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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Emission spectra of the various phthalocyanine derivatives in THF at 20 °C (excitation at 606 nm): (a) ZnTOFPc1–4 and ZnPc used as reference; (b) H2TOFPc2 and H2TOFPc4.