Figure 4.

(a) Surface initiated atom transfer radical polymerization(ATRP) process establishing the grafting process b/w copolymer and chromophore groups. Adapted from work in [100] with permission from Elsevier. (b) Block copolymer brush generated using Reversible addition fragmentation chain transfer (RAFT) and successive grafting harvests the turn off fluorescence in response to 2,4,6-trinitrophenol (TNP) and exhibits thermoresponsive character. Reprinted from work in [101] with permission from Royal Society of Chemistry.