Fig. -5d summarize the EDX data in the form of plausible models, each of which illustrates a side view of a cube. In the prototype, we find about five Cs atoms on average on four edges and a face (Fig. , see Supplementary Note 1). In 2 (Fig. ), one Br atom on each corner is replaced by one MLA, and all Cs atoms on the edges are replaced by OAMH + so that the large penalty of surface energy on the edges in toluene is reduced through lipophilization. By assuming charge neutrality of MLA•Cs•QD4 (2), we can consider that the QD was coated by 54 OAMH + , corresponding to a density of 1.5 OAMH + nm -2 , in good agreement with the density (1.2-1.5 OAMH + nm -2 ) previously reported . In 1 (Fig. ), three Br atoms on each corner are replaced by one MLA.