Fig. 2.
Effect of MW of outer PMAMC chains on the in situ formation of Au NPs. TEM images of Au NPs formed in situ using (A) sample B, (B) sample A, and (C) sample C in SI Appendix, Table S2 as nanoreactors, respectively, in the mixed solvents of DMF and BA at the volume ratio of DMF/BA of 7/3. (D) Proposed mechanism for synthesis of uniform Au NPs (using sample A as nanoreactor where PMAMC has an intermediate MW, Mn; central panels) and nonuniform Au NPs (using sample B in Upper and sample C in Lower as nanoreactors, where Mn of PMAMC are relatively too small and too large, respectively) in the 7/3 DMF/BA mixed solvents.