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Updated: Jun 25, 2026
14:39
Measuring Phagosome pH by Ratiometric Fluorescence Microscopy
Published on: December 7, 2015
pH variation as the switch for chiral recognition in a biomembrane model.
Francesca Ceccacci1, Giovanna Mancini, Alessio Sferrazza
1Dipartimento di Chimica, Università degli Studi di Roma La Sapienza, P.le A. Moro 5, 00185 Roma, Italy.
Journal of the American Chemical Society
|October 6, 2005
Summary
Chiral recognition in a biomembrane model was achieved using N-dodecyl-l-proline micelles. These aggregates effectively converted racemic mixtures into enantiomerically enriched solutions, demonstrating significant chiral discrimination.
Area of Science:
- Supramolecular Chemistry
- Chiral Chemistry
- Biomimetic Systems
Background:
- Chiral recognition is crucial in biological systems.
- Developing artificial systems for chiral recognition remains a challenge.
- Biomembrane models offer a promising platform for studying chiral interactions.
Purpose of the Study:
- To investigate chiral recognition in a biomembrane model.
- To evaluate the deracemization capability of N-dodecyl-l-proline micellar aggregates.
- To explore the influence of pH on chiral recognition and enantiomeric enrichment.
Main Methods:
- Formation of micellar aggregates using N-dodecyl-l-proline.
- Conversion of a racemic biphenyl derivative mixture.
- Analysis of enantiomeric enrichment using High-Performance Liquid Chromatography (HPLC) on a chiral stationary phase.
- Investigation of pH-dependent effects on stereochemical bias.
Main Results:
- N-dodecyl-l-proline micelles successfully converted racemic mixtures into enantiomerically enriched solutions.
- The observed deracemization extent was among the highest reported for similar systems.
- Enantiomeric enrichment and configuration were pH-dependent and reversible.
- Maximum enantiomeric excess was observed at pH 7, with a configuration inversion at pH 13.
Conclusions:
- N-dodecyl-l-proline micellar aggregates serve as effective biomembrane models for chiral recognition.
- The system demonstrates tunable stereochemical bias through pH modulation.
- This study highlights the potential of biomimetic systems for enantioselective synthesis and separation.
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