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Synthesis of covalently linked linear porphyrin triad and tetrad containing different porphyrin sub-units

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Title Synthesis of covalently linked linear porphyrin triad and tetrad containing different porphyrin sub-units
 
Creator PUNIDHA, S
RAVIKANTH, M
 
Subject porphyrin arrays
functionalized porphyrins
weak interactions
energy transfer
 
Description Covalently linked diarylethyne bridged unsymmetrical porphyrin triad containing ZnN4, N4, and N2S2 porphyrin sub-units and porphyrin tetrad containing ZnN4, N4, N3S, and N2S2 porphyrin sub-units were synthesized over sequence of Pd(0) mediated coupling reactions. The triad and tetrad are freely soluble in all common organic solvents and characterized by ES-MS, NMR, absorption, fluorescence, and electrochemical techniques. The 1H NMR, absorption, and electrochemical studies indicated a weak interaction between the porphyrin sub-units of porphyrin triad and porphyrin tetrad. The steady state and time-resolved fluorescence studies supported an energy transfer from one end of porphyrin array to the other end. This kind of porphyrin arrays containing different porphyrin sub-units will be useful for molecular electronics applications.
 
Publisher Elsevier
 
Date 2009-03-23T05:13:47Z
2011-11-25T20:12:27Z
2011-12-26T13:08:11Z
2011-12-27T05:56:11Z
2009-03-23T05:13:47Z
2011-11-25T20:12:27Z
2011-12-26T13:08:11Z
2011-12-27T05:56:11Z
2008
 
Type Article
 
Identifier Tetrahedron 64(34), 8016-8028
0040-4020
http://dx.doi.org/10.1016/j.tet.2008.05.020
http://hdl.handle.net/10054/1072
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1072
 
Language en