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In a typical synthesis of CsPbBr 3 , octadecene (15 mL, ODE), OA (1.5 mL), OAm (1.5 mL), and PbBr 2 (0.2 g) were mixed and degased under argon
for 1 h. To obtain cubic structure, the reaction temperature was raised up to 180 ¡ãC and the system was kept at this temperature for more
20 min. After that, 1 mL of the Cs-precursor was swiftly injected into above system and the reaction was stopped immediately with ice bath.
The IPQDs were washed with acetone and toluene via precipitation and redispersed in toluene finally.
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