Skip to main content
. 2014 Apr 11;5:3587. doi: 10.1038/ncomms4587

Figure 2. s-SNOM image of nanoscale chemical morphology of block copolymer.

Figure 2

(a) Nanoscale chemical map of self-phase separated amphiphilic block copolymer PS-b-PMMA derived from carbonyl resonant s-SNOM imaging. Scale bar 750 nm. The radial distribution function g(r) is obtained from the large area scan (top right inset). A high spatial resolution (scale bar 100 nm) s-SNOM image showing additional features and continuous variation in relative PMMA:PS density across the interface is overlaid. (b) Molecular structure of (PS-b-PMMA), highlighting the carbonyl marker resonance. (c) Schematic of domain morphology of PS-b-PMMA with incomplete segregation near the interface.