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. Author manuscript; available in PMC: 2016 Apr 2.
Published in final edited form as: J Phys Chem B. 2015 Mar 25;119(13):4637–4643. doi: 10.1021/acs.jpcb.5b00777

Figure 1.

Figure 1

General structure of Cy5 analogs. Modifications were incorporated as alkyl substitutions at the heterocyclic nitrogens (R1) and halogen incorporation on the meso position of the polymethine bridge (R2).