Traces of biological contaminants that cannot be detected, but are expected to be present, in ultra-pure water suffice to select the emerging chiral sign in the spontaneous mirror symmetry breaking that takes place during the formation of the J-aggregates of the amphiphilic diprotonated tetrakis-(4-sulfonatophenyl)porphyrin (H4TPPS42-). This is demonstrated by competition experiments with a chiral cationic surfactant. The sensitivity of the detection depends on the hierarchical control of the H4TPPS42- self-aggregation. Chirality 21:408-412, 2009. (C) 2008 Wiley-Liss, Inc.

Chiral Sign Selection on the J-Aggregates of Diprotonated Tetrakis-(4-sulfonatophenyl)porphyrin by Traces of Unidentified Chiral Contaminants Present in the Ultra-Pure Water Used as Solvent

PURRELLO, Roberto;D'URSO, ALESSANDRO;
2009

Abstract

Traces of biological contaminants that cannot be detected, but are expected to be present, in ultra-pure water suffice to select the emerging chiral sign in the spontaneous mirror symmetry breaking that takes place during the formation of the J-aggregates of the amphiphilic diprotonated tetrakis-(4-sulfonatophenyl)porphyrin (H4TPPS42-). This is demonstrated by competition experiments with a chiral cationic surfactant. The sensitivity of the detection depends on the hierarchical control of the H4TPPS42- self-aggregation. Chirality 21:408-412, 2009. (C) 2008 Wiley-Liss, Inc.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11769/240724
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