Synthesis and Studies of Covalently Linked Porphyrin-Expanded Heteroporphyrin Dyads
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Title |
Synthesis and Studies of Covalently Linked Porphyrin-Expanded Heteroporphyrin Dyads
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Creator |
RAO, MR
RAVIKANTH, M |
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Subject |
MODIFIED 22-PI SMARAGDYRINS
CORE-MODIFIED HEXAPHYRINS MESO-ARYL SUBSTITUENTS ANION-BINDING AGENTS ONE-POT SYNTHESIS STRUCTURAL-CHARACTERIZATION GADOLINIUM(III) TEXAPHYRIN ELECTROCHEMICAL PROPERTIES BUILDING-BLOCKS ENERGY-TRANSFER Porphyrinoids Anions Sensors Energy transfer Fluorescence |
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Description |
Mono-functionalized core-modified sapphyrin (with a N(2)S(3) core) and smaragdyrin (with a N(4)O core) containing a meso-iodophenyl functional group were synthesized by following a [3+2] condensation approach using appropriate precursors. The mono-functionalized sapphyrin and smaragdyrin building blocks were used to synthesize the first examples of diphenyl ethyne bridged porphyrin-sapphyrin and porphyrin/Zn(II)porphyrin-smaragdyrin dyads under mild Pd(0)-coupling conditions. The dyads are freely soluble in common organic solvents and were characterized by various spectroscopic techniques. Photophysical studies indicated the possibility of energy transfer from the porphyrin/Zn(II) porphyrin sub-unit to the smaragdyrin sub-unit in porphyrin/ Zn(II)porphyrin-smaragdyrin dyads. The potential of these dyads as fluorescent sensors for anions was explored. The studies indicated that the porphyrin-sapphyrin dyad cannot be used as fluorescent sensors, whereas the porphyrin-smaragdyrin dyad was suitable.
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Publisher |
WILEY-BLACKWELL
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Date |
2012-06-26T04:49:28Z
2012-06-26T04:49:28Z 2011 |
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Type |
Article
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Identifier |
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY,(7)1335-1345
1434-193X http://dx.doi.org/10.1002/ejoc.201001482 http://dspace.library.iitb.ac.in/jspui/handle/100/13904 |
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Language |
English
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