Binaphthyl-based fluorescent amphiphiles for analytical systems based on energy transfer

✍ Scribed by Bernard Juskowiak; Walenty Szczepaniak

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 791 KB
• Volume: 290
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(94)80046-4

✦ Synopsis

New binaphthyl-based amphiphiles with malonate, dioxocyclam and polyethylene glycol head groups were synthesized and characterized . Vesicles and lamella-type aggregates were observed in aqueous dispersions . The aggregation behaviour and spectral characteristics are discussed in terms of the structure and charge of the head groups of the amphiphiles . A concept of analytical exploitation of fluorescent amphiphiles is presented, where the "sensing pseudo-phase" consists of acceptor molecules incorporated in donor amphiphile aggregates . Perylene (Per), perylene tetracarboxylate (PTC), Auramine 0 (AuO) and the heavy metal cation Cue + were tested as acceptors or quenchers. The very efficient quenching (AuO, Cue') and energy transfer accompanied by sensitized fluorescence of acceptors (Per, PTC) suggest a great potential of binaphthyl amphiphiles for the development of analytical systems for a variety of analytes not conventionally associated with fluorescent measurements.