The Willets Lab visits Freire Charter School in Philadelphia
Activity: the students prepared silver nanoprisms following the procedure from Kitaev and coworkers (J. Chem. Ed. 87 (2010) 1098-1101).
Students started by preparing the same solution, in which no potassium bromide was added the solution, and everyone successfully made blue nanoprisms. Then we allowed the students to pick varying amounts of potassium bromide to be added, yielding solutions of varying colors!! We finished with a discussion of the relationship between size and properties on the nanoscale (here, nanoprism size and color) as well as discussion of chemical synthesis.