نتایج جستجو برای: tetraphenylporphyrin
تعداد نتایج: 318 فیلتر نتایج به سال:
The relative reactivity of building blocks is critical for a successful preparation of combinatorial libraries. Here, we present a method for measuring the reactivity of carboxylic acid building blocks in amide-forming reactions. The method involves competitive reactions between a reference and test acid and a tetraphenylporphyrin reaction partner with four reactive sites. Relative reactivities...
Analysis by reflection spectrometry was performed to clarify the interfacial adsorption of protonated lipophilic tetraphenylporphyrin derivatives in a dodecane-aqueous sulfuric acid system, and to confirm the utility of partial reflection spectroscopy. Interfacial adsorption was not observed for porphyrins substituted at the 2,6 positions of meso-phenyl groups, suggesting that the substituents ...
The present work is concerned with the manganese complexes of 5,10,15,20-tetraphenylporphyrin and of 5,10,15,20-tetra(3-hydroxyphenyl)porphyrin, which were prepared by metallation of the corresponding porphyrin ligands, and the study of their spectroscopic and photophysical behavior under strongly acidic and alkaline conditions. The second objective was to obtain and study some new hybrid mater...
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