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. Author manuscript; available in PMC: 2014 Oct 9.
Published in final edited form as: J Am Chem Soc. 2013 Sep 24;135(40):15018–15025. doi: 10.1021/ja403906d

Figure 2.

Figure 2

Four reaction mechanisms for the n-doping reaction of PC61BM with DMBI derivatives. In each case the hydrogen reduced side product PCBHx will be a radical, as indicated, if x is odd, but a closed-shell species, when x is even.