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. Author manuscript; available in PMC: 2019 Nov 1.
Published in final edited form as: Photochem Photobiol. 2018 Aug 20;94(6):1175–1209. doi: 10.1111/php.12967

Figure 32.

Figure 32.

Structures of the NIR absorbing free-base porphyrin derivatives 58 – 65 reported by Li et al. using the tetracyanoethene(TCNE), 7,7,8,8-tetracyanoquiodimethane (TCNQ) and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquiodimethane (F4-TCNQ) electron-withdrawing click-reagents (184).