1. Aggregates of a cationic porphyrin as supramolecular probes for biopolymers.
- Author
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Occhiuto IG, Samperi M, Trapani M, De Luca G, Romeo A, Pasternack RF, and Scolaro LM
- Subjects
- Coordination Complexes chemistry, Coordination Complexes pharmacology, Isomerism, Sodium Chloride chemistry, Spores, Bacterial drug effects, Static Electricity, Coordination Complexes chemical synthesis, Copper chemistry, Porphyrins chemistry
- Abstract
The copper(II) derivative of the dicationic trans-bis(N-methylpyridinium-4-yl)diphenylporphyrin (t-CuPagg) forms large fractal aggregates in aqueous solution under moderate ionic strength conditions. A kinetic investigation of the aggregation process allows for a choice of experimental conditions to quickly obtain stable assemblies in solution. These positively charged aggregates are able to interact efficiently with negatively charged chiral species, (including bacterial spores) leading to induced circular dichroism signals in the Soret region of the porphyrin, now acting as a sensitive chiroptical probe.
- Published
- 2015
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