Synthesis and properties of cyclophosphazenes appended with covalently linked porphyrin–ferrocene conjugates
作者： Yogita Pareek , Mangalampalli Ravikanth
DOI: 10.1016/J.JORGANCHEM.2012.10.043
关键词: Polymer chemistry 、 Chemistry 、 Covalent bond 、 Singlet state 、 Conjugate 、 Photochemistry 、 Ferrocene 、 Electrochemistry 、 Electron transfer 、 Porphyrin 、 Fluorescence
摘要: Abstract Cyclotriphosphazene and cyclotetraphosphazene appended with six eight covalently linked porphyrin–ferrocene conjugates respectively were synthesized by treating N 3 P Cl 6 4 8 appropriate equivalents of ferrocene porphyrin containing meso -hydroxyphenyl group in THF in the presence Cs 2 CO followed column chromatographic purification. NMR absorption studies indicated a weak interaction between adjacent conjugates. Electrochemical studies supported electrochemical equivalence ferrocenyl porphyrinyl moieties these multi-porphyrin–ferrocene conjugate assemblies. The fluorescence showed significant quenching due to photo-induced electron transfer from singlet state unit
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