Journal
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
Volume 58, Issue 1, Pages 1-14Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jccs.201190067
Keywords
Heteroporphyrins; Functionalization; Unsymmetrical dyads; Energy transfer
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Funding
- BRNS
- DST
- CSIR
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Heteroporphyrins resulted from the replacement of one or two pyrrolic nitrogens with other hetero atoms such as O, S, Se and Te possess very interesting and distinct properties compared to tetrapyrrolic porphyrins. Specially, the singlet state energy levels can be fine tuned with suitable modification of porphyrin core by substituting pyiTolic N with other hetero atoms such as O and S. In this review, we describe our synthetic approaches for the synthesis of various mono-functionalized heteroporphyrin building blocks and their use in the synthesis of several covalently and non-covalently linked unsymmetrical porphyrin dyads containing two different porphyrin sub-units. The photophysical studies are also described to show the possibility of singlet-singlet energy transfer from one porphyrin sub-unit to another in these unsymmetrical porphyrin dyads.
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