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Synthesis and properties of porphyrin-expanded porphyrin click dyads

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Title Synthesis and properties of porphyrin-expanded porphyrin click dyads
 
Creator PAREEK, Y
RAVIKANTH, M
 
Subject Expanded porphyrins
BF2-oxasmaragdyrin
Click reaction
Energy transfer
ENERGY-TRANSFER
CHEMISTRY
SAPPHYRINS
ASSEMBLIES
COMPLEXES
 
Description Six covalently linked 1,2,3-triazole bridged porphyrin-expanded porphyrin dyads containing Zn(II) porphyrin as energy donor and thiarubyrin, oxasmaragdyrin and BF2-oxasmaragdyrin as energy acceptors were synthesized under click reaction conditions. The click dyads were synthesized by coupling of azido Zn(II) porphyrin with ethynyl functionalized expanded porphyrins under Cu(I) catalyzed mild reaction conditions. Both rigid and flexible triazole bridges were used to understand the interaction between the Zn(II) porphyrin and expanded porphyrin units in dyads. The dyads were characterized by mass, NMR, absorption, fluorescence and electrochemical studies. The NMR, absorption and electrochemical studies indicated that the Zn(II) porphyrin and expanded porphyrin units in dyads interact weakly and maintain their independent characteristic features. The fluorescence studies indicated a possibility of energy transfer from donor Zn(II) porphyrin unit to expanded porphyrin unit such as oxasmaragdyrin and BF2-oxasmaragdyrin units in both flexible and rigid porphyrin-expanded porphyrin dyads. (C) 2013 Elsevier Ltd. All rights reserved.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2014-10-15T13:29:18Z
2014-10-15T13:29:18Z
2013
 
Type Article
 
Identifier TETRAHEDRON, 69(37)7943-7949
http://dx.doi.org/10.1016/j.tet.2013.07.013
http://dspace.library.iitb.ac.in/jspui/handle/100/15006
 
Language en