Poly pump functioning

Figure 7 Proton NMR signal enhancement as a function of the electronic pumping frequency for trans-rich (solid circle), and cw-rich (solid square) poly acetylene samples.

We have also observed that, at elevated temperature (50°C), DPE could effectively cap the living anionic polyferrocenylsilane directly.30 Therefore, the addition of DMSB to pump up the activity of PFS anionic chain ends can potentially be omitted, but the yield of the isolated PFS- -PMMA is significantly reduced.31 The living DPE-capped PFS polymers also can react with chloromethyl functionalities of poly(styrene-co-chloromethylstyrene) (PS-co-PCMS), leading to the first PS-g-PFS graft copolymers (see Scheme 3.10).30... 

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