr, BiBr, 9-M HBr, Solid AgBr
Product: orange powder
Description: First, solid CsBr (0.426 g, 2.00 mmol) and BiBr (0.449 g, 1.00 mmol) were dissolved in 10 mL of 9-M HBr. Afterward, solid AgBr (0.188 g, 1.00 mmol) was added to the mixture. The vial was then capped, heated to 110º C for 2 hours, and cooled to room temperature. As a result, an orange-powder precipitate formed and was filtered on a glass frit and dried under low pressure overnight.
Method: Photoluminescence
Description: Room-temperature steady-state emission spectra were collected on powders mounted on quartz slides using a Horiba Jobin-Yvon Spex Fluorolog-3 fluorimeter equipped with a 450-W xenon lamp and a thermoelectrically-cooled R928P detector.
Starting materials: Solid CsBr, BiBr, 9-M HBr, Solid AgBr
Product: orange powder
Description: First, solid CsBr (0.426 g, 2.00 mmol) and BiBr (0.449 g, 1.00 mmol) were dissolved in 10 mL of 9-M HBr. Afterward, solid AgBr (0.188 g, 1.00 mmol) was added to the mixture. The vial was then capped, heated to 110º C for 2 hours, and cooled to room temperature. As a result, an orange-powder precipitate formed and was filtered on a glass frit and dried under low pressure overnight.
Method: Photoluminescence
Description: Low-temperature photoluminescence was measured using a spectrograph (Acton Research SpectraPro 500i) equipped with a silicon CCD array detector (Hamamatsu). Samples were cooled to liquid helium temperatures using a Janus ST-500 cold-finger cryostat.